sql删除列
表中有四列 如果列a4为空,我想删除 那我为什么要写代码呢sql删除列,sql,sql-delete,Sql,Sql Delete,表中有四列 如果列a4为空,我想删除 那我为什么要写代码呢 delete MAX(ID) as a1,a2,a3,a4 FROM dbo.T07StokDurum where a4 is null GROUP BY DesenKodu,Ebat HAVING COUNT(*) > 1 您的删除语法不正确。看 如果要删除A4列为空的整行,只需: DELETE FROM dbo.T07StokDurum where a4 is null …可以。不需要您编写的其余代码。除非您正在尝试执
delete MAX(ID) as a1,a2,a3,a4
FROM dbo.T07StokDurum where a4 is null
GROUP BY DesenKodu,Ebat
HAVING COUNT(*) > 1
您的删除语法不正确。看
如果要删除A4列为空的整行,只需:
DELETE FROM dbo.T07StokDurum where a4 is null
…可以。不需要您编写的其余代码。除非您正在尝试执行其他未指定的操作。这里的大多数人都想要格式化的文本,而不是图像(或图像链接)。请查看,然后。只是为了澄清一下。是否只希望删除a4为空且存在具有相同(a1、a2、a3)但具有a4值的记录?
DELETE FROM dbo.T07StokDurum where a4 is null