問題描述

SQLSTR是別名，在MySQL5.7以上版本能通過，在5.0上提示unknow column ‘SQLSTR’錯(cuò)誤，我不知道應(yīng)該怎么修改（因?yàn)榭蛻絷P(guān)系不能通過mysql版本）,請(qǐng)各位大神指點(diǎn)！

BEGIN DECLARE sTYPE VARCHAR(20); DROP TEMPORARY TABLE IF EXISTS temp_public_data; CREATE TEMPORARY TABLE temp_public_data SELECT DATE_FORMAT(FROM_UNIXTIME(n.inputtime),’%Y-%m-%d’) as days, DATE_FORMAT(FROM_UNIXTIME(n.inputtime),’%Y-%m’) as months, DATE_FORMAT(FROM_UNIXTIME(n.inputtime),’%Y’) as years, DATE_FORMAT(FROM_UNIXTIME(n.inputtime),’%u’) as weeks, count(n.id) as pubnum,n.username from v9_news as n WHERE DATE_FORMAT(FROM_UNIXTIME(n.inputtime),’%Y-%m-%d’) BETWEEN pDayBegin AND pDayEnd GROUP BY days,n.username; IF pType=1 THENSET sType = 'years'; ELSEIF pType=2 THENSET sType = 'months'; ELSEIF pType=3 THENSET sType = 'weeks'; ELSEIF pType=5 THENSET sType = 'days'; END IF;SET @EE = ''; SELECT @EE:= CONCAT(@EE,’,SUM(IF(username=’’,username,’’,pubnum,0)) AS ’’,username,’’’) AS **SQLSTR** FROM (SELECT DISTINCT username FROM temp_public_data) A ORDER BY **LENGTH(SQLSTR)** DESC LIMIT 0,1; SET @SQL = CONCAT(’SELECT IFNULL(’,sType,’,’TOTAL’) AS MONTH’); SET @SQL = CONCAT(@SQL,@EE); SET @SQL = CONCAT(@SQL,’,SUM(pubnum) as TOTAl ’); SET @SQL = CONCAT(@SQL,’ FROM temp_public_data’); SET @SQL = CONCAT(@SQL,’ GROUP BY ’,sType,’ WITH ROLLUP;’);#SELECT @SQL; PREPARE stmt FROM @SQL;EXECUTE stmt; DROP TEMPORARY TABLE IF EXISTS temp_public_data;END

問題解答

可以了，用SQLSTR后面into 一個(gè)變量，然后用這個(gè)變量來order就可以了，汗！