)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....
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...
(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...
-- Specify the remote data source in the FROM clause using a four-part name -- in the form linked_server.catalog.schema.object. INSERT INTO MyLinkServer.AdventureWorks2022.HumanResources.Department (Name, GroupName) VALUES (N'Public Relations', N'Executive General and Administration'); GO ...
VALUES clause. There is only one possible plan. Another example is a SELECT statement where all the columns are in a unique covering index and there is no other index that has that set of columns in it. These two examples are cases where SQL Server should simply generate the plan and ...
1. 打开SQL Server Management Studio,如图2所示。图2 SQL Server Management Studio2. 选择需要创建表的数据库,展开文件夹,选择“表”,单击鼠标右键,选择“新建表”,如图3所示。图3 选择“新建表”菜单项3. 输入列的名称、数据类型、长度、是否允许为空等属性,如图4所示。
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)...
INSERT INTO [Blogs] ([Name]) OUTPUT INSERTED.[Id] VALUES (@p0); The roundabout through the inserted0 TVP is probably because the OUTPUT clause won't work if there's a trigger defined, unless it's an OUTPUT INTO (??) (@AndriySvyryd it this right, any more context?). Unfortunately,...
(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 = ...