left join [MESBT].[dbo].[BK_goods] bg2 on sn2.goodsId=bg2.goodsId Left Join Test t On bg.goodsCode = t.itemno And isnull(bg2.goodsCode,'0000') = t.f_itemno Where t.itemno is null And t.f_itemno is null
1、首先在桌面上，点击“Management Studio”图标。2、然后在该界面中，点击左上角“新建查询”选项。3、之后在该界面中，输入left join多表查询语句。4、接着在该界面中，点击左上方“执行”按钮。5、然后在该界面中，显示的数据结果有重复。6、其次在该界面中，left join多表查询语句中加入distinct...
select * from a left join(select id from b group by id) as b on a.id=b.aid 拿出b表的一条数据关联 使A表与B表所显示的记录数为 1:1对应关系。 SELECT a.*, b.type FROM table1 a LEFT JOIN ( SELECT * FROM table2 GROUP BY sponsor_id ) AS b ON a.sponsor_id = b.sponsor_id ...
select t1.name as Name,t2.value as Value from #T1 t1 left outer join #T2 t2 on t1.id=t2.rootid 结果: 右外连接 select t1.name as Name,t2.value as Value from #T1 t1 right outer join #T2 t2 on t1.id=t2.rootid 结果: 全外连接 select t1.name as Name,t2.value as Value fr...
CREATETABLE#temp2 ([MID][int],[AID][int],[ADATE][nvarchar](20),[BID][int],[BDATE][...
1、Left Join(左联接) 以左表为中心,返回左表中符合条件的所有记录以及右表中联结字段相等的记录——当右表中无相应联接记录时,返回空值。 2、Inner Join(等值连接) 返回两个表中联结字段相等的行。 注意:如出现重复结果列,要从出现重复源头表的列,开始过滤!
首先,我们需要明确要实现的目标,即通过两次left join操作,将三个表连接起来。下面是整个流程的步骤: 二、具体步骤 步骤一:从第一个表left join到第二个表 SELECT*FROMtable1LEFTJOINtable2ONtable1.key=table2.key; 1. 2. 3. 4. SELECT *: 选择所有列 ...
LEFTJOIN(SELECTVipExamMailProjectId,VipExamMailStaffIDFROMVipExamMailRecordWHEREVipExamMailProjectId = 1 GROUPBYVipExamMailStaffID,VipExamMailProjectIdHAVINGCOUNT(1)>1) b ONa.BranchStaffID = b.VipExamMailStaffID --WHERE a.BranchStaffCountryID=1 ...
SELECT '1','1' UNION ALL SELECT '2','1' UNION ALL SELECT '3','2'CREATE TABLE #B表 (ID INT,CLASS CHAR(10))INSERT #B表 SELECT '1','1' UNION ALL SELECT '2','2' UNION ALL SELECT '4','4' UNION ALL SELECT '55','55' UNION ALL SELECT '66','66'CREATE TABLE ...
left join (select 生产批号,sum(领料数量) as 领料数量 from b group by 生产批号) bb on a.生产批号=b.生产批号 left join (select cc.生产批号,sum(d.完工数量) as 完工数量 from (select distinct 生产批号,rcid from c) cc,d where c.rcid=d.rcid group by c.生产批号 ) dd on...