The Ultimate Guide to High Availability with MariaDB

MariaDB Connector/C Data structures

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This chapter describes the public data structures used by MariaDB Connector/C

MYSQL

The MYSQL structure represents one database connection and is used by most of MariaDB Connector/C's API functions. The MYSQL structure needs to be allocated and initialized by mysql_init() API function.

The MYSQL structure should be considered as opaque, copying or changing values of it's members might end up in unexpected results, errors or program crashes.

MYSQL_RES

The MYSQL_RES structure represents a result set which contains data and meta data information. It will be returned by mysql_use_result(), mysql_store_result() and mysql_stmt_result_metadata() API functions and needs to be released by mysql_free_result().

The MYSQL_RES structure should be considered as opaque, copying or changing values of it's members might end up in unexpected results, errors or program crashes.

MYSQL_STMT

The MYSQL_STMT structure represents a prepared statement handle and is used by MariaDB Connector/C's prepared statemnt API functions. The MYSQL_STMT structure needs to be allocated and initialized by mysql_stmt_init() API function.

The MYSQL_STMT structure should be considered as opaque, copying or changing values of it's members might end up in unexpected results, errors or program crashes.

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