You can query the SYSOBJECTS view to find all of the tables in the database. This shows all objects, so to filter it to tables we can filter on the xtype column equals the value of “U”, which represents a user table. Here’s the query: SELECT*FROMsysobjectsWHERExtype='U'ORDERBYn...
(1) sp_tables (Transact-SQL) - SQL Server | Microsoft Learn. https://learn.microsoft.com/zh-tw/sql/relational-databases/system-stored-procedures/sp-tables-transact-sql?view=sql-server-ver16. (2) sp_tables_ex (Transact-SQL) - SQL Server | Microsoft Learn. https://learn.microsoft.com/zh...
Delete all rows from a temporary table except those meeting a selection criteria delete bakups older than 1 day delete both parent and child table records in one query. Delete character and everything after it Delete comma from table column data Delete data from all tables in a schema Dele...
[i].StrLen_or_Ind)); // all catalogs query printf( "A list of names of all catalogs\n" ); retCode = SQLTables( hstmt, (SQLCHAR*)SQL_ALL_CATALOGS, SQL_NTS, (SQLCHAR*)"", SQL_NTS, (SQLCHAR*)"", SQL_NTS, (SQLCHAR*)"", SQL_NTS ); for ( retCode = SQLFetch(hstmt) ; ...
[i].StrLen_or_Ind)); // all catalogs query printf( "A list of names of all catalogs\n" ); retCode = SQLTables( hstmt, (SQLCHAR*)SQL_ALL_CATALOGS, SQL_NTS, (SQLCHAR*)"", SQL_NTS, (SQLCHAR*)"", SQL_NTS, (SQLCHAR*)"", SQL_NTS ); for ( retCode = SQLFetch(hstmt) ; ...
DMLQueryReturnsOutputToClient DML 查询将输出返回到客户端,并且不可并行化。 MixedSerialAndParallelOnlineIndexBuildNotSupported 单个联机索引生成的串行和并行计划组合不受支持。 CouldNotGenerateValidParallelPlan 验证并行计划失败,故障回复到串行计划。 NoParallelForMemoryOptimizedTables 引用的内存中 OLTP 表不支持并行...
Created_tmp_disk_tables:创建内部磁盘临时表的数量; Created_tmp_tables:创建内部临时表的数量; Start/End:语句开始和结束时间 Tips:在MariaDB中,可以开启log_slow_verbosity参数,可以更加详尽的打印出慢SQL的执行细节,该参数在MySQL8.0版本中并未支持,读者感兴趣可以自行查阅相关信息。
数据查询语言(Data Query Language,DQL) 用来查询表中的记录,主要包含SELECT命令,来查询表中的数据。 数据控制语言(Data Control Language,DCL) 用来确认或者取消对数据库中的数据进行的变更。除此之外,还可以对数据库中的用户设定权限。主要包含以下几种命令: ...
you want to access data of tables in the production environment, you must specify the name of the project to which the tables belong in SQL commands. If you do not have permissions to query the data of the tables in the production environment, go toSecurity Centerto request the permissions...
The query hints, though, must still be honored. The join hint for the pair of tables might only restrict the selection of allowed join methods in the query hint. For more information, see Join hints. DISABLE_OPTIMIZED_PLAN_FORCING Applies to: SQL Server (Starting with SQL Server...