id=-1%20union%20select%201,(select%20service_level%20from%20table(sysproc.env_get_inst_info())%20as%20instanceinfo),3,4%20from%20syscat.tables--+ ## 获取当前用户 SELECT user FROM sysibm.sysdummy1 SELECT session_user FROM sysibm.sysdummy1 SELECT system_user FROM sysibm.sysdummy1 ## ...
Here we presented just a few examples of the interesting pieces of data you can mine from SQL Server and the performance picture you can paint once you have that data, thanks to system tables. We've looked only at sysprocesses here. However, syslockinfo is an interesting table as well, si...
playboy=> select pg_size_pretty(pg_database_size('playboy')); //以KB,MB,GB的方式来查看数据库大小 pg_size_pretty --- 3553 kB (1 row) 2,查看多表 playboy=> \dt //相当于mysql的,mysql> show tables; List of relations Schema | Name | Type | Owner ---+---+---+--...
System Base-Table Metadata A grantee that has CONTROL, ALTER, or VIEW DEFINITION permission on a database can see system base table metadata in thesys.objectscatalog view. The grantee can also resolve the names and object IDs of system base tables by using built-in functions such asOBJECT_NA...
FULL已啟用 FILESTREAM FileTables 的完整非交易式存取。 DIRECTORY_NAME = <directory_name> 適用於:SQL Server 2012 (11.x) 和更新版本 Windows 相容的目錄名稱。 在 SQL Server 執行個體的所有 Database_Directory 名稱之間,此名稱必須是唯一的。 不論 SQL Server 定序設定為何,唯一性比較不區分大小寫。 在此...
//公有方法,根据Sql语句,返回是否查询到记录publicboolGetRecord(stringXSqlString){Open();SqlDataAdapteradapter=newSqlDataAdapter(XSqlString,Connection);DataSetdataset=newDataSet();adapter.Fill(dataset);Close();if(dataset.Tables[0].Rows.Count>0){returntrue;}else{returnfalse;}}//公有方法,返回Sql语句...
[ERR] 0> 1577 - Cannot proceed because system tables used by Event Scheduler were found damaged at server start [DTF] Process terminated naivcat客户端报错: 命令行查看报错: mysql> show databases; +---+ | Database | +---+ | information_schema...
Database samples Errors & events Event classes Native interfaces System catalog views System compatibility views System dynamic management views System functions System information schema views System stored procedures System tables System tables Extended Events Tables - trace_xe_action_map Extended Events Ta...
所有用户:all_tables 包含系统用户:dba_tables 默认表空间:USERS !!!系统默认表空间:SYSTEM 存放的表空间:SYSTEM 三、 查看表空间名称 select * from dba_tablespaces 1. 四、 查看表空间大小 (MB) select tablespace_name,sum(bytes)/1024/1024 from dba_data_files(#数据文件) group by tablespace_name; ...
下面的表格显示了 SQL Server 2000 系统数据表 system tables 和相应的 SQL Server 2005 及以后的目录视图之间的映射关系。 SQL Server2005 引入了 250 多个新的目录视图。微软强烈建议我们使用新的目录视图来访问元数据。参考Catalog Views (Transact-SQL)。