DELETE FROM target_table WHERE... 基于联接的DELETE 基于联接的DELETE操作是非标准的SQL。 示例如下: 代码语言:txt AI代码解释 DELETE FROM Sales.SalesPersonQuotaHistory FROM Sales.SalesPersonQuotaHistory AS spqh INNER JOIN Sales.SalesPerson AS sp ON spqh.BusinessEntityID = sp.BusinessEntityID WHERE sp.S...
--UPDATE中INNER JOIN操作 UPDATEASETfield='xxx'FROMtable1 AINNERJOINtable2 BONA.id=B.fkidWHERE.. --DELETE中INNER JOIN操作 DELETEFROMAFROMtable1 AINNERJOINtable2 BONA.id=B.fkidWHERE.. 作者:Mr__BRIGHT 来源:晴朗笔记http://ronli.cnblogs.com...
基于联接的DELETE操作是非标准的SQL。 示例如下: DELETEFROMSales.SalesPersonQuotaHistoryFROMSales.SalesPersonQuotaHistoryASspqhINNERJOINSales.SalesPersonASspONspqh.BusinessEntityID=sp.BusinessEntityIDWHEREsp.SalesYTD>2500000.00; 上述语句换一种写法,如下: DELETEspqhFROMSales.SalesPersonQuotaHistoryASspqhINNERJOINSal...
BEGINTRANSACTIONSELECTCOUNT(*)FROMHumanResources.EmployeeWITH(TABLOCK, HOLDLOCK); C. 使用 SQL-92 CROSS JOIN 语法 下面的示例返回 AdventureWorks2022 数据库中Employee和Department这两个表的叉积。 包含所返回的BusinessEntityID行和所有Department名称行的所有可能组合的列表。
DELETE UPDATE 和 DELETE 语句支持 WHERE。 控制流语言 支持以下控制流语言构造。 IF...ELSE (Transact-SQL) WHILE (Transact-SQL) RETURN (Transact-SQL) DECLARE @local_variable (Transact-SQL)可以使用所有内存中 OLTP 支持的数据类型以及内存优化表类型。 可将变量声明...
定义CTE需要跟着一个INSERT, UPDATE, DELETE, 或者SELECT的语句来引用CTE。假如CTE是一个批处理的一部分,那么语句之前用一个With开始然后以分号结束。当你定义了一个多重CTE,即一个CTE引用另一个CTE则需要被引用的CTE定义在引用的CTE之前。听起来可能有点混乱,那我们闲话少说看实例来说明吧。
BEGINTRANSACTIONSELECTCOUNT(*)FROMHumanResources.EmployeeWITH(TABLOCK, HOLDLOCK); C. 使用 SQL-92 CROSS JOIN 语法 下面的示例返回 AdventureWorks2022 数据库中Employee和Department这两个表的叉积。 包含所返回的BusinessEntityID行和所有Department名称行的所有可能组合的列表。
Feature DELETE with FROM clause The FROM clause is not supported for DELETE statements with a table source in natively compiled stored procedures. DELETE with the FROM clause is supported when it is used to indicate the table to delete from. Feature UPDATE with FROM clause The FROM clause is ...
Feature DELETE with FROM clause The FROM clause is not supported for DELETE statements with a table source in natively compiled stored procedures. DELETE with the FROM clause is supported when it is used to indicate the table to delete from. Feature UPDATE with FROM clause The FROM clause is ...
DELETE UPDATE SELECTSELECT 陳述式通常必須使用 FROM 子句。 例外狀況如下:未列出任何資料表資料行,且唯一列出的項目是常值、變數或算術運算式時。本文也會說明下列可用於 FROM 子句的關鍵字:JOIN APPLY PIVOTTransact-SQL 語法慣例語法SQL Server 和 Azure SQL Database 的語法:...