For more information, see The Transaction Log (SQL Server). The Database Engine converts a partial update to a full update when the UPDATE statement causes either of these actions: Changes a key column of the partitioned view or table. Modifies more than one row and also updates the key ...
@version = SUBSTRING(@@VERSION, LEN('Microsoft SQL Server') + 2, 4) DECLARE @object_id INT SET @object_id = OBJECT_ID(@table_name) DECLARE @sql NVARCHAR(MAX) IF @version NOT IN ('2005', '2008') BEGIN RAISERROR('This script only supports SQL Server 2005 and 2008', 16, 1) RET...
SQL Server 和 Azure SQL 数据库的语法。 syntaxsql UPDATESTATISTICStable_or_indexed_view_name[ { {index_or_statistics__name} | ( {index_or_statistics_name} [ , ...n ] ) } ] [WITH[FULLSCAN[ [ , ]PERSIST_SAMPLE_PERCENT= {ON|OFF} ] |SAMPLEnumber {PERCENT|ROWS} [ [ , ]PERSIST_SA...
As we’ve noted, you can also update multiple columns at once with a single UPDATE statement combined with the appropriate clauses and operators for refining the query. In this example, the SQL UPDATE statement updates both the first and last name columns for a single customer: UPDATE ...
Scalar functions can be invoked where scalar expressions are used, which includes computed columns and CHECK constraint definitions. Scalar functions can also be executed by using the EXECUTE (Transact-SQL) statement. Scalar functions must be invoked by using at least the two-part name of the func...
EXPLAIN works with SELECT, DELETE, INSERT, REPLACE, and UPDATE statements.With the help of EXPLAIN, you can see where you should add indexes to tables so that the statement executes faster by using indexes to find rows. You can also use EXPLAIN to check whether the optimizer joins the table...
TABLES.UPDATE_TIME Those columns represent【ˌreprɪˈzent代表,表示;(在竞赛或体育赛事中)代表(国家或地区);(标志或符号)意味着,代表着,标志着;描绘,(形象地)表现,描写;代理(个人或团体);代表(个人或团体)出席;使】 dynamic table metadata; that is, information that changes as table contents change...
SQL Server Azure SQL 数据库 Azure SQL 托管实例 Microsoft Fabric SQL 数据库 指定要构建到某一表中的一组行值表达式。 Transact-SQL 表值构造函数允许在单个 DML 语句中指定多行数据。 表值构造函数可以指定为 INSERT VALUES 语句的 VALUES 子句...或指定为 MERGE 语句 USING 子句中的或 FROM 子句中的派生...
1 Applies to SQL Server 2016 (13.x) and prior versions, and nonclustered columnstore indexes. 2 Applies to SQL Server 2012 (11.x). Nonclustered columnstore indexes: Can't have more than 1,024 columns. Can't be created as a constraint-based index. It's possible to have unique constrain...
SQL Server Engine Query Optimizer All 2307893 Fixes incorrect results for queries that filter on ROW_NUMBER and involve nullable columns. SQL Server Engine Query Optimizer All 2313621 Fixes the following errors and access violations that are caused by an incorrect plan in the case of multiple occurr...