wpdb::print_error()
Method: Prints SQL/DB error.
Source: wp-includes/class-wpdb.php:1798
wpdb::show_errors()
Method: Enables showing of database errors.
Source: wp-includes/class-wpdb.php:1872
wpdb::hide_errors()
Method: Disables showing of database errors.
Source: wp-includes/class-wpdb.php:1889
wpdb::flush()
Method: Kills cached query results.
Source: wp-includes/class-wpdb.php:1918
wpdb::query()
Method: Performs a database query, using current database connection.
Source: wp-includes/class-wpdb.php:2203
wpdb::get_var()
Method: Retrieves one variable from the database.
Source: wp-includes/class-wpdb.php:2882
wpdb::get_row()
Method: Retrieves one row from the database.
Source: wp-includes/class-wpdb.php:2916
wpdb::get_col()
Method: Retrieves one column from the database.
Source: wp-includes/class-wpdb.php:2960
wpdb::get_results()
Method: Retrieves an entire SQL result set from the database (i.e., many rows).
Source: wp-includes/class-wpdb.php:2997
wpdb::get_col_info()
Method: Retrieves column metadata from the last query.
Source: wp-includes/class-wpdb.php:3739