left join on的简单三表关联
大家好 我是wasdzjh 很高兴你们能光临小弟的博客,小弟也希望能有更多的知识分享给大家。废话不多说了,开始。
left join on 大家可以去百度具体的定义,我也就不在这里多说什么了。直接上语句 代码。
三表:
part_id description specification product_code brand uom purchase vendor_id drawing_file lead_time batch
inv_qr_line表
trans_no line_no part_id quantity unit_price amount location_id remark spec_add unit create_time edit_time
shipper_line表
trans_no line_no part_id location_id quantity unit_price amount ship_to_id remark create_time
select part.part_id, part.description ,part.specification,inv_qr_line.create_time,inc_qr_line.quantity,
shippe_line.create_time,shipper_line.quantity from part left join inv_qr_line on part.part_id = inv_qr_line.part_id left join shipper_line on part.part_id = shipper_line.part_id最后传上图片让大家看看结果