ServerAuditStatement ServiceBrokerOption ServiceContract SessionOption SessionOptionKind SessionTimeoutPayloadOption SetClause SetCommand SetCommandStatement SetErrorLevelStatement SetFipsFlaggerCommand SetIdentityInsertStatement SetOffsets SetOffsetsStatement SetOnOffStatement SetOptions SetRowCountStatement Set...
OPENXML <openxml_clause> Applies to: SQL Server and SQL Database. Provides a rowset view over an XML document. For more information, see OPENXML (Transact-SQL). derived_table A subquery that retrieves rows from the database. derived_table is used as input to the outer query. derived_...
OPENXML <openxml_clause> Applies to: SQL Server and SQL Database. Provides a rowset view over an XML document. For more information, see OPENXML (Transact-SQL). derived_table A subquery that retrieves rows from the database. derived_table is used as input to the outer query. derived_...
Applies to: SQL Server (starting with SQL Server 2012 (11.x)). Prevents the query from using a nonclustered memory optimized columnstore index. If the query contains the query hint to avoid the use of the columnstore index, and an index hint to use a columnstore index, the hints are in...
简单的Transact-SQL查询只包括选择列表、FROM子句和WHERE子句。它们分别说明所查询列、查询的 表或视图、以及搜索条件等。 例如,下面的语句查询testtable表中姓名为“张三”的nickname字段和email字段。 代码:SELECT `nickname`,`email`FROM `testtable`WHERE `name`='张三' ...
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。
接下来的两个查询演示了如何使用索引视图,即使该视图未在子句中FROM指定。 SQL复制 --This query can use the indexed view even though the view is--not specified in the FROM clause.SELECTSUM(UnitPrice * OrderQty * (1.00- UnitPriceDiscount))ASRev, OrderDate, ProductIDFROMSales.SalesOrderDetailASodI...
请参阅此 SQL Server 错误代码列表(19000 年至 20999 年),查找有关 SQL Server 数据库引擎事件的错误消息的说明。
AS<alias for the source query>PIVOT(<aggregation function>(<column being aggregated>)FOR<column that contains the values that become column headers>IN(<first pivoted column>,<second pivoted column>, ...<last pivoted column>) )AS<alias for the pivot table>[<optional ORDER BY clause>] [ ;...
USE AdventureWorks2022; GO SELECT AVG(UnitPrice) AS [Average Price] FROM Sales.SalesOrderDetail; column_alias can be used in an ORDER BY clause. However, it cannot be used in a WHERE, GROUP BY, or HAVING clause. If the query expression is part of a DECLARE CURSOR statement, column_ali...