http://netfork.spaces.live.com/blog/cns!CB0D48877FFBC3B5!251.entry 在SQL Server 中使用DELETE和UPDATE的INNER JOIN关键字与 Access 的常规写法不同。 Access中写为: delete from t1 inner join t2 on t1.id = t2.tid 而SQL Server中须写为: delete from t1from t1inner join t2 on t1.id = t2...
内连接(INNER JOIN) SELECT vend_name, prod_name, prod_price FROM vendors INNER JOIN products ON vendors.vend_id = products.vend_id; 1. 2. 3. 自连接 SELECT c1.cust_id, c1.cust_name, c1.cust_contact FROM customers c1, customers c2WHERE c1.cust_name = c2.cust_name AND c2.cust_c...
FROM Vendors INNER JOIN Products ON Vendors.vend_id = Products.vend_id; 1. 2. 3. 此语句中的SELECT与前面的SELECT语句相同,但FROM子句不同。 这里,两个表之间的关系是以INNER JOIN指定的部分FROM子句。 在使用这种语法时,联结条件用特定的ON子句而不是WHERE子句给出。传递给ON的实际条件与传递给WHERE的相...
SQL 複製 -- No need to mention target table more than once. DELETE spqh FROM Sales.SalesPersonQuotaHistory AS spqh INNER JOIN Sales.SalesPerson AS sp ON spqh.BusinessEntityID = sp.BusinessEntityID WHERE sp.SalesYTD > 2500000.00; E. 使用 TOP 限制刪除的資料列數目...
Delete Update 中使用JOIN (SQL,ACCESS整理) delete的写法 Access中写为: delete from t1 inner join t2 on t1.id = t2.tid 而SQL Server中须写为: delete from t1 from t1 inner join t2 on t1.id = t2.tid Update的写法 Access中: update t1 inner join t2 on t1.id = t2.tid set t1.name...
你要是只要删除ss表 中的数据直接用以下的方法就可以了delete ss from dbo.Login ssinner join Server gs on ss.ServerId=gs.ServerIdinner join Area ga on gs.AreaId=ga.AreaIdinner join Game g on ga.GameId=g.GameIDwhere g.GameId=55 and ss.LoginDateId=20010208 and gs.ServerId...
SQL Copier -- No need to mention target table more than once. DELETE spqh FROM Sales.SalesPersonQuotaHistory AS spqh INNER JOIN Sales.SalesPerson AS sp ON spqh.BusinessEntityID = sp.BusinessEntityID WHERE sp.SalesYTD > 2500000.00;
SELECT * FROM Employees; 在这个跨表更新操作中,我们首先指定了要更新的表Employees,然后设置了新的Salary值,这个值是通过将原始薪水与Departments表中相应SalaryIncreasePercentage相乘并除以 100 来计算的。我们使用INNER JOIN来连接Employees表(使用别名e)和Departments表(使用别名d),基于共同的DepartmentID字段。WHERE子...
SQL中使用update inner join和delete inner join 2009-05-21 18:14 −Update XXX set XXX where 这种写法大家肯定都知道,才发现update和delete居然支持inner join的update方式,太神奇了。分享段示例代码: update tb_User set pass='' from tb_User usr inner join tb_A... ...
-- SQL-2003 Standard subqueryDELETEFROMSales.SalesPersonQuotaHistoryWHEREBusinessEntityIDIN(SELECTBusinessEntityIDFROMSales.SalesPersonWHERESalesYTD >2500000.00); GO SQL -- Transact-SQL extensionDELETEFROMSales.SalesPersonQuotaHistoryFROMSales.SalesPersonQuotaHistoryASspqhINNERJOINSales.SalesPersonASspONspqh.Busines...