从基数10到基数26仅带字母，因此26将为aa

此存储的函数将单个int转换为base26：

DROP FUNCTION IF EXISTS `base10to26`;DELIMITER ;;CREATE FUNCTION `base10to26`(`theNumber` INT(11) UNSIGNED) RETURNS VARCHAr(20) READS SQL DATABEGIN    DECLARE colTxt VARCHAr(20);    DECLARE value  INT(11);    SET colTxt = '';    REPEAT        SET value  = theNumber % 26;        IF value = 0 THEN SET value = 26; END IF;        SET theNumber = (theNumber - value) / 26;        SET colTxt = CONCAt(CHAr(value+64), colTxt);    UNTIL theNumber = 0 END REPEAT;    RETURN colTxt;END;;DELIMITER ;