sys4/mysql
1
0
Fork 0
mirror of https://github.com/luapower/mysql.git synced 2024-12-27 11:20:31 +01:00
Code Issues Releases Wiki Activity

init

Browse Source
This commit is contained in:
cosmin.apreutesei 2013-12-19 00:31:53 +02:00
commit cf30f83abe
5 changed files with 3005 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1243
mysql.lua Normal file
View File

File diff suppressed because it is too large Load Diff

508
mysql.md Normal file
View File

@ -0,0 +1,508 @@
---
project: mysql
tagline: mysql ffi binding
---
v1.1.1 | mysql Connector/C 6.1 | LuaJIT 2
## `local mysql = require'mysql'`
A complete, lightweight ffi binding of the mysql client library.
## Summary
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
**[Connections]**
`mysql.connect(host, [user], [pass], [db], [charset], [port]) -> conn` connect to a mysql server
`mysql.connect(options_t) -> conn` connect to a mysql server
`conn:close()` close the connection
**[Queries]**
`conn:query(s)` execute a query
`conn:escape(s) -> s` escape an SQL string
**[Fetching results]**
`conn:store_result() -> result` get a cursor for buffered read ([manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-store-result.html))
`conn:use_result() -> result` get a cursor for unbuffered read ([manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-use-result.html))
`result:fetch([mode[, row_t]]) -> true, v1, v2, ... | row_t | nil` fetch the next row from the result
`result:rows([mode[, row_t]]) -> iterator() -> row_num, val1, val2, ...` row iterator
`result:rows([mode[, row_t]]) -> iterator() -> row_num, row_t` row iterator
`result:free()` free the cursor
`result:row_count() -> n` number of rows
`result:eof() -> true | false` check if no more rows
`result:seek(row_number)` seek to row number
**[Query info]**
`conn:field_count() -> n` number of result fields in the executed query
`conn:affected_rows() -> n` number of affected rows in the executed query
`conn:insert_id() -> n` the id of the autoincrement column in the executed query
`conn:errno() -> n` mysql error code (0 if no error) from the executed query
`conn:sqlstate() -> s`
`conn:warning_count() -> n` number of errors, warnings, and notes from executed query
`conn:info() -> s`
**[Field info]**
`result:field_count() -> n` number of fields in the result
`result:field_name(field_number) -> s` field name given field index
`result:field_type(field_number) -> type, length, unsigned, decimals` field type given field index
`result:field_info(field_number) -> info_t` field info table
`result:fields() -> iterator() -> i, info_t` field info iterator
**[Result bookmarks]**
`result:tell() -> bookmark` bookmark the current row for later seek
`result:seek(bookmark)` seek to a row bookmark
**[Multiple statement queries]**
`conn:next_result() -> true | false` skip to the next result set ([manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-next-result.html))
`conn:more_results() -> true | false` are there more result sets?
**[Prepared statements]**
`conn:prepare(query) -> stmt` prepare a query for multiple executions
`stmt:exec()` execute a prepared statement
`stmt:store_result()` store all the resulted rows to the client
`stmt:fetch() -> true | false | true, 'truncated'` fetch the next row
`stmt:free_result()` free the current result buffers
`stmt:close()` close the statement
`stmt:next_result()` skip to the next result set
`stmt:row_count() -> n` number of rows in the result, if the result was stored
`stmt:affected_rows() -> n` number of affected rows after execution
`stmt:insert_id() -> n` the id of the autoincrement column after execution
`stmt:field_count() -> n` number of fields in the result after execution
`stmt:errno() -> n` mysql error code, if any, from the executed statement
`stmt:sqlstate() -> s`
`stmt:result_metadata() -> result` get a result for accessing the field info
`stmt:fields() -> iterator() -> i, info_t` iterate the result fields info
`stmt:reset()` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-reset.html)
`stmt:seek(row_number)` seek to row number
`stmt:tell() -> bookmark` get a bookmark in the current result
`stmt:seek(bookmark)` seek to a row bookmark in the current result
**[Prepared statements I/O]**
`stmt:bind_params(type1, ... | types_t) -> params` bind query parameters based on type definitions
`params:set(i, number | int64_t | uint64_t | true | false)` set an integer, float or bit param
`params:set(i, s[, size])` set a variable sized param
`params:set(i, cdata, size)` set a variable sized param
`params:set(i, {year=, month=, ...})` set a time/date param
`params:set_date(i, [year], [month], [day], [hour], [min], [sec], [frac])` set a time/date param
`stmt:write(param_number, data[, size])` send a long param in chunks
`stmt:bind_result([type1, ... | types_t | maxsize]) -> fields` bind query result fields based on type definitions
`fields:get(i) -> value` get the current row value of a field
`fields:get_datetime(i) -> year, month, day, hour, min, sec, frac` get the value of a date/time field directly
`fields:is_null(i) -> true | false` is field null?
`fields:is_truncated(i) -> true | false` was field value truncated?
**[Prepared statements settings]**
`stmt:update_max_length() -> true | false` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
`stmt:set_update_max_length(true | false)` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
`stmt:cursor_type() -> mysql.C.MYSQL_CURSOR_TYPE_*` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
`stmt:set_cursor_type('CURSOR_TYPE_...')` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
`stmt:set_cursor_type(mysql.C.MYSQL_CURSOR_TYPE_...)` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
`stmt:prefetch_rows() -> n` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
`stmt:set_prefetch_rows(stmt, n)` see [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html)
**[Connection info]**
`conn:set_charset(charset)` change the current charset
`conn:select_db(dbname)` change the current database
`conn:change_user(user, [pass], [db])` change the current user (and database)
`conn:set_multiple_statements(true | false)` enable/disable support for multiple statements
`conn:charset() -> s` get current charset's name
`conn:charset_info() -> info_t` get info about the current charset
`conn:ping() -> true | false` check if the connection is still alive
`conn:thread_id() -> id`
`conn:stat() -> s`
`conn:server_info() -> s`
`conn:host_info() -> s`
`conn:server_version() -> n`
`conn:proto_info() -> n`
`conn:ssl_cipher() -> s`
**[Transactions]**
`conn:commit()` commit the current transaction
`conn:rollback()` rollback the current transaction
`conn:set_autocommit([true | false])` enable/disable autocommit on the current connection
**[Reflection]**
`conn:list_dbs([wildcard]) -> result` return info about databases as a result object
`conn:list_tables([wildcard]) -> result` return info about tables as a result object
`conn:list_processes() -> result` return info about processes as a result object
**[Remote control]**
`conn:kill(pid)` kill a connection based on process id
`conn:shutdown([level])` shutdown the server
`conn:refresh(options)` flush tables or caches
`conn:dump_debug_info()` dump debug info in the log file
**[Client library info]**
`mysql.thread_safe() -> true | false` was the client library compiled as thread-safe?
`mysql.client_info() -> s`
`mysql.client_version() -> n`
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
## Features:
* covers all of the functionality provided by the mysql C API
* all data types are supported with options for conversion
* prepared statements, avoiding dynamic allocations and format conversions when fetching rows
* all C calls are checked for errors and Lua errors are raised
* all C objects are tied to Lua's garbage collector
* lightweight OOP-style API using only `ffi.metatype`
* no external dependencies
## Example:
~~~{.lua}
function print_help(search)
local mysql = require'mysql'
local conn = mysql.connect('localhost', 'root', nil, 'mysql', 'utf8')
conn:query("select name, description, example from help_topic where name like '" .. conn:escape(search) .. "'")
local result = conn:store_result()
print('Found:')
for i,name in result:rows() do
print(' ' .. name)
end
print()
for i, name, description, example in result:rows() do
print(name)
print'-------------------------------------------'
print(description)
print'Example:'
print'-------------------------------------------'
print(example)
print()
end
result:free()
conn:close()
end
print_help'CONCAT%'
~~~
# Connections
## `mysql.connect(host, [user], [pass], [db], [charset], [port]) -> conn`
## `mysql.connect(options_t) -> conn`
Connect to a mysql server, optionally selecting a working database and charset.
In the second form, `options_t` is a table that besides `host`, `user`, `pass`, `db`, `charset`, `port` can have the following fields:
* `unix_socket`: specify a unix socket filename to connect to
* `flags`: bit field corresponding to mysql [client_flag](http://dev.mysql.com/doc/refman/5.7/en/mysql-real-connect.html) parameter
* can be a table of form `{CLIENT_... = true | false, ...}`, or
* a number of form `bit.bor(mysql.C.CLIENT_..., ...)`
* `options`: a table of form `{MYSQL_OPT_... = value, ...}`, containing options per [mysql_options()](http://dev.mysql.com/doc/refman/5.7/en/mysql-options.html) (values are properly converted from Lua types)
* `attrs`: a table of form `{attr = value, ...}` containing attributes to be passed to the server per [mysql_options4()](http://dev.mysql.com/doc/refman/5.7/en/mysql-options4.html)
* `key`, `cert`, `ca`, `cpath`, `cipher`: parameters used to establish a [SSL connection](http://dev.mysql.com/doc/refman/5.7/en/mysql-ssl-set.html)
## `conn:close()`
Close a mysql connection freeing all associated resources (otherwise called when `conn` is garbage collected).
# Queries
## `conn:query(s)`
Execute a query. If the query string contains multiple statements, only the first statement is executed (see the section on multiple statements).
## `conn:escape(s) -> s`
Escape a value to be safely embedded in SQL queries. Assumes the current charset.
# Fetching results
## `conn:store_result() -> result`
Fetch all the rows in the current result set from the server and return a result object to read them one by one.
## `conn:use_result() -> result`
Return a result object that will fetch the rows in the current result set from the server on demand.
## `result:fetch([mode[, row_t]]) -> true, v1, v2, ... | row_t | nil`
Fetch and return the next row of values from the current result set. Returns nil if there are no more rows to fetch.
* the `mode` arg can contain any combination of the following letters:
* `"n"` - return values in a table with numeric indices as keys.
* `"a"` - return values in a table with field names as keys.
* `"s"` - do not convert numeric and time values to Lua types.
* the `row_t` arg is an optional table to store the row values in, instead of creating a new one on each fetch.
* options "a" and "n" can be combined to get a table with both numeric and field name indices.
* if `mode` is missing or if neither "a" nor "n" is specified, the values are returned to the caller unpacked, after a first value that is always true, to make it easy to distinguish between a valid `NULL` value in the first column and eof.
* in "n" mode, the result table may contain `nil` values so `#row_t` and `ipairs(row_t)` are out; instead iterate from 1 to `result:field_count()`.
* in "a" mode, for fields with duplicate names only the last field will be present.
* if `mode` does not specify `"s"`, the following conversions are applied on the returned values:
* integer types are returned as Lua numbers, except bigint which is returned as an `int64_t` cdata (or `uint64` if unsigned).
* date/time types are returned as tables in the usual `os.date"*t"` format (date fields are missing for time-only types and viceversa).
* decimal/numeric types are returned as Lua strings.
* bit types are returned as Lua numbers, and as `uint64_t` for bit types larger than 48 bits.
* enum and set types are always returned as strings.
## `result:rows([mode[, row_t]]) -> iterator() -> row_num, val1, val2, ...`
## `result:rows([mode[, row_t]]) -> iterator() -> row_num, row_t`
Convenience iterator for fetching (or refetching) all the rows from the current result set. The `mode` arg is the same as for `result:fetch()`, with the exception that in unpacked mode, the first `true` value is not present.
## `result:free()`
Free the result buffer (otherwise called when `result` is garbage collected).
## `result:row_count() -> n`
Return the number of rows in the current result set . This value is only correct if `result:store_result()` was previously called or if all the rows were fetched, in other words if `result:eof()` is true.
## `result:eof() -> true | false`
Check if there are no more rows to fetch. If `result:store_result()` was previously called, then all rows were already fetched, so `result:eof()` always returns `true` in this case.
## `result:seek(row_number)`
Seek back to a particular row number to refetch the rows from there.
# Query info
## `conn:field_count() -> n`
## `conn:affected_rows() -> n`
## `conn:insert_id() -> n`
## `conn:errno() -> n`
## `conn:sqlstate() -> s`
## `conn:warning_count() -> n`
## `conn:info() -> s`
Return various pieces of information about the previously executed query.
# Field info
## `result:field_count() -> n`
## `result:field_name(field_number) -> s`
## `result:field_type(field_number) -> type, length, decimals, unsigned`
## `result:field_info(field_number) -> info_t`
## `result:fields() -> iterator() -> i, info_t`
Return information about the fields (columns) in the current result set.
# Result bookmarks
## `result:tell() -> bookmark`
Get a bookmark to the current row to be later seeked into with `seek()`.
## `result:seek(bookmark)`
Seek to a previous saved row bookmark, or to a specific row number, fetching more rows as needed.
# Multiple statement queries
## `conn:next_result() -> true | false`
Skip over to the next result set in a multiple statement query, and make that the current result set. Return true if there more result sets after this one.
## `conn:more_results() -> true | false`
Check if there are more result sets after this one.
# Prepared statements
Prepared statements are a way to run queries and retrieve results more efficiently from the database, in particular:
* parametrized queries allow sending query parameters in their native format, avoiding having to convert values into strings and escaping those strings.
* running the same query multiple times with different parameters each time allows the server to reuse the parsed query and possibly the query plan between runs.
* fetching the result rows in preallocated buffers avoids dynamic allocation on each row fetch.
The flow for prepared statements is like this:
* call `conn:prepare()` to prepare a query and get a statement object.
* call `stmt:bind_params()` and `stmt:bind_result()` to get the buffer objects for setting params and getting row values.
* run the query multiple times; each time:
* call `params:set()` for each param to set param values.
* call `stmt:exec()` to run the query.
* fetch the resulting rows one by one; for each row:
* call `stmt:fetch()` to get the next row (it returns false if it was the last row).
* call `fields:get()` to read the values of the fetched row.
* call `stmt:close()` to free the statement object and all the associated resources from the server and client.
## `conn:prepare(query) -> stmt, params`
Prepare a query for multiple execution and return a statement object.
## `stmt:exec()`
Execute a prepared statement.
## `stmt:store_result()`
Fetch all the rows in the current result set from the server, otherwise the rows are fetched on demand.
## `stmt:fetch() -> true | false | true, 'truncated'`
Fetch the next row from the current result set. Use a binding buffer (see prepared statements I/O section) to get the row values. If present, second value indicates that at least one of the rows were truncated because the receiving buffer was too small for it.
## `stmt:free_result()`
Free the current result and all associated resources (otherwise the result is closed when the statement is closed).
## `stmt:close()`
Close a prepared statement and free all associated resources (otherwise the statement is closed when garbage collected).
## `stmt:next_result()`
Skip over to the next result set in a multiple statement query.
## `stmt:row_count() -> n`
## `stmt:affected_rows() -> n`
## `stmt:insert_id() -> n`
## `stmt:field_count() -> n`
## `stmt:errno() -> n`
## `stmt:sqlstate() -> s`
## `stmt:result_metadata() -> result`
## `stmt:fields() -> iterator() -> i, info_t`
Return various pieces of information on the executed statement.
## `stmt:reset()`
See [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-reset.html).
## `stmt:seek(row_number)`
## `stmt:tell() -> bookmark`
## `stmt:seek(bookmark)`
Seek into the current result set.
# Prepared statements I/O
## `stmt:bind_params(type1, ... | types_t) -> params`
Bind query parameters according to a list of type definitions (which can be given either packed or unpacked). Return a binding buffer object to be used for setting parameters.
The types must be valid, fully specified SQL types, eg.
* `smallint unsigned` specifies a 16bit unsigned integer
* `bit(32)` specifies a 32bit bit field
* `varchar(200)` specifies a 200 byte varchar.
## `params:set(i, number | int64_t | uint64_t | true | false)`
## `params:set(i, s[, size])`
## `params:set(i, cdata, size)`
## `params:set(i, {year=, month=, ...})`
## `params:set_date(i, [year], [month], [day], [hour], [min], [sec], [frac])`
Set a parameter value.
* the first form is for setting integers and bit fields.
* the second and third forms are for setting variable-sized fields and decimal/numeric fields.
* the last forms are for setting date/time/datetime/timestamp fields.
* the null type cannot be set (raises an error if attempted).
## `stmt:write(param_number, data[, size])`
Send a parameter value in chunks (for long, var-sized values).
## `stmt:bind_result([type1, ... | types_t | maxsize]) -> fields`
Bind result fields according to a list of type definitions (same as for params). Return a binding buffer object to be used for getting row values. If no types are specified, appropriate type definitions will be created automatically as to minimize type conversions. Variable-sized fields will get a buffer sized according to data type's maximum allowed size and `maxsize` (which defaults to 64k).
## `fields:get(i) -> value`
## `fields:get_datetime(i) -> year, month, day, hour, min, sec, frac`
Get a row value from the last fetched row. The same type conversions as for `result:fetch()` apply.
## `fields:is_null(i) -> true | false`
Check if a value is null without having to get it if it's not.
## `fields:is_truncated(i) -> true | false`
Check if a value was truncated due to insufficient buffer space.
==`stmt:bind_result_types([maxsize]) -> types_t`
Return the list of type definitions that describe the result of a prepared statement.
# Prepared statements settings
## `stmt:update_max_length() -> true | false`
## `stmt:set_update_max_length(true | false)`
## `stmt:cursor_type() -> mysql.C.MYSQL_CURSOR_TYPE_*`
## `stmt:set_cursor_type('CURSOR_TYPE_...')`
## `stmt:set_cursor_type(mysql.C.MYSQL_CURSOR_TYPE_...)`
## `stmt:prefetch_rows() -> n`
## `stmt:set_prefetch_rows(stmt, n)`
See [manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-attr-set.html) for these.
# Connection info
## `conn:set_charset(charset)`
Change the current charset.
## `conn:select_db(dbname)`
Change the current database.
## `conn:change_user(user, [pass], [db])`
Change the current user and optionally select a database.
## `conn:set_multiple_statements(true | false)`
Enable or disable support for query strings containing multiple statements separated by a semi-colon.
## `conn:charset() -> s`
Get the current charset.
## `conn:charset_info() -> info_t`
Return a table of information about the current charset.
## `conn:ping() -> true | false`
Check if the connection to the server is still alive.
## `conn:thread_id() -> id`
## `conn:stat() -> s`
## `conn:server_info() -> s`
## `conn:host_info() -> s`
## `conn:server_version() -> n`
## `conn:proto_info() -> n`
## `conn:ssl_cipher() -> s`
Return various pieces of information about the connection and server.
# Transactions
## `conn:commit()`
## `conn:rollback()`
Commit/rollback the current transaction.
## `conn:set_autocommit([true | false])`
Set autocommit on the connection (set to true if no argument is given).
# Reflection
## `conn:list_dbs([wildcard]) -> result`
## `conn:list_tables([wildcard]) -> result`
## `conn:list_processes() -> result`
Return information about databases, tables and proceses as a stored result object that can be iterated etc. using the methods of result objects. The optional `wild` parameter may contain the wildcard characters `"%"` or `"_"`, similar to executing the query `SHOW DATABASES [LIKE wild]`.
# Remote control
## `conn:kill(pid)`
Kill a connection with a specific `pid`.
## `conn:shutdown([level])`
Shutdown the server. `SHUTDOWN` priviledge needed. The level argument is reserved for future versions of mysql.
## `conn:refresh(options)`
Flush tables or caches, or resets replication server information. `RELOAD` priviledge needed. Options are either a table of form `{REFRESH_... = true | false, ...}` or a number of form `bit.bor(mysql.C.MYSQL_REFRESH_*, ...)` and they are as described in the [mysql manual](http://dev.mysql.com/doc/refman/5.7/en/mysql-refresh.html).
## `conn:dump_debug_info()`
Instruct the server to dump debug info in the log file. `SUPER` priviledge needed.
# Client library info
## `mysql.thread_safe() -> true | false`
## `mysql.client_info() -> s`
## `mysql.client_version() -> n`
----
## TODO
* reader function for getting large blobs in chunks using mysql_stmt_fetch_column: `stmt:chunks(i[, bufsize])` or `stmt:read()` ?
* test with Linux, OSX, 64bit OSs
* support connecting against different runtimes (client_library option)

562
mysql_h.lua Normal file
View File

@ -0,0 +1,562 @@
--result of `cpp mysql.h` plus lots of cleanup and defines from other headers; by Cosmin Apreutesei; MySQL Connector/C 6.1
--NOTE that MySQL Connector/C is GPL software. Could this file be considered "derived work" then?
local ffi = require'ffi'
ffi.cdef[[
typedef char my_bool;
typedef unsigned long long my_ulonglong;
enum {
MYSQL_PORT = 3306,
MYSQL_ERRMSG_SIZE = 512,
// status return codes
MYSQL_NO_DATA = 100,
MYSQL_DATA_TRUNCATED = 101
};
// -------------------------------------------------------------------------------- error constants
// NOTE: added MYSQL_ prefix to these.
enum mysql_error_code {
MYSQL_CR_UNKNOWN_ERROR = 2000,
MYSQL_CR_SOCKET_CREATE_ERROR = 2001,
MYSQL_CR_CONNECTION_ERROR = 2002,
MYSQL_CR_CONN_HOST_ERROR = 2003,
MYSQL_CR_IPSOCK_ERROR = 2004,
MYSQL_CR_UNKNOWN_HOST = 2005,
MYSQL_CR_SERVER_GONE_ERROR = 2006,
MYSQL_CR_VERSION_ERROR = 2007,
MYSQL_CR_OUT_OF_MEMORY = 2008,
MYSQL_CR_WRONG_HOST_INFO = 2009,
MYSQL_CR_LOCALHOST_CONNECTION = 2010,
MYSQL_CR_TCP_CONNECTION = 2011,
MYSQL_CR_SERVER_HANDSHAKE_ERR = 2012,
MYSQL_CR_SERVER_LOST = 2013,
MYSQL_CR_COMMANDS_OUT_OF_SYNC = 2014,
MYSQL_CR_NAMEDPIPE_CONNECTION = 2015,
MYSQL_CR_NAMEDPIPEWAIT_ERROR = 2016,
MYSQL_CR_NAMEDPIPEOPEN_ERROR = 2017,
MYSQL_CR_NAMEDPIPESETSTATE_ERROR = 2018,
MYSQL_CR_CANT_READ_CHARSET = 2019,
MYSQL_CR_NET_PACKET_TOO_LARGE = 2020,
MYSQL_CR_EMBEDDED_CONNECTION = 2021,
MYSQL_CR_PROBE_SLAVE_STATUS = 2022,
MYSQL_CR_PROBE_SLAVE_HOSTS = 2023,
MYSQL_CR_PROBE_SLAVE_CONNECT = 2024,
MYSQL_CR_PROBE_MASTER_CONNECT = 2025,
MYSQL_CR_SSL_CONNECTION_ERROR = 2026,
MYSQL_CR_MALFORMED_PACKET = 2027,
MYSQL_CR_WRONG_LICENSE = 2028,
/* new 4.1 error codes */
MYSQL_CR_NULL_POINTER = 2029,
MYSQL_CR_NO_PREPARE_STMT = 2030,
MYSQL_CR_PARAMS_NOT_BOUND = 2031,
MYSQL_CR_DATA_TRUNCATED = 2032,
MYSQL_CR_NO_PARAMETERS_EXISTS = 2033,
MYSQL_CR_INVALID_PARAMETER_NO = 2034,
MYSQL_CR_INVALID_BUFFER_USE = 2035,
MYSQL_CR_UNSUPPORTED_PARAM_TYPE = 2036,
MYSQL_CR_SHARED_MEMORY_CONNECTION = 2037,
MYSQL_CR_SHARED_MEMORY_CONNECT_REQUEST_ERROR = 2038,
MYSQL_CR_SHARED_MEMORY_CONNECT_ANSWER_ERROR = 2039,
MYSQL_CR_SHARED_MEMORY_CONNECT_FILE_MAP_ERROR = 2040,
MYSQL_CR_SHARED_MEMORY_CONNECT_MAP_ERROR = 2041,
MYSQL_CR_SHARED_MEMORY_FILE_MAP_ERROR = 2042,
MYSQL_CR_SHARED_MEMORY_MAP_ERROR = 2043,
MYSQL_CR_SHARED_MEMORY_EVENT_ERROR = 2044,
MYSQL_CR_SHARED_MEMORY_CONNECT_ABANDONED_ERROR = 2045,
MYSQL_CR_SHARED_MEMORY_CONNECT_SET_ERROR = 2046,
MYSQL_CR_CONN_UNKNOW_PROTOCOL = 2047,
MYSQL_CR_INVALID_CONN_HANDLE = 2048,
MYSQL_CR_SECURE_AUTH = 2049,
MYSQL_CR_FETCH_CANCELED = 2050,
MYSQL_CR_NO_DATA = 2051,
MYSQL_CR_NO_STMT_METADATA = 2052,
MYSQL_CR_NO_RESULT_SET = 2053,
MYSQL_CR_NOT_IMPLEMENTED = 2054,
MYSQL_CR_SERVER_LOST_EXTENDED = 2055,
MYSQL_CR_STMT_CLOSED = 2056,
MYSQL_CR_NEW_STMT_METADATA = 2057,
MYSQL_CR_ALREADY_CONNECTED = 2058,
MYSQL_CR_AUTH_PLUGIN_CANNOT_LOAD = 2059,
MYSQL_CR_DUPLICATE_CONNECTION_ATTR = 2060,
MYSQL_CR_AUTH_PLUGIN_ERR = 2061
};
// -------------------------------------------------------------------------------- client library
unsigned int mysql_thread_safe(void); // is the client library thread safe?
const char *mysql_get_client_info(void);
unsigned long mysql_get_client_version(void);
// -------------------------------------------------------------------------------- connections
typedef struct MYSQL_ MYSQL;
MYSQL * mysql_init(MYSQL *mysql);
enum mysql_protocol_type
{
MYSQL_PROTOCOL_DEFAULT, MYSQL_PROTOCOL_TCP, MYSQL_PROTOCOL_SOCKET,
MYSQL_PROTOCOL_PIPE, MYSQL_PROTOCOL_MEMORY
};
enum mysql_option
{
MYSQL_OPT_CONNECT_TIMEOUT, MYSQL_OPT_COMPRESS, MYSQL_OPT_NAMED_PIPE,
MYSQL_INIT_COMMAND, MYSQL_READ_DEFAULT_FILE, MYSQL_READ_DEFAULT_GROUP,
MYSQL_SET_CHARSET_DIR, MYSQL_SET_CHARSET_NAME, MYSQL_OPT_LOCAL_INFILE,
MYSQL_OPT_PROTOCOL, MYSQL_SHARED_MEMORY_BASE_NAME, MYSQL_OPT_READ_TIMEOUT,
MYSQL_OPT_WRITE_TIMEOUT, MYSQL_OPT_USE_RESULT,
MYSQL_OPT_USE_REMOTE_CONNECTION, MYSQL_OPT_USE_EMBEDDED_CONNECTION,
MYSQL_OPT_GUESS_CONNECTION, MYSQL_SET_CLIENT_IP, MYSQL_SECURE_AUTH,
MYSQL_REPORT_DATA_TRUNCATION, MYSQL_OPT_RECONNECT,
MYSQL_OPT_SSL_VERIFY_SERVER_CERT, MYSQL_PLUGIN_DIR, MYSQL_DEFAULT_AUTH,
MYSQL_OPT_BIND,
MYSQL_OPT_SSL_KEY, MYSQL_OPT_SSL_CERT,
MYSQL_OPT_SSL_CA, MYSQL_OPT_SSL_CAPATH, MYSQL_OPT_SSL_CIPHER,
MYSQL_OPT_SSL_CRL, MYSQL_OPT_SSL_CRLPATH,
MYSQL_OPT_CONNECT_ATTR_RESET, MYSQL_OPT_CONNECT_ATTR_ADD,
MYSQL_OPT_CONNECT_ATTR_DELETE,
MYSQL_SERVER_PUBLIC_KEY,
MYSQL_ENABLE_CLEARTEXT_PLUGIN,
MYSQL_OPT_CAN_HANDLE_EXPIRED_PASSWORDS
};
int mysql_options(MYSQL *mysql, enum mysql_option option, const void *arg);
int mysql_options4(MYSQL *mysql, enum mysql_option option, const void *arg1, const void *arg2);
// NOTE: added MYSQL_ prefix to these. Also, these are bit flags not exclusive enum values.
enum {
MYSQL_CLIENT_LONG_PASSWORD = 1, /* new more secure passwords */
MYSQL_CLIENT_FOUND_ROWS = 2, /* Found instead of affected rows */
MYSQL_CLIENT_LONG_FLAG = 4, /* Get all column flags */
MYSQL_CLIENT_CONNECT_WITH_DB = 8, /* One can specify db on connect */
MYSQL_CLIENT_NO_SCHEMA = 16, /* Don't allow database.table.column */
MYSQL_CLIENT_COMPRESS = 32, /* Can use compression protocol */
MYSQL_CLIENT_ODBC = 64, /* ODBC client */
MYSQL_CLIENT_LOCAL_FILES = 128, /* Can use LOAD DATA LOCAL */
MYSQL_CLIENT_IGNORE_SPACE = 256, /* Ignore spaces before '(' */
MYSQL_CLIENT_PROTOCOL_41 = 512, /* New 4.1 protocol */
MYSQL_CLIENT_INTERACTIVE = 1024, /* This is an interactive client */
MYSQL_CLIENT_SSL = 2048, /* Switch to SSL after handshake */
MYSQL_CLIENT_IGNORE_SIGPIPE = 4096, /* IGNORE sigpipes */
MYSQL_CLIENT_TRANSACTIONS = 8192, /* Client knows about transactions */
MYSQL_CLIENT_RESERVED = 16384, /* Old flag for 4.1 protocol */
MYSQL_CLIENT_SECURE_CONNECTION = (1UL << 15), /* New 4.1 authentication */
MYSQL_CLIENT_MULTI_STATEMENTS = (1UL << 16), /* Enable/disable multi-stmt support */
MYSQL_CLIENT_MULTI_RESULTS = (1UL << 17), /* Enable/disable multi-results */
MYSQL_CLIENT_PS_MULTI_RESULTS = (1UL << 18), /* Multi-results in PS-protocol */
MYSQL_CLIENT_PLUGIN_AUTH = (1UL << 19), /* Client supports plugin authentication */
MYSQL_CLIENT_CONNECT_ATTRS = (1UL << 20), /* Client supports connection attributes */
/* Enable authentication response packet to be larger than 255 bytes. */
MYSQL_CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA = (1UL << 21),
/* Don't close the connection for a connection with expired password. */
MYSQL_CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS = (1UL << 22),
MYSQL_CLIENT_SSL_VERIFY_SERVER_CERT = (1UL << 30),
MYSQL_CLIENT_REMEMBER_OPTIONS = (1UL << 31)
};
MYSQL * mysql_real_connect(MYSQL *mysql, const char *host,
const char *user,
const char *passwd,
const char *db,
unsigned int port,
const char *unix_socket,
unsigned long clientflag);
void mysql_close(MYSQL *sock);
int mysql_set_character_set(MYSQL *mysql, const char *csname);
int mysql_select_db(MYSQL *mysql, const char *db);
my_bool mysql_change_user(MYSQL *mysql, const char *user, const char *passwd, const char *db);
my_bool mysql_ssl_set(MYSQL *mysql, const char *key,
const char *cert, const char *ca,
const char *capath, const char *cipher);
enum enum_mysql_set_option
{
MYSQL_OPTION_MULTI_STATEMENTS_ON,
MYSQL_OPTION_MULTI_STATEMENTS_OFF
};
int mysql_set_server_option(MYSQL *mysql, enum enum_mysql_set_option option);
// -------------------------------------------------------------------------------- connection info
const char * mysql_character_set_name(MYSQL *mysql);
typedef struct character_set
{
unsigned int number;
unsigned int state;
const char *csname;
const char *name;
const char *comment;
const char *dir;
unsigned int mbminlen;
unsigned int mbmaxlen;
} MY_CHARSET_INFO;
void mysql_get_character_set_info(MYSQL *mysql, MY_CHARSET_INFO *charset);
int mysql_ping(MYSQL *mysql);
unsigned long mysql_thread_id(MYSQL *mysql);
const char * mysql_stat(MYSQL *mysql);
const char * mysql_get_server_info(MYSQL *mysql);
const char * mysql_get_host_info(MYSQL *mysql);
unsigned long mysql_get_server_version(MYSQL *mysql);
unsigned int mysql_get_proto_info(MYSQL *mysql);
const char * mysql_get_ssl_cipher(MYSQL *mysql);
// -------------------------------------------------------------------------------- transactions
my_bool mysql_commit(MYSQL * mysql);
my_bool mysql_rollback(MYSQL * mysql);
my_bool mysql_autocommit(MYSQL * mysql, my_bool auto_mode);
// -------------------------------------------------------------------------------- queries
unsigned long mysql_real_escape_string(MYSQL *mysql, char *to, const char *from, unsigned long length);
int mysql_real_query(MYSQL *mysql, const char *q, unsigned long length);
// -------------------------------------------------------------------------------- query info
unsigned int mysql_field_count(MYSQL *mysql);
my_ulonglong mysql_affected_rows(MYSQL *mysql);
my_ulonglong mysql_insert_id(MYSQL *mysql);
unsigned int mysql_errno(MYSQL *mysql);
const char * mysql_error(MYSQL *mysql);
const char * mysql_sqlstate(MYSQL *mysql);
unsigned int mysql_warning_count(MYSQL *mysql);
const char * mysql_info(MYSQL *mysql);
// -------------------------------------------------------------------------------- query results
int mysql_next_result(MYSQL *mysql);
my_bool mysql_more_results(MYSQL *mysql);
// NOTE: normally we would've made this an opaque handle, but we need to expose
// the connection handle from it so we can report errors for unbuffered reads.
typedef struct st_mysql_res {
my_ulonglong __row_count;
void *__fields;
void *__data;
void *__data_cursor;
void *__lengths;
MYSQL *conn; /* for unbuffered reads */
} MYSQL_RES;
MYSQL_RES *mysql_store_result(MYSQL *mysql);
MYSQL_RES *mysql_use_result(MYSQL *mysql);
void mysql_free_result(MYSQL_RES *result);
my_ulonglong mysql_num_rows(MYSQL_RES *res);
unsigned int mysql_num_fields(MYSQL_RES *res);
my_bool mysql_eof(MYSQL_RES *res);
unsigned long * mysql_fetch_lengths(MYSQL_RES *result);
typedef char **MYSQL_ROW;
MYSQL_ROW mysql_fetch_row(MYSQL_RES *result);
void mysql_data_seek(MYSQL_RES *result, my_ulonglong offset);
typedef struct MYSQL_ROWS_ MYSQL_ROWS;
typedef MYSQL_ROWS *MYSQL_ROW_OFFSET;
MYSQL_ROW_OFFSET mysql_row_tell(MYSQL_RES *res);
MYSQL_ROW_OFFSET mysql_row_seek(MYSQL_RES *result, MYSQL_ROW_OFFSET offset);
// -------------------------------------------------------------------------------- query field info
enum enum_field_types {
MYSQL_TYPE_DECIMAL, MYSQL_TYPE_TINY,
MYSQL_TYPE_SHORT, MYSQL_TYPE_LONG,
MYSQL_TYPE_FLOAT, MYSQL_TYPE_DOUBLE,
MYSQL_TYPE_NULL, MYSQL_TYPE_TIMESTAMP,
MYSQL_TYPE_LONGLONG,MYSQL_TYPE_INT24,
MYSQL_TYPE_DATE, MYSQL_TYPE_TIME,
MYSQL_TYPE_DATETIME, MYSQL_TYPE_YEAR,
MYSQL_TYPE_NEWDATE, MYSQL_TYPE_VARCHAR,
MYSQL_TYPE_BIT,
MYSQL_TYPE_TIMESTAMP2,
MYSQL_TYPE_DATETIME2,
MYSQL_TYPE_TIME2,
MYSQL_TYPE_NEWDECIMAL=246,
MYSQL_TYPE_ENUM=247,
MYSQL_TYPE_SET=248,
MYSQL_TYPE_TINY_BLOB=249,
MYSQL_TYPE_MEDIUM_BLOB=250,
MYSQL_TYPE_LONG_BLOB=251,
MYSQL_TYPE_BLOB=252,
MYSQL_TYPE_VAR_STRING=253,
MYSQL_TYPE_STRING=254,
MYSQL_TYPE_GEOMETRY=255
};
// NOTE: added MYSQL_ prefix to these. Also, these are bit flags, not exclusive enum values.
enum {
MYSQL_NOT_NULL_FLAG = 1, /* Field can't be NULL */
MYSQL_PRI_KEY_FLAG = 2, /* Field is part of a primary key */
MYSQL_UNIQUE_KEY_FLAG = 4, /* Field is part of a unique key */
MYSQL_MULTIPLE_KEY_FLAG = 8, /* Field is part of a key */
MYSQL_BLOB_FLAG = 16, /* Field is a blob */
MYSQL_UNSIGNED_FLAG = 32, /* Field is unsigned */
MYSQL_ZEROFILL_FLAG = 64, /* Field is zerofill */
MYSQL_BINARY_FLAG = 128, /* Field is binary */
/* The following are only sent to new clients */
MYSQL_ENUM_FLAG = 256, /* field is an enum */
MYSQL_AUTO_INCREMENT_FLAG = 512, /* field is a autoincrement field */
MYSQL_TIMESTAMP_FLAG = 1024, /* Field is a timestamp */
MYSQL_SET_FLAG = 2048, /* field is a set */
MYSQL_NO_DEFAULT_VALUE_FLAG = 4096, /* Field doesn't have default value */
MYSQL_ON_UPDATE_NOW_FLAG = 8192, /* Field is set to NOW on UPDATE */
MYSQL_NUM_FLAG = 32768, /* Field is num (for clients) */
MYSQL_PART_KEY_FLAG = 16384, /* Intern; Part of some key */
MYSQL_GROUP_FLAG = 32768, /* Intern: Group field */
MYSQL_UNIQUE_FLAG = 65536, /* Intern: Used by sql_yacc */
MYSQL_BINCMP_FLAG = 131072, /* Intern: Used by sql_yacc */
MYSQL_GET_FIXED_FIELDS_FLAG = (1 << 18), /* Used to get fields in item tree */
MYSQL_FIELD_IN_PART_FUNC_FLAG = (1 << 19) /* Field part of partition func */
};
typedef struct st_mysql_field {
char *name;
char *org_name;
char *table;
char *org_table;
char *db;
char *catalog;
char *def;
unsigned long length;
unsigned long max_length;
unsigned int name_length;
unsigned int org_name_length;
unsigned int table_length;
unsigned int org_table_length;
unsigned int db_length;
unsigned int catalog_length;
unsigned int def_length;
unsigned int flags;
unsigned int decimals;
unsigned int charsetnr;
enum enum_field_types type;
void *extension;
} MYSQL_FIELD;
MYSQL_FIELD *mysql_fetch_field_direct(MYSQL_RES *res, unsigned int fieldnr);
// -------------------------------------------------------------------------------- reflection
MYSQL_RES *mysql_list_dbs(MYSQL *mysql, const char *wild);
MYSQL_RES *mysql_list_tables(MYSQL *mysql, const char *wild);
MYSQL_RES *mysql_list_processes(MYSQL *mysql);
// -------------------------------------------------------------------------------- remote control
int mysql_kill(MYSQL *mysql, unsigned long pid);
// NOTE: added MYSQL_ prefix.
enum mysql_enum_shutdown_level {
MYSQL_SHUTDOWN_DEFAULT = 0,
MYSQL_SHUTDOWN_WAIT_CONNECTIONS = 1,
MYSQL_SHUTDOWN_WAIT_TRANSACTIONS = 2,
MYSQL_SHUTDOWN_WAIT_UPDATES = 8,
MYSQL_SHUTDOWN_WAIT_ALL_BUFFERS = 16,
MYSQL_SHUTDOWN_WAIT_CRITICAL_BUFFERS = 17,
MYSQL_KILL_QUERY = 254,
MYSQL_KILL_CONNECTION = 255
};
int mysql_shutdown(MYSQL *mysql, enum mysql_enum_shutdown_level shutdown_level); // needs SHUTDOWN priviledge
// NOTE: added MYSQL_ prefix. not really enum values either, just bit flags.
enum {
MYSQL_REFRESH_GRANT = 1, /* Refresh grant tables */
MYSQL_REFRESH_LOG = 2, /* Start on new log file */
MYSQL_REFRESH_TABLES = 4, /* close all tables */
MYSQL_REFRESH_HOSTS = 8, /* Flush host cache */
MYSQL_REFRESH_STATUS = 16, /* Flush status variables */
MYSQL_REFRESH_THREADS = 32, /* Flush thread cache */
MYSQL_REFRESH_SLAVE = 64, /* Reset master info and restart slave thread */
MYSQL_REFRESH_MASTER = 128, /* Remove all bin logs in the index and truncate the index */
MYSQL_REFRESH_ERROR_LOG = 256, /* Rotate only the erorr log */
MYSQL_REFRESH_ENGINE_LOG = 512, /* Flush all storage engine logs */
MYSQL_REFRESH_BINARY_LOG = 1024, /* Flush the binary log */
MYSQL_REFRESH_RELAY_LOG = 2048, /* Flush the relay log */
MYSQL_REFRESH_GENERAL_LOG = 4096, /* Flush the general log */
MYSQL_REFRESH_SLOW_LOG = 8192, /* Flush the slow query log */
/* The following can't be set with mysql_refresh() */
MYSQL_REFRESH_READ_LOCK = 16384, /* Lock tables for read */
MYSQL_REFRESH_FAST = 32768, /* Intern flag */
/* RESET (remove all queries) from query cache */
MYSQL_REFRESH_QUERY_CACHE = 65536,
MYSQL_REFRESH_QUERY_CACHE_FREE = 0x20000L, /* pack query cache */
MYSQL_REFRESH_DES_KEY_FILE = 0x40000L,
MYSQL_REFRESH_USER_RESOURCES = 0x80000L,
MYSQL_REFRESH_FOR_EXPORT = 0x100000L, /* FLUSH TABLES ... FOR EXPORT */
};
int mysql_refresh(MYSQL *mysql, unsigned int refresh_options); // needs RELOAD priviledge
int mysql_dump_debug_info(MYSQL *mysql); // needs SUPER priviledge
// -------------------------------------------------------------------------------- prepared statements
typedef struct MYSQL_STMT_ MYSQL_STMT;
MYSQL_STMT * mysql_stmt_init(MYSQL *mysql);
my_bool mysql_stmt_close(MYSQL_STMT * stmt);
int mysql_stmt_prepare(MYSQL_STMT *stmt, const char *query, unsigned long length);
int mysql_stmt_execute(MYSQL_STMT *stmt);
int mysql_stmt_next_result(MYSQL_STMT *stmt);
int mysql_stmt_store_result(MYSQL_STMT *stmt);
my_bool mysql_stmt_free_result(MYSQL_STMT *stmt);
MYSQL_RES *mysql_stmt_result_metadata(MYSQL_STMT *stmt);
my_ulonglong mysql_stmt_num_rows(MYSQL_STMT *stmt);
my_ulonglong mysql_stmt_affected_rows(MYSQL_STMT *stmt);
my_ulonglong mysql_stmt_insert_id(MYSQL_STMT *stmt);
unsigned int mysql_stmt_field_count(MYSQL_STMT *stmt);
unsigned int mysql_stmt_errno(MYSQL_STMT * stmt);
const char *mysql_stmt_error(MYSQL_STMT * stmt);
const char *mysql_stmt_sqlstate(MYSQL_STMT * stmt);
int mysql_stmt_fetch(MYSQL_STMT *stmt);
my_bool mysql_stmt_reset(MYSQL_STMT * stmt);
void mysql_stmt_data_seek(MYSQL_STMT *stmt, my_ulonglong offset);
MYSQL_ROW_OFFSET mysql_stmt_row_tell(MYSQL_STMT *stmt);
MYSQL_ROW_OFFSET mysql_stmt_row_seek(MYSQL_STMT *stmt, MYSQL_ROW_OFFSET offset);
// NOTE: added MYSQL_ prefix to these.
enum enum_cursor_type
{
MYSQL_CURSOR_TYPE_NO_CURSOR= 0,
MYSQL_CURSOR_TYPE_READ_ONLY= 1,
MYSQL_CURSOR_TYPE_FOR_UPDATE= 2,
MYSQL_CURSOR_TYPE_SCROLLABLE= 4
};
enum enum_stmt_attr_type
{
STMT_ATTR_UPDATE_MAX_LENGTH,
STMT_ATTR_CURSOR_TYPE,
STMT_ATTR_PREFETCH_ROWS
};
my_bool mysql_stmt_attr_set(MYSQL_STMT *stmt, enum enum_stmt_attr_type attr_type, const void *attr);
my_bool mysql_stmt_attr_get(MYSQL_STMT *stmt, enum enum_stmt_attr_type attr_type, void *attr);
my_bool mysql_stmt_send_long_data(MYSQL_STMT *stmt,
unsigned int param_number,
const char *data,
unsigned long length);
// -------------------------------------------------------------------------------- prepared statements / bindings
enum enum_mysql_timestamp_type
{
MYSQL_TIMESTAMP_NONE= -2, MYSQL_TIMESTAMP_ERROR= -1,
MYSQL_TIMESTAMP_DATE= 0, MYSQL_TIMESTAMP_DATETIME= 1, MYSQL_TIMESTAMP_TIME= 2
};
typedef struct st_mysql_time
{
unsigned int year, month, day, hour, minute, second;
unsigned long second_part; /**< microseconds */
my_bool neg;
enum enum_mysql_timestamp_type time_type;
} MYSQL_TIME;
unsigned long mysql_stmt_param_count(MYSQL_STMT * stmt);
typedef struct NET_ NET;
typedef struct st_mysql_bind
{
unsigned long *length;
my_bool *is_null;
void *buffer;
my_bool *error;
unsigned char *row_ptr;
void (*store_param_func)(NET *net, struct st_mysql_bind *param);
void (*fetch_result)(struct st_mysql_bind *, MYSQL_FIELD *,
unsigned char **row);
void (*skip_result)(struct st_mysql_bind *, MYSQL_FIELD *,
unsigned char **row);
unsigned long buffer_length;
unsigned long offset;
unsigned long length_value;
unsigned int param_number;
unsigned int pack_length;
enum enum_field_types buffer_type;
my_bool error_value;
my_bool is_unsigned;
my_bool long_data_used;
my_bool is_null_value;
void *extension;
} MYSQL_BIND;
my_bool mysql_stmt_bind_param(MYSQL_STMT * stmt, MYSQL_BIND * bnd);
my_bool mysql_stmt_bind_result(MYSQL_STMT * stmt, MYSQL_BIND * bnd);
int mysql_stmt_fetch_column(MYSQL_STMT *stmt, MYSQL_BIND *bind_arg,
unsigned int column,
unsigned long offset);
// -------------------------------------------------------------------------------- LOAD DATA LOCAL INFILE hooks
void mysql_set_local_infile_handler(MYSQL *mysql,
int (*local_infile_init)(void **, const char *, void *),
int (*local_infile_read)(void *, char *, unsigned int),
void (*local_infile_end)(void *),
int (*local_infile_error)(void *, char*, unsigned int),
void *);
void mysql_set_local_infile_default(MYSQL *mysql);
// -------------------------------------------------------------------------------- mysql proxy scripting
my_bool mysql_read_query_result(MYSQL *mysql);
// -------------------------------------------------------------------------------- debugging
void mysql_debug(const char *debug);
// -------------------------------------------------------------------------------- present but not documented
int mysql_server_init(int argc, char **argv, char **groups);
void mysql_server_end(void);
char *get_tty_password(const char *opt_message);
void myodbc_remove_escape(MYSQL *mysql, char *name);
my_bool mysql_embedded(void);
int mysql_send_query(MYSQL *mysql, const char *q, unsigned long length);
// -------------------------------------------------------------------------------- redundant functions
my_bool mysql_thread_init(void); // called anyway
void mysql_thread_end(void); // called anyway
const char *mysql_errno_to_sqlstate(unsigned int mysql_errno); // use mysql_sqlstate
unsigned long mysql_hex_string(char *to, const char *from, unsigned long from_length); // bad taste
// redundant ways to get field info (we use use mysql_field_count and mysql_fetch_field_direct)
MYSQL_FIELD *mysql_fetch_field(MYSQL_RES *result);
MYSQL_FIELD *mysql_fetch_fields(MYSQL_RES *res);
typedef unsigned int MYSQL_FIELD_OFFSET;
MYSQL_FIELD_OFFSET mysql_field_tell(MYSQL_RES *res);
MYSQL_FIELD_OFFSET mysql_field_seek(MYSQL_RES *result, MYSQL_FIELD_OFFSET offset);
MYSQL_RES *mysql_stmt_param_metadata(MYSQL_STMT *stmt);
// -------------------------------------------------------------------------------- deprecated functions
unsigned long mysql_escape_string(char *to, const char *from, unsigned long from_length); // use mysql_real_escape_string
int mysql_query(MYSQL *mysql, const char *q); // use mysql_real_query
MYSQL_RES *mysql_list_fields(MYSQL *mysql, const char *table, const char *wild); // use "SHOW COLUMNS FROM table"
]]

144
mysql_print.lua Normal file
View File

@ -0,0 +1,144 @@
--mysql table pretty printing
local function ellipsis(s,n)
return #s > n and (s:sub(1,n-3) .. '...') or s
end
local align = {}
function align.left(s,n)
s = s..(' '):rep(n - #s)
return ellipsis(s,n)
end
function align.right(s,n)
s = (' '):rep(n - #s)..s
return ellipsis(s,n)
end
function align.center(s,n)
local total = n - #s
local left = math.floor(total / 2)
local right = math.ceil(total / 2)
s = (' '):rep(left)..s..(' '):rep(right)
return ellipsis(s,n)
end
local function fit(s,n,al)
return align[al or 'left'](s,n)
end
local function print_table(fields, rows, aligns, minsize, print)
print = print or _G.print
minsize = minsize or math.huge
local max_sizes = {}
for i=1,#rows do
for j=1,#fields do
max_sizes[j] = math.min(minsize, math.max(max_sizes[j] or 0, #rows[i][j]))
end
end
local totalsize = 0
for j=1,#fields do
max_sizes[j] = math.max(max_sizes[j] or 0, #fields[j])
totalsize = totalsize + max_sizes[j] + 3
end
print()
local s, ps = '', ''
for j=1,#fields do
s = s .. fit(fields[j], max_sizes[j], 'center') .. ' | '
ps = ps .. ('-'):rep(max_sizes[j]) .. ' + '
end
print(s)
print(ps)
for i=1,#rows do
local s = ''
for j=1,#fields do
local val = rows[i][j]
s = s .. fit(val, max_sizes[j], aligns and aligns[j]) .. ' | '
end
print(s)
end
print()
end
local function invert_table(fields, rows, minsize)
local ft, rt = {'field'}, {}
for i=1,#rows do
ft[i+1] = tostring(i)
end
for j=1,#fields do
local row = {fields[j]}
for i=1,#rows do
row[i+1] = rows[i][j]
end
rt[j] = row
end
return ft, rt
end
local function format_cell(v)
if v == nil then
return 'NULL'
else
return tostring(v)
end
end
local function cell_align(current_align, cell_value)
if current_align == 'left' then return 'left' end
if type(cell_value) == 'number' or type(cell_value) == 'cdata' then return 'right' end
return 'left'
end
local function print_result(res, minsize, print)
local fields = {}
for i,field in res:fields() do
fields[i] = field.name
end
local rows = {}
local aligns = {} --deduced from values
for i,row in res:rows'n' do
local t = {}
for j=1,#fields do
t[j] = format_cell(row[j])
aligns[j] = cell_align(aligns[j], row[j])
end
rows[i] = t
end
print_table(fields, rows, aligns, minsize, print)
end
local function print_statement(stmt, minsize, print)
local res = stmt:bind_result()
local fields = {}
for i,field in stmt:fields() do
fields[i] = field.name
end
local rows = {}
local aligns = {}
while stmt:fetch() do
local row = {}
for i=1,#fields do
local v = res:get(i)
row[i] = format_cell(v)
aligns[i] = cell_align(aligns[i], v)
end
rows[#rows+1] = row
end
stmt:close()
print_table(fields, rows, aligns, minsize, print)
end
if not ... then require'mysql_test' end
return {
fit = fit,
format_cell = format_cell,
table = print_table,
result = print_result,
statement = print_statement,
}

548
mysql_test.lua Normal file
View File

@ -0,0 +1,548 @@
local mysql = require'mysql'
local glue = require'glue'
local pformat = require'pp'.pformat
local myprint = require'mysql_print'
local ffi = require'ffi'
--helpers
local print_table = myprint.table
local print_result = myprint.result
local fit = myprint.fit
local function assert_deepequal(t1, t2) --assert the equality of two values
assert(type(t1) == type(t2), type(t1)..' ~= '..type(t2))
if type(t1) == 'table' then
for k,v in pairs(t1) do assert_deepequal(t2[k], v) end
for k,v in pairs(t2) do assert_deepequal(t1[k], v) end
else
assert(t1 == t2, pformat(t1) .. ' ~= ' .. pformat(t2))
end
end
local function print_fields(fields_iter)
local fields = {'name', 'type', 'type_flag', 'length', 'max_length', 'decimals', 'charsetnr',
'org_name', 'table', 'org_table', 'db', 'catalog', 'def', 'extension'}
local rows = {}
local aligns = {}
for i,field in fields_iter do
rows[i] = {}
for j=1,#fields do
local v = field[fields[j]]
rows[i][j] = tostring(v)
aligns[j] = type(v) == 'number' and 'right' or 'left'
end
end
print_table(fields, rows, aligns)
end
--client library
print('mysql.thread_safe() ', '->', pformat(mysql.thread_safe()))
print('mysql.client_info() ', '->', pformat(mysql.client_info()))
print('mysql.client_version()', '->', pformat(mysql.client_version()))
--connections
local t = {
host = 'localhost',
user = 'root',
db = 'test',
options = {
MYSQL_SECURE_AUTH = true,
MYSQL_OPT_READ_TIMEOUT = 1,
},
flags = {
CLIENT_LONG_PASSWORD = true,
},
}
local conn = mysql.connect(t)
print('mysql.connect ', pformat(t, ' '), '->', conn)
print('conn:change_user( ', pformat(t.user), ')', conn:change_user(t.user))
print('conn:select_db( ', pformat(t.db), ')', conn:select_db(t.db))
print('conn:set_multiple_statements(', pformat(true), ')', conn:set_multiple_statements(true))
print('conn:set_charset( ', pformat('utf8'), ')', conn:set_charset('utf8'))
--conn info
print('conn:charset_name() ', '->', pformat(conn:charset())); assert(conn:charset() == 'utf8')
print('conn:charset_info() ', '->', pformat(conn:charset_info(), ' '))
print('conn:ping() ', '->', pformat(conn:ping()))
print('conn:thread_id() ', '->', pformat(conn:thread_id()))
print('conn:stat() ', '->', pformat(conn:stat()))
print('conn:server_info() ', '->', pformat(conn:server_info()))
print('conn:host_info() ', '->', pformat(conn:host_info()))
print('conn:server_version() ', '->', pformat(conn:server_version()))
print('conn:proto_info() ', '->', pformat(conn:proto_info()))
print('conn:ssl_cipher() ', '->', pformat(conn:ssl_cipher()))
--transactions
print('conn:commit() ', conn:commit())
print('conn:rollback() ', conn:rollback())
print('conn:set_autocommit() ', conn:set_autocommit(true))
--test types and values
local test_fields = {
'fdecimal',
'fnumeric',
'ftinyint',
'futinyint',
'fsmallint',
'fusmallint',
'finteger',
'fuinteger',
'ffloat',
'fdouble',
'fdouble2',
'fdouble3',
'fdouble4',
'freal',
'fbigint',
'fubigint',
'fmediumint',
'fumediumint',
'fdate',
'ftime',
'ftime2',
'fdatetime',
'fdatetime2',
'ftimestamp',
'ftimestamp2',
'fyear',
'fbit2',
'fbit22',
'fbit64',
'fenum',
'fset',
'ftinyblob',
'fmediumblob',
'flongblob',
'ftext',
'fblob',
'fvarchar',
'fvarbinary',
'fchar',
'fbinary',
'fnull',
}
local field_indices = glue.index(test_fields)
local field_types = {
fdecimal = 'decimal(8,2)',
fnumeric = 'numeric(6,4)',
ftinyint = 'tinyint',
futinyint = 'tinyint unsigned',
fsmallint = 'smallint',
fusmallint = 'smallint unsigned',
finteger = 'int',
fuinteger = 'int unsigned',
ffloat = 'float',
fdouble = 'double',
fdouble2 = 'double',
fdouble3 = 'double',
fdouble4 = 'double',
freal = 'real',
fbigint = 'bigint',
fubigint = 'bigint unsigned',
fmediumint = 'mediumint',
fumediumint = 'mediumint unsigned',
fdate = 'date',
ftime = 'time(0)',
ftime2 = 'time(6)',
fdatetime = 'datetime(0)',
fdatetime2 = 'datetime(6)',
ftimestamp = 'timestamp(0) null',
ftimestamp2 = 'timestamp(6) null',
fyear = 'year',
fbit2 = 'bit(2)',
fbit22 = 'bit(22)',
fbit64 = 'bit(64)',
fenum = "enum('yes', 'no')",
fset = "set('e1', 'e2', 'e3')",
ftinyblob = 'tinyblob',
fmediumblob = 'mediumblob',
flongblob = 'longblob',
ftext = 'text',
fblob = 'blob',
fvarchar = 'varchar(200)',
fvarbinary = 'varbinary(200)',
fchar = 'char(200)',
fbinary = 'binary(20)',
fnull = 'int'
}
local test_values = {
fdecimal = '42.12',
fnumeric = '42.1234',
ftinyint = 42,
futinyint = 255,
fsmallint = 42,
fusmallint = 65535,
finteger = 42,
fuinteger = 2^32-1,
ffloat = tonumber(ffi.cast('float', 42.33)),
fdouble = 42.33,
fdouble2 = nil, --null from mysql 5.1.24+
fdouble3 = nil, --null from mysql 5.1.24+
fdouble4 = nil, --null from mysql 5.1.24+
freal = 42.33,
fbigint = 420LL,
fubigint = 0ULL - 1,
fmediumint = 440,
fumediumint = 2^24-1,
fdate = {year = 2013, month = 10, day = 05},
ftime = {hour = 21, min = 30, sec = 15, frac = 0},
ftime2 = {hour = 21, min = 30, sec = 16, frac = 123456},
fdatetime = {year = 2013, month = 10, day = 05, hour = 21, min = 30, sec = 17, frac = 0},
fdatetime2 = {year = 2013, month = 10, day = 05, hour = 21, min = 30, sec = 18, frac = 123456},
ftimestamp = {year = 2013, month = 10, day = 05, hour = 21, min = 30, sec = 19, frac = 0},
ftimestamp2 = {year = 2013, month = 10, day = 05, hour = 21, min = 30, sec = 20, frac = 123456},
fyear = 2013,
fbit2 = 2,
fbit22 = 2 * 2^8 + 2,
fbit64 = 2ULL * 2^(64-8) + 2 * 2^8 + 2,
fenum = 'yes',
fset = 'e2,e3',
ftinyblob = 'tiny tiny blob',
fmediumblob = 'medium blob',
flongblob = 'loong blob',
ftext = 'just a text',
fblob = 'bloob',
fvarchar = 'just a varchar',
fvarbinary = 'a varbinary',
fchar = 'a char',
fbinary = 'a binary char\0\0\0\0\0\0\0',
fnull = nil,
}
local set_values = {
fdecimal = "'42.12'",
fnumeric = "42.1234",
ftinyint = "'42'",
futinyint = "'255'",
fsmallint = "42",
fusmallint = "65535",
finteger = "'42'",
fuinteger = tostring(2^32-1),
ffloat = "42.33",
fdouble = "'42.33'",
fdouble2 = "0/0",
fdouble3 = "1/0",
fdouble4 = "-1/0",
freal = "42.33",
fbigint = "'420'",
fubigint = tostring(0ULL-1):sub(1,-4), --remove 'ULL'
fmediumint = "440",
fumediumint = tostring(2^32-1),
fdate = "'2013-10-05'",
ftime = "'21:30:15'",
ftime2 = "'21:30:16.123456'",
fdatetime = "'2013-10-05 21:30:17'",
fdatetime2 = "'2013-10-05 21:30:18.123456'",
ftimestamp = "'2013-10-05 21:30:19'",
ftimestamp2 = "'2013-10-05 21:30:20.123456'",
fyear = "2013",
fbit2 = "b'10'",
fbit22 = "b'1000000010'",
fbit64 = "b'0000001000000000000000000000000000000000000000000000001000000010'",
fenum = "'yes'",
fset = "('e3,e2')",
ftinyblob = "'tiny tiny blob'",
fmediumblob = "'medium blob'",
flongblob = "'loong blob'",
ftext = "'just a text'",
fblob = "'bloob'",
fvarchar = "'just a varchar'",
fvarbinary = "'a varbinary'",
fchar = "'a char'",
fbinary = "'a binary char'",
fnull = "null"
}
local bind_types = {
fdecimal = 'decimal(20)', --TODO: truncation
fnumeric = 'numeric(20)',
ftinyint = 'tinyint',
futinyint = 'tinyint unsigned',
fsmallint = 'smallint',
fusmallint = 'smallint unsigned',
finteger = 'int',
fuinteger = 'int unsigned',
ffloat = 'float',
fdouble = 'double',
fdouble2 = 'double',
fdouble3 = 'double',
fdouble4 = 'double',
freal = 'real',
fbigint = 'bigint',
fubigint = 'bigint unsigned',
fmediumint = 'mediumint',
fumediumint = 'mediumint unsigned',
fdate = 'date',
ftime = 'time',
ftime2 = 'time',
fdatetime = 'datetime',
fdatetime2 = 'datetime',
ftimestamp = 'timestamp',
ftimestamp2 = 'timestamp',
fyear = 'year',
fbit2 = 'bit(2)',
fbit22 = 'bit(22)',
fbit64 = 'bit(64)',
fenum = 'enum(200)',
fset = 'set(200)',
ftinyblob = 'tinyblob(200)',
fmediumblob = 'mediumblob(200)',
flongblob = 'longblob(200)',
ftext = 'text(200)',
fblob = 'blob(200)',
fvarchar = 'varchar(200)',
fvarbinary = 'varbinary(200)',
fchar = 'char(200)',
fbinary = 'binary(200)',
fnull = 'int',
}
--queries
local esc = "'escape me'"
print('conn:escape( ', pformat(esc), ')', '->', pformat(conn:escape(esc)))
local q1 = 'drop table if exists binding_test'
print('conn:query( ', pformat(q1), ')', conn:query(q1))
local field_defs = ''
for i,field in ipairs(test_fields) do
field_defs = field_defs .. field .. ' ' .. field_types[field] .. (i == #test_fields and '' or ', ')
end
local field_sets = ''
for i,field in ipairs(test_fields) do
field_sets = field_sets .. field .. ' = ' .. set_values[field] .. (i == #test_fields and '' or ', ')
end
conn:query([[
create table binding_test ( ]] .. field_defs .. [[ );
insert into binding_test set ]] .. field_sets .. [[ ;
insert into binding_test values ();
select * from binding_test;
]])
--query info
print('conn:field_count() ', '->', pformat(conn:field_count()))
print('conn:affected_rows() ', '->', pformat(conn:affected_rows()))
print('conn:insert_id() ', '->', conn:insert_id())
print('conn:errno() ', '->', pformat(conn:errno()))
print('conn:sqlstate() ', '->', pformat(conn:sqlstate()))
print('conn:warning_count() ', '->', pformat(conn:warning_count()))
print('conn:info() ', '->', pformat(conn:info()))
for i=1,3 do
print('conn:more_results() ', '->', pformat(conn:more_results())); assert(conn:more_results())
print('conn:next_result() ', '->', pformat(conn:next_result()))
end
assert(not conn:more_results())
--query results
local res = conn:store_result() --TODO: local res = conn:use_result()
print('conn:store_result() ', '->', res)
print('res:row_count() ', '->', pformat(res:row_count())); assert(res:row_count() == 2)
print('res:field_count() ', '->', pformat(res:field_count())); assert(res:field_count() == #test_fields)
print('res:eof() ', '->', pformat(res:eof())); assert(res:eof() == true)
print('res:fields() ', '->') print_fields(res:fields())
print('res:field_info(1) ', '->', pformat(res:field_info(1)))
--first row: fetch as array and test values
local row = assert(res:fetch'n')
print("res:fetch'n' ", '->', pformat(row))
for i,field in res:fields() do
assert_deepequal(row[i], test_values[field.name])
end
--first row again: fetch as assoc. array and test values
print('res:seek(1) ', '->', res:seek(1))
local row = assert(res:fetch'a')
print("res:fetch'a' ", '->', pformat(row))
for i,field in res:fields() do
assert_deepequal(row[field.name], test_values[field.name])
end
--first row again: fetch unpacked and test values
print('res:seek(1) ', '->', res:seek(1))
local function pack(_, ...)
local t = {}
for i=1,select('#', ...) do
t[i] = select(i, ...)
end
return t
end
local row = pack(res:fetch())
print("res:fetch() ", '-> packed: ', pformat(row))
for i,field in res:fields() do
assert_deepequal(row[i], test_values[field.name])
end
--first row again: print its values parsed and unparsed for comparison
res:seek(1)
local row = assert(res:fetch'n')
res:seek(1)
local row_s = assert(res:fetch'ns')
print()
print(fit('', 4, 'right') .. ' ' .. fit('field', 20) .. fit('unparsed', 40) .. ' ' .. 'parsed')
print(('-'):rep(4 + 2 + 20 + 40 + 40))
for i,field in res:fields() do
print(fit(tostring(i), 4, 'right') .. ' ' .. fit(field.name, 20) .. fit(pformat(row_s[i]), 40) .. ' ' .. pformat(row[i]))
end
print()
--second row: all nulls
local row = assert(res:fetch'n')
print("res:fetch'n' ", '->', pformat(row))
assert(#row == 0)
for i=1,res:field_count() do
assert(row[i] == nil)
end
assert(not res:fetch'n')
--all rows again: test iterator
res:seek(1)
local n = 0
for i,row in res:rows'nas' do
n = n + 1
assert(i == n)
end
print("for i,row in res:rows'nas' do <count-rows>", '->', n); assert(n == 2)
print('res:free() ', res:free())
--reflection
print('res:list_dbs() ', '->'); print_result(conn:list_dbs())
print('res:list_tables() ', '->'); print_result(conn:list_tables())
print('res:list_processes() ', '->'); print_result(conn:list_processes())
--prepared statements
local query = 'select '.. table.concat(test_fields, ', ')..' from binding_test'
local stmt = conn:prepare(query)
print('conn:prepare( ', pformat(query), ')', '->', stmt)
print('stmt:field_count() ', '->', pformat(stmt:field_count())); assert(stmt:field_count() == #test_fields)
--we can get the fields and their types before execution so we can create create our bind structures.
--max. length is not computed though, but length is, so we can use that.
print('stmt:fields() ', '->'); print_fields(stmt:fields())
--binding phase
local btypes = {}
for i,field in ipairs(test_fields) do
btypes[i] = bind_types[field]
end
local bind = stmt:bind_result(btypes)
print('stmt:bind_result( ', pformat(btypes), ')', '->', pformat(bind))
--execution and loading
print('stmt:exec() ', stmt:exec())
print('stmt:store_result() ', stmt:store_result())
--result info
print('stmt:row_count() ', '->', pformat(stmt:row_count()))
print('stmt:affected_rows() ', '->', pformat(stmt:affected_rows()))
print('stmt:insert_id() ', '->', pformat(stmt:insert_id()))
print('stmt:sqlstate() ', '->', pformat(stmt:sqlstate()))
--result data (different API since we don't get a result object)
print('stmt:fetch() ', stmt:fetch())
print('stmt:fields() ', '->'); print_fields(stmt:fields())
print('bind:is_truncated(1) ', '->', pformat(bind:is_truncated(1))); assert(bind:is_truncated(1) == false)
print('bind:is_null(1) ', '->', pformat(bind:is_null(1))); assert(bind:is_null(1) == false)
print('bind:get(1) ', '->', pformat(bind:get(1))); assert(bind:get(1) == test_values.fdecimal)
local i = field_indices.fdate
print('bind:get_date( ', i, ')', '->', bind:get_date(i)); assert_deepequal({bind:get_date(i)}, {2013, 10, 5})
local i = field_indices.ftime
print('bind:get_date( ', i, ')', '->', bind:get_date(i)); assert_deepequal({bind:get_date(i)}, {nil, nil, nil, 21, 30, 15, 0})
local i = field_indices.fdatetime
print('bind:get_date( ', '->', bind:get_date(i)); assert_deepequal({bind:get_date(i)}, {2013, 10, 5, 21, 30, 17, 0})
local i = field_indices.ftimestamp
print('bind:get_date( ', '->', bind:get_date(i)); assert_deepequal({bind:get_date(i)}, {2013, 10, 5, 21, 30, 19, 0})
local i = field_indices.ftimestamp2
print('bind:get_date( ', '->', bind:get_date(i)); assert_deepequal({bind:get_date(i)}, {2013, 10, 5, 21, 30, 20, 123456})
print('for i=1,bind.field_count do bind:get(i)', '->')
local function print_bind_buffer(bind)
print()
for i,field in ipairs(test_fields) do
local v = bind:get(i)
assert_deepequal(v, test_values[field])
assert(bind:is_truncated(i) == false)
assert(bind:is_null(i) == (test_values[field] == nil))
print(fit(tostring(i), 4, 'right') .. ' ' .. fit(field, 20) .. pformat(v))
end
print()
end
print_bind_buffer(bind)
print('stmt:free_result() ', stmt:free_result())
local next_result = stmt:next_result()
print('stmt:next_result() ', '->', pformat(next_result)); assert(next_result == false)
print('stmt:reset() ', stmt:reset())
print('stmt:close() ', stmt:close())
--prepared statements with parameters
for i,field in ipairs(test_fields) do
local query = 'select * from binding_test where '..field..' = ?'
local stmt = conn:prepare(query)
print('conn:prepare( ', pformat(query), ')')
local param_bind_def = {bind_types[field]}
local bind = stmt:bind_params(param_bind_def)
print('stmt:bind_params ', pformat(param_bind_def))
local function exec()
print('stmt:exec() ', stmt:exec())
print('stmt:store_result() ', stmt:store_result())
print('stmt:row_count() ', '->', stmt:row_count()); assert(stmt:row_count() == 1)
end
local v = test_values[field]
if v ~= nil then
print('bind:set( ', 1, pformat(v), ')'); bind:set(1, v); exec()
if field:find'date' or field:find'time' then
print('bind:set_date( ', 1, v.year, v.month, v.day, v.hour, v.min, v.sec, v.frac, ')')
bind:set_date(1, v.year, v.month, v.day, v.hour, v.min, v.sec, v.frac); exec()
end
end
print('stmt:close() ', stmt:close())
end
--prepared statements with auto-allocated result bind buffers.
local query = 'select * from binding_test'
local stmt = conn:prepare(query)
local bind = stmt:bind_result()
--pp(stmt:bind_result_types())
stmt:exec()
stmt:store_result()
stmt:fetch()
print_bind_buffer(bind)
stmt:close()
local q = 'drop table binding_test'
print('conn:query( ', pformat(q), ')', conn:query(q))
print('conn:commit() ', conn:commit())
print('conn:close() ', conn:close())