newznab-tmux/resources/db/patches/mysql/0111~collections.sql

DROP PROCEDURE IF EXISTS update_collections;

DELIMITER $$
CREATE PROCEDURE update_collections()
  LANGUAGE SQL DETERMINISTIC CONTAINS SQL READS SQL DATA COMMENT 'Adds column definition "noise" for collections% tables'
  BEGIN
    DECLARE done INT DEFAULT 0;
    DECLARE tname VARCHAR(255) DEFAULT '';
    DECLARE cur1 CURSOR FOR SELECT TABLE_NAME
                          FROM information_schema.TABLES
                          WHERE
                            TABLE_SCHEMA = (SELECT DATABASE()) AND TABLE_NAME LIKE 'collections%'
                          ORDER BY TABLE_NAME;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
    OPEN cur1;
    alter_loop: LOOP FETCH cur1
    INTO tname;
      IF done
      THEN LEAVE alter_loop; END IF;
      SET @SQL := CONCAT("ALTER IGNORE TABLE ", tname,
                       " ADD noise CHAR(32) NOT NULL DEFAULT '' COMMENT 'FK to collections table' AFTER releaseid");
      PREPARE _stmt FROM @SQL;
      EXECUTE _stmt;
      DEALLOCATE PREPARE _stmt;
    END LOOP;
    CLOSE cur1;
END $$
DELIMITER ;

CALL update_collections;
DROP PROCEDURE IF EXISTS update_collections;