用惯了delete语句是delete from tablename where .... 今天要强制使用某一个index,查了查sql server也可以像ORACLE一样用hint,在select语句中是 select * from tablename with(index(indexname)) where... 可在delete中用 delete from tablename with(index(i
Learn more about the Microsoft.SqlServer.Management.SqlParser.SqlCodeDom.SqlIndexHint.IsIndexHint in the Microsoft.SqlServer.Management.SqlParser.SqlCodeDom namespace.
ON SOD.orderid =SO.orderidOPTION (TABLE HINT(SO,INDEX(idx_nc_custid)),TABLE HINT(SOD, INDEX(PK_OrderDetails))) GO 上述不推荐使用,除非你明确这样做比默认使用最优执行查询计划更好。 Columnstore Index 列存储索引出现在SQL Server 2012+上,我们本节简单说说这个内容,对于大数据方面合理使用列存储索引能...
列ストア インデックスを作成するには、SQL Server 2012 (11.x) と SQL Server 2014 (12.x) の場合にのみ、非クラスター化インデックスを削除する必要があります。 SQL コピー DROP INDEX dbo.SimpleTable.nc1_simple; DROP INDEX dbo.SimpleTable.nc2_simple; --Convert the rowstore table ...
An application, stored procedure, view, or function may be using an index hint(s). The definitions for stored procedures, views, or functions are easily searched, but you may not have access to every app’s source code, especially if it’s a vendor application. ...
SQL> CREATE BITMAP INDEX bitmap_t_xifenfei on t_xifenfei(object_name); Index created. SQL> BEGIN 2 dbms_stats.gather_table_stats(USER,'T_XIFENFEI',cascade => true); 3 END; 4 / PL/SQL procedure successfully completed. 无index hint ...
SQL Server Delete 'WITH INDEX' SQL queryWITH(INDEX(PK_Table1))is an index hint; i.e. tells...
721203 bytes sent via SQL*Net to client 36927 bytes received via SQL*Net from client 3324 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 49838 rows processed 从上面的执行计划中可知,此时走了全表扫描. 由于我们需要查询的列为object_id,因此理论上只需要读取索引就应该可以返回...
To resolve error 10637, remove the TABLOCK hint from your transaction, or unpause the index operation and wait for it to complete before attempting your transaction again. Online default options You can set online and resumable index operations as the default options at the database level by set...
<xsd_type_or_node_hint>] [SINGLETON] <xsd_type_or_node_hint> ::= [<xsd_type>] [MAXLENGTH(x)] | node() <sql_values_node_path_item> ::= <node_path> AS SQL <sql_type> [SINGLETON] <node_path> ::= character_string_literal <xsd_type> ::= character_string_literal <sql_type>...