MySQL Reference Manual for version 4.0.18.

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19.1.3.45 mysql_real_query()

int mysql_real_query(MYSQL *mysql, const char *query, unsigned long length)

Description

Executes the SQL query pointed to by query, which should be a string length bytes long. The query must consist of a single SQL statement. You should not add a terminating semicolon (`;') or \g to the statement.

You must use mysql_real_query() rather than mysql_query() for queries that contain binary data, because binary data may contain the `\0' character. In addition, mysql_real_query() is faster than mysql_query() because it does not call strlen() on the query string.

If you want to know if the query should return a result set or not, you can use mysql_field_count() to check for this. See section mysql_field_count().

Return Values

Zero if the query was successful. Non-zero if an error occurred.

Errors

CR_COMMANDS_OUT_OF_SYNC
Commands were executed in an improper order.
CR_SERVER_GONE_ERROR
The MySQL server has gone away.
CR_SERVER_LOST
The connection to the server was lost during the query.
CR_UNKNOWN_ERROR
An unknown error occurred.



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