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目錄:
PostgreSQL 學(xué)習(xí)手冊(數(shù)據(jù)表) .............................................................................................................................................. 4
一、表的定義: ............................................................................................................................................................... 4
PostgreSQL 學(xué)習(xí)手冊(模式 Schema) ..................................................................................................................................... 9
PostgreSQL 學(xué)習(xí)手冊(表的繼承和分區(qū)) ............................................................................................................................ 10
一、表的繼承: ............................................................................................................................................................. 10
PostgreSQL 學(xué)習(xí)手冊(常用數(shù)據(jù)類型) ................................................................................................................................ 16
一、數(shù)值類型: ............................................................................................................................................................. 16
六、數(shù)組: ..................................................................................................................................................................... 22
PostgreSQL 學(xué)習(xí)手冊(函數(shù)和操作符<一>) ........................................................................................................................ 25
一、邏輯操作符: ......................................................................................................................................................... 25
四、字符串函數(shù)和操作符: ......................................................................................................................................... 27
五、位串函數(shù)和操作符: ............................................................................................................................................. 29
PostgreSQL 學(xué)習(xí)手冊(函數(shù)和操作符<二>) ........................................................................................................................ 30
六、模式匹配: ............................................................................................................................................................. 30
八、時間/日期函數(shù)和操作符: .................................................................................................................................... 33
PostgreSQL 學(xué)習(xí)手冊(函數(shù)和操作符<三>) ........................................................................................................................ 35
九、序列操作函數(shù): ..................................................................................................................................................... 35
十二、系統(tǒng)信息函數(shù): ................................................................................................................................................. 38
PostgreSQL 學(xué)習(xí)手冊(索引) ................................................................................................................................................ 42
一、索引的類型: ......................................................................................................................................................... 42
四、唯一索引: ............................................................................................................................................................. 43
PostgreSQL 學(xué)習(xí)手冊(事物隔離) ...................................................................................................................................... 45
PostgreSQL 學(xué)習(xí)手冊(性能提升技巧) ................................................................................................................................ 46
一、使用 EXPLAIN: ...................................................................................................................................................... 46
PostgreSQL 學(xué)習(xí)手冊(服務(wù)器配置) .................................................................................................................................. 50
一、服務(wù)器進程的啟動和關(guān)閉: ................................................................................................................................. 50
PostgreSQL 學(xué)習(xí)手冊(角色和權(quán)限) .................................................................................................................................... 52
PostgreSQL 學(xué)習(xí)手冊(數(shù)據(jù)庫管理) ................................................................................................................................ 54
一、概述: ..................................................................................................................................................................... 54
PostgreSQL 學(xué)習(xí)手冊(數(shù)據(jù)庫維護) .................................................................................................................................. 56
一、恢復(fù)磁盤空間: ..................................................................................................................................................... 56
二、更新規(guī)劃器統(tǒng)計: ................................................................................................................................................. 57
四、定期重建索引: ..................................................................................................................................................... 59
PostgreSQL 學(xué)習(xí)手冊(系統(tǒng)表) ............................................................................................................................................ 61
一、pg_class: .................................................................................................................................................................. 61
三、pg_attrdef: ............................................................................................................................................................... 63
四、pg_authid: ................................................................................................................................................................ 64
五、pg_auth_members: ................................................................................................................................................. 64
七、pg_tablespace: ......................................................................................................................................................... 65
十、pg_index: ................................................................................................................................................................. 67
PostgreSQL 學(xué)習(xí)手冊(系統(tǒng)視圖) ........................................................................................................................................ 68
一、pg_tables: ................................................................................................................................................................ 68
二、pg_indexes: .............................................................................................................................................................. 68
三、pg_views: ................................................................................................................................................................. 68
四、pg_user: ................................................................................................................................................................... 69
五、pg_roles: .................................................................................................................................................................. 69
六、pg_rules: .................................................................................................................................................................. 69
七、pg_settings: ............................................................................................................................................................. 70
PostgreSQL 學(xué)習(xí)手冊(客戶端命令<一>) ............................................................................................................................ 70
零、口令文件: ............................................................................................................................................................. 70
PostgreSQL 學(xué)習(xí)手冊(客戶端命令<二>) ............................................................................................................................ 75
七、pg_dump:................................................................................................................................................................. 75
八、pg_restore: .............................................................................................................................................................. 77
PostgreSQL 學(xué)習(xí)手冊(SQL 語言函數(shù)) ................................................................................................................................. 83
一、基本概念: ............................................................................................................................................................. 83
PostgreSQL 學(xué)習(xí)手冊(PL/pgSQL 過程語言) ....................................................................................................................... 86
一、概述: ..................................................................................................................................................................... 86