)ASPGROUPBYid 第三种解决方法(使用VALUES): selectid, (SELECTmax(n)FROM(VALUES(col1),(col3),(col3) )ast(n) )FROM@t 参考文章:http://beyondrelational.com/modules/2/blogs/70/posts/10905/interesting-enhancements-to-the-values-clause-in-sql-server-2008.aspx...
value constructor allows multiple rows of data to be specified in a single DML statement. The table value constructor can be specified either as the VALUES clause of an INSERT ... VALUES statement, or as a derived table in either the USING clause of the MERGE statement or the FROM clause....
(4)) +'Sales'+/* Build a VALUES clause. */' VALUES (@InsOrderID, @InsCustID, @InsOrdDate,'+' @InsOrdMonth, @InsDelDate)';/* Set the value to use for the order month because functions are not allowed in the sp_executesql parameter list. */SET@OrderMonth =DATEPART(mm, @Prm...
SELECT Name FROM Production.UnitMeasure WHERE Name = N'Ounces'; GO INSERT INTO Production.UnitMeasure (UnitMeasureCode, Name, ModifiedDate) VALUES ('OC', 'Ounces', GETDATE()); 生成如下错误消息: 输出 复制 Server: Msg 2601, Level 14, State 1, Line 1 Cannot insert duplicate key row in...
produces the data>)AS<alias for the source query>UNPIVOT(<new output column created for values in result of the source query>FORIN(<first pivoted column>,<second pivoted column>, ...<last pivoted column>) ) [<optional ORDER BY clause>] [ ; ] 備註 UNPIVOT子句中的資料行識別碼會依照目錄...
specifying theINCLUDE_NULL_VALUESoption with theFOR JSONclause. If you don't specify this option, the output does not include JSON properties forNULLvalues in the query results. For more info and examples, seeInclude Null Values in JSON Output with the INCLUDE_NULL_VALUES Option (SQL Server)...
SQL Server 和 Azure SQL Database 中有擴充事件的系統檢視表。 了解如何以不同的檢視方塊來表示事件工作階段資訊。
(4) ) + 'Sales' + /* Build a VALUES clause. */ ' VALUES (@InsOrderID, @InsCustID, @InsOrdDate,' + ' @InsOrdMonth, @InsDelDate)' /* Set the value to use for the order month because functions are not allowed in the sp_executesql parameter list. */ SET @OrderMonth = ...
insert t2(UserID,NickName) values(1,'郭红俊') insert t2(UserID,NickName) values(2,'蝈蝈俊') go BEGIN TRANSACTION update t2 set NickName = '蝈蝈俊.net' where UserID = 2 请在查询窗口二中执行如下脚本: select * from t2 WITH(NOLOCK) where UserID = 2 ...
<OUTPUT_Clause> 在UPDATE 操作中,返回更新后的数据或基于更新后的数据的表达式。 任何面向远程表或视图的 DML 语句都不支持 OUTPUT 子句。 有关该子句的参数和行为的详细信息,请参阅 OUTPUT 子句 (Transact-SQL)。 FROM 指定将表、视图或派生表源用于为更新操作提供条件。 有关详细信息,请参阅 FROM (Transact...