PG常用SQL,pgsql一、查看當前資料庫連接SELECT pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_activity(s.backendid) AS current_query FROM (SELECT pg_stat_get_backend_idset() AS backendid) AS s;二、查看當前正在運行sql SELECT procpid, start,
T-SQL 判斷 是否存在(資料庫,表,預存程序,約束。。。和列),t-sql預存程序判斷資料庫是不是存在 if DB_ID(N'DATABASENAME') is not null判斷表,視圖,預存程序,遊標的方法綜合如下: use databasename--跳轉到指定資料庫 goif object_id(N'a',N'U') is not nulldrop table ago註:a
BUG:mysql 5.6 Invalid use of GRANT/REVOKE command breaks replication,revokereplicationbug描述:當使用revoke,grant命令收回,授予許可權出錯時(語法錯誤除外),會導致主從同步異常終止。如:mysql> revoke select on *.* from aaa;ERROR 1141 (42000): There is no such grant defined for user 'aaa'
Demonstration of DB Query Analyzer 6.03 Installation and Running on Microsoft Windows 8,Demonstration of DB Query Analyzer 6.03 Installation and Running on Microsoft Windows 8
PostgreSQL簡介,postgresqlPostgreSQL簡介: PostgreSQL在業內通常也簡稱PG,是一個關係型資料庫管理系統,適用於各種Linux作業系統、Windows、Solaris、BSD和Mac OS X。PostgreSQL遵循BSD許可,是一個開源軟體,PostgreSQL作為全球第四大關係型資料庫服務,正在以飛快的速