wpdb::check_connection()
Method: Checks that the connection to the database is still up. If not, try to reconnect.
Source: wp-includes/class-wpdb.php:2119
wpdb::get_var()
Method: Retrieves one variable from the database.
Source: wp-includes/class-wpdb.php:2882
wpdb::get_col_info()
Method: Retrieves column metadata from the last query.
Source: wp-includes/class-wpdb.php:3739
wpdb::select()
Method: Selects a database using the current or provided database connection.
Source: wp-includes/class-wpdb.php:1214
wpdb::query()
Method: Performs a database query, using current database connection.
Source: wp-includes/class-wpdb.php:2203
wpdb::get_row()
Method: Retrieves one row from the database.
Source: wp-includes/class-wpdb.php:2916
wpdb::timer_start()
Method: Starts the timer, for debugging purposes.
Source: wp-includes/class-wpdb.php:3764
wpdb::_weak_escape()
Method: Do not use, deprecated.
Source: wp-includes/class-wpdb.php:1276
query
Filter Hook: Filters the database query.
Source: wp-includes/class-wpdb.php:2219
wpdb::get_col()
Method: Retrieves one column from the database.
Source: wp-includes/class-wpdb.php:2960