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function is not described

_wp_mysql_week() WP 3.0.0

Return a MySQL expression for selecting the week number based on the start_of_week option.

No Hooks.

Return

String. SQL clause.

Usage

_wp_mysql_week( $column );
$column(string) (required)
Database column.

Code of wp mysql week: wp-includes/functions.php VER 5.1.1

<?php
function _wp_mysql_week( $column ) {
	switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) {
		case 1:
			return "WEEK( $column, 1 )";
		case 2:
		case 3:
		case 4:
		case 5:
		case 6:
			return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )";
		case 0:
		default:
			return "WEEK( $column, 0 )";
	}
}