sql 语句不执行

delete from (select * from sys_barcode_1d_y union all select * from sys_barcode_1d_y_bak union all select * from FG_hi_cust_In where hi_no like 'ESC%')a where packageno='xxx'

回复讨论(解决方案)

delete from (select * from sys_barcode_1d_y union all select * from sys_barcode_1d_y_bak union all select * from FG_hi_cust_In where hi_no like 'ESC%') a where a.packageno='xxx'?

delete from (select * from sys_barcode_1d_y union all select * from sys_barcode_1d_y_bak union all select * from FG_hi_cust_In where hi_no like 'ESC%')a where a.packageno='xxx'

delete from (select * from sys_barcode_1d_y union all select * from sys_barcode_1d_y_bak union all select * from FG_hi_cust_In where hi_no like 'ESC%') a where a.packageno='xxx'?

感谢回答。但是是个语法错误，delete 不支持 union 表的删除，只能单表删除。