mirror of
https://github.com/VCMP-SqMod/SqMod.git
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83 lines
1.9 KiB
Groff
83 lines
1.9 KiB
Groff
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.\" Automatically generated by Pandoc 2.5
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.\"
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.TH "mysql_autocommit" "3" "" "Version 3.2.2" "MariaDB Connector/C"
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.hy
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.SS Name
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.PP
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mysql_autocommit \- Toggles autocommit mode
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.SS Synopsis
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.IP
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.nf
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\f[C]
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#include <mysql.h>
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my_bool mysql_autocommit(MYSQL * mysql, my_bool auto_mode);
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\f[R]
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.fi
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.SS Description
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.PP
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Toggles autocommit mode on or off for the current database connection.
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Autocommit mode will be set if mode=1 or unset if mode=0.
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.SS Parameters:
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.IP \[bu] 2
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\f[C]mysql\f[R] is a connection identifier, which was previously
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allocated by \f[B]mysql_init(3)\f[R] and connected by
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\f[B]mysql_real_connect(3)\f[R].
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.IP \[bu] 2
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\f[C]auto_mode\f[R] \- whether to turn autocommit on or not.
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.SS Notes
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.IP \[bu] 2
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Autocommit mode only affects operations on transactional table types.
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To determine the current state of autocommit mode use the SQL command
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\f[C]SELECT \[at]\[at]autocommit\f[R] or check the server status (see
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example below).
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.IP \[bu] 2
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Be aware: the [mysql_rollback()}(mysql_rollback() function will not work
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if autocommit mode is switched on.
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.SS Examples
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.SS SQL
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.IP
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.nf
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\f[C]
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# Turn of autocmmit
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SET AUTOCOMMIT=0;
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# Retrieve autocommit
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SELECT \[at]\[at]autocommit;
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+\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
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| \[at]\[at]autocommit |
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+\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
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| 0 |
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+\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
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\f[R]
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.fi
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.SS MariaDB Connector/C
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.IP
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.nf
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\f[C]
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static int test_autocommit(MYSQL *mysql)
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{
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int rc;
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unsigned int server_status;
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/* Turn autocommit off */
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rc= mysql_autocommit(mysql, 0);
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if (rc)
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return rc; /* Error */
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/* If autocommit = 0 succeeded, the last OK packet updated the server status */
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rc= mariadb_get_infov(mysql, MARIADB_CONNECTION_SERVER_STATUS, &server_status);
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if (rc)
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return rc; /* Error */
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if (server_status & SERVER_STATUS_AUTOCOMMIT)
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{
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printf(\[dq]Error: autocommit is on\[rs]n\[dq]);
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return 1;
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}
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printf(\[dq]OK: autocommit is off\[rs]n\[dq]);
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return 0;
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}
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\f[R]
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.fi
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