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MySQL 8.0 Reference Manual  /  ...  /  mysql_set_server_option()

27.7.7.74 mysql_set_server_option()

int mysql_set_server_option(MYSQL *mysql, enum enum_mysql_set_option option)

Description

Enables or disables an option for the connection. option can have one of the following values.

Option Description
MYSQL_OPTION_MULTI_STATEMENTS_ON Enable multiple-statement support
MYSQL_OPTION_MULTI_STATEMENTS_OFF Disable multiple-statement support

If you enable multiple-statement support, you should retrieve results from calls to mysql_query() or mysql_real_query() by using a loop that calls mysql_next_result() to determine whether there are more results. For an example, see Section 27.7.19, “C API Multiple Statement Execution Support”.

Enabling multiple-statement support with MYSQL_OPTION_MULTI_STATEMENTS_ON does not have quite the same effect as enabling it by passing the CLIENT_MULTI_STATEMENTS flag to mysql_real_connect(): CLIENT_MULTI_STATEMENTS also enables CLIENT_MULTI_RESULTS. If you are using the CALL SQL statement in your programs, multiple-result support must be enabled; this means that MYSQL_OPTION_MULTI_STATEMENTS_ON by itself is insufficient to permit the use of CALL.

Return Values

Zero for success. Nonzero if an error occurred.

Errors

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