如何查詢mysql的表,mysql中連表查詢求和?
selectyfdj,sum(shu),sum(cb),sum(glcb),sum(fk)fromclienta
leftjoinsongbona.id=b.cid
leftjoinlaicona.id=c.cid
groupbyyfdj
上一篇行字查字典步驟
下一篇還有哪些辦公軟件值得一用
selectyfdj,sum(shu),sum(cb),sum(glcb),sum(fk)fromclienta
leftjoinsongbona.id=b.cid
leftjoinlaicona.id=c.cid
groupbyyfdj