Applies to: SQL Server 2008 R2 (10.50.x) Service Pack 1 and later versions Specifies that the query optimizer uses only an index scan operation as the access path to the referenced table or view. The FORCESCAN
Applies to: SQL Server 2008 R2 (10.50.x) Service Pack 1 and later versions Specifies that the query optimizer uses only an index scan operation as the access path to the referenced table or view. TheFORCESCANhint can be useful for queries in which the optimizer underestimates the number of...
Applies to: SQL Server 2008 R2 (10.50.x) Service Pack 1 and later versions Specifies that the query optimizer uses only an index scan operation as the access path to the referenced table or view. The FORCESCAN hint can be useful for queries in which the optimizer underestimates the number ...
Although the NOLOCK table hint, similar to all other table hints, can be used without using the WITH keyword, Microsoft announced that omitting the WITH keyword is a deprecated feature and will be removed from future Microsoft SQL Server versions. With that said, it is better to include the ...
and without the hint and compare results. Because SQL Server query optimizer usually proposes the best execution plan, you should test the query with table hint and use this hint only when it provides the best result. If the table hint provides the better execution plan not stable, avoid usin...
SQL Server does not allow for more than one table hint from each of the following groups for each table in the FROM clause: Granularity hints: PAGLOCK, NOLOCK, ROWLOCK, TABLOCK, or TABLOCKX. Isolation level hints: HOLDLOCK, NOLOCK, READCOMMITTED, REPEATABLEREAD, SERIALIZABLE. ...
{SIMPLE|FORCED} |QUERYTRACEON<integer_value>|RECOMPILE|ROBUSTPLAN|USEHINT('hint_name'[ , ...n ] ) |USEPLANN'<xml_plan>'|TABLEHINT(<exposed_object_name>[ ,<table_hint>[ [ , ] ...n ] ] ) |FORTIMESTAMPASOF'<point_in_time>'}<table_hint>::={NOEXPAND[ ,INDEX(<index_...
数据库 SQL Hint 的一般有两种格式：以/*+开头的一种特殊的 SQL 注释（比如 Oracle、Mysql）和 SQL 关键字（比如 SQL Server），业界比较多的设计是前面这扬中，也就是 SQL 注释。由于数据库 SQL Hint 是 SQL 注释，这不会破坏 SQL 标准和兼容性，在 Oracle、Mysql 中，SQL Hint 必须出现在 Select、Insert...
DropServerAuditStatement DropServerRoleStatement DropServiceStatement DropSignatureStatement DropStatisticsStatement Dropsymmetrickeystatement DropSynonymStatement DropTableStatement Droptriggerstatement DropTypeStatement Dropunownedobjectstatement DropUserStatement DropViewStatement DropWorkloadClassifierStatement DropWorkload...
TABLE HINT ( exposed_object_name [ , <table_hint> [ , ] ...n ] ] 将指定的表提示应用于与 exposed_object_name对应的表或视图。 我们建议仅在计划指南的上下文中将表提示用作查询提示。 exposed_object_name 可以是以下引用之一: 当别名用于查询的 FROM 子句中的表或视图时, exposed_object_name 是...