10 2022 档案

摘要:1. 数据库大小(pg_database_size) postgres=# select datname from pg_database; datname postgres osdbadb template1 template0 mytestdb01 db03 (6 rows) postgres= 阅读全文
posted @ 2022-10-27 12:46 gwgwgw 阅读(1466) 评论(0) 推荐(0) 编辑
摘要:[oracle@ogg1 mesg]$ oerr ora 20 00020, 00000, "maximum number of processes (%s) exceeded" // *Cause: All process state objects are in use. // *Action: 阅读全文
posted @ 2022-10-26 23:05 gwgwgw 阅读(32) 评论(0) 推荐(0) 编辑
摘要:Oracle中创建视图的语法,没有临时视图这概念CREATE [OR REPLACE] [[NO] FORCE] [EDITIONING] VIEW [schema.] view [ ( { alias [ inline_constraint... ] | out_of_line_constrain 阅读全文
posted @ 2022-10-23 15:49 gwgwgw 阅读(119) 评论(0) 推荐(0) 编辑
摘要:Oracle 11.2官方文档中关于临时表的介绍(https://docs.oracle.com/cd/E11882_01/server.112/e25494/tables.htm#ADMIN11633)Creating a Temporary TableTemporary tables are u 阅读全文
posted @ 2022-10-23 13:35 gwgwgw 阅读(1266) 评论(0) 推荐(0) 编辑
摘要:PostgreSQL两种临时表:一种基于会话级的临时表;一种是事务级的临时表。 PG的版本及当前user: postgres=# select version(); version PostgreSQL 11.2 on x86_64-pc-linux-gnu, compiled by gcc (GC 阅读全文
posted @ 2022-10-22 12:44 gwgwgw 阅读(772) 评论(0) 推荐(0) 编辑

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