mysql过程CONCAT错误

Question

我想将数据从当前月份的另一个表复制到表中

这个SQL没问题
SELECT * FROM aqi_hour where DATE_FORMAT( date, '%Y%m' ) = DATE_FORMAT( CURDATE( ) ,'%Y%m' )

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但这不行，执行CALL porcedureName（） create procedure porcedureName () begin SET @sqlstr = CONCAT(' CREATE TABLE aqi_hour_',DATE_FORMAT(now(),'%Y%m') ,' SELECT * FROM aqi_hour where ', DATE_FORMAT( date, '%Y%m' ) ,'=', DATE_FORMAT( CURDATE( ) , '%Y%m' )); PREPARE stmt1 FROM @sqlstr ; EXECUTE stmt1 ; end create procedure porcedureName () begin SET @sqlstr = CONCAT(' CREATE TABLE aqi_hour_',DATE_FORMAT(now(),'%Y%m') ,' SELECT * FROM aqi_hour where ', DATE_FORMAT( date, '%Y%m' ) ,'=', DATE_FORMAT( CURDATE( ) , '%Y%m' )); PREPARE stmt1 FROM @sqlstr ; EXECUTE stmt1 ; end

错误消息：[Err] 1054-“字段列表”中的未知列“日期”

谢谢！

Answer 1

尝试：

SET @`sqlstr` := CONCAT('CREATE TABLE aqi_hour_', DATE_FORMAT(NOW(), '%Y%m'),
                        ' SELECT *
                          FROM aqi_hour
                          WHERE DATE_FORMAT(date, \'%Y%m\') =
                                DATE_FORMAT(CURDATE() , \'%Y%m\')
                        ');