从SQL Server 2017 (14.x) 开始,本机编译 T-SQL 模块已支持 CASE 语句。 SELECT 子句: 列名和别名(使用 AS 或 = 语法)。 标量子查询 适用于: SQL Server 2016 (13.x)。从 SQL Server 2016 (13.x) 开始,本机编译模块已支持标量子查询。 TOP* SELECT DISTINC...
'WHEN MATCHED' cannot appear more than once in a 'UPDATE' clause of a MERGE statement. "EXECUTE AT" with Dynamic Linked Server Name "explicit value must be specified for identity column in table" error in SQL 2000 "FROM clause have the same exposed names. Use correlation names to distingui...
AI代码解释 --排名可能间断(同值同排名)RANK()OVER([<partition_by_clause>]<order_by_clause>)--排名中没有任何间断 (同值同排名)DENSE_RANK()OVER([<partition_by_clause>]<order_by_clause>)--将有序分区中的行分发到指定数目(integer_expression)的组中。NTILE(integer_expression)OVER([<partition_by...
OPENXML <openxml_clause> 適用於:SQL Server 和 SQL Database。 透過XML 文件提供資料列集的檢視。 如需詳細資訊,請參閱 OPENXML (Transact-SQL)。 derived_table 從資料庫中擷取資料列的子查詢。 derived_table可用來作為外部查詢的輸入。 derived_table 可以使用 Transact-SQL 資料表值建構函式功能來指定多個...
TheSET HADRclause of theALTER DATABASEstatement Backup Azure SQL Managed Instance has automatic backups, so users can create full databaseCOPY_ONLYbackups. Differential, log, and file snapshot backups aren't supported. With a SQL Managed Instance, you can back up an instance database only ...
For more information about supported built-in functions, seeSupported Features for Natively Compiled T-SQL Modules, orNatively Compiled Stored Procedures. Feature CASE Applies to: SQL Server 2014 (12.x) and SQL Server starting SQL Server 2016 (13.x)CASE expressions are not supported in queries ...
Another T-SQL enhancement in Yukon allows you to return output from Data Manipulation Language (DML) statements other than SELECT (INSERT, UPDATE, DELETE). A new OUTPUT clause allows you to request that the old/new images of the columns be returned by referring to the INSERTED and DELETED ta...
报错信息如下:[Code: 1093, SQL State: HY000] You can’t specify target table ‘bd_bankaccbas’ for update in FROM clause 译文:不能在FROM子句中指定目标表‘bd_bankaccbas’进行更新。 有问题的SQL语句如下,它在oracle数据库的语法是支持的,但是mysql就不支持直接这么写:from和update都是同一张表。
Subclause 11.26, "<drop table constraint definition>": <drop table constraint definition> ::= DROP CONSTRAINT <constraint name> <drop behavior> ... Conformance Rules Without Feature F381, "Extended schema manipulation", conforming SQL language shall not contain a <drop table constraint defi...
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