] table_or_view_name } <dml_table_source> ::= SELECT <select_list> FROM ( <dml_statement_with_output_clause> ) [AS] table_alias [ ( column_alias [ ,...n ] ) ] [ WHERE <search_condition> ] [ OPTION ( <query_hint>
table_name | table_name } [ ( column_name [ ,...n ] ) ] { VALUES ( { NULL | expression } ) | SELECT } [ OPTION ( <query_option> [ ,...n ] ) ] [;] 参数 WITH common_table_expression<> 指定在 INSERT 语句作用域内定义的临时命名结果集(也称为公用表表达式)。 结果集源自 ...
20、用sp_configure 'query governor cost limit'或者SET QUERY_GOVERNOR_COST_LIMIT来限制查询消耗的资源。当评估查询消耗的资源超出限制时,服务器自动取消查询,在查询之前就扼杀掉。SET LOCKTIME设置锁的时间 21、用select top 100 / 10 Percent 来限制用户返回的行数或者SET ROWCOUNT来限制操作的行 22、在SQL2000...
SQL Server Docs navigation tips Previous versions 2005-2014 Business continuity Database design Development Internals & architecture Installation Migrate & load data Manage, monitor, & tune Query data Reporting & Analytics Security Tools Tutorials SQL Server on Linux SQL on Azure Azure Arc Resources ...
In this query, an XML document is first assigned to a variable of xml type. Then, XML DML is used to insert a text node as the first child of the <Root> element. The text constructor is used to specify the text. SQL Copy USE AdventureWorks; GO DECLARE @myDoc XML; SET @myDoc ...
By default, all the data in the data file is sent to the server as a single transaction, and the number of rows in the batch is unknown to the query optimizer. If you specify ROWS_PER_BATCH (with a value > 0) the server uses this value to optimize the bulk-import operation. The ...
SQL Server resource usage (CPU, Memory, Storage) and Configuration Slow query performance Security, Encryption, Auditing, Authorization Database Client Programming Integration Services (SSIS) Master Data Services Parallel Data Warehouse (APS) Reporting Services (SSRS) SQL Server on Linux Tools Product Up...
( <query_hint> [ ,...n ] ) ] <column_definition> ::= column_name <data_type> [ COLLATE collation_name ] [ NULL | NOT NULL ] <data type> ::= [ type_schema_name . ] type_name [ ( precision [ , scale ] | max ] -- External tool only syntax INSERT { [BULK] [ database...
1 row in set (0.04 sec) //关闭半同步strace日志 mysql> set global rpl_semi_sync_slave_trace_level = 32; Query OK, 0 rows affected (0.00 sec) mysql> show variables like 'rpl_semi_sync_slave_trace_level'; +---+---+ | Variable_name | ...
[ OPTION ( <query_hint> [ ,...n ] ) ] Arguments WITH <common_table_expression> Specifies the temporary named result set, also known as common table expression, defined within the scope of the INSERT statement. The result set is derived from a SELECT statement. ...