SQLiteã§vacuum - Junk Blog
ã“ã“ã®MTã§ã¯SQLiteを使ã£ã¦ã„る。SQLiteã§DBã®å†æ§‹æˆ(vacuum)ã‚’ã™ã‚‹äº‹ã§ä¸è¦ãªé ˜åŸŸã‚’開放ã§ãる。やる事ã¯ä»¥ä¸‹ã®ã¨ãŠã‚Šã€‚sqlite3 データベースファイルå sqlite> vacuum sqlite> .quit念ã®ãŸã‚ã€è¡Œã†å‰ã«backupã‚’ã—ã¦ãŠã。ã¡ãªã¿ã«2.5MB-> 2.2MBã¨1割削減ã§ãã¾ã—ãŸã€‚
SQLite3's C++ API 日本語
C/C++ Interface For SQLite Version 3 [日本語超訳版] 最終改訂: 2006å¹´02月16æ—¥ 10時59分54秒 原文: http://www.sqlite.org/capi3.html -- last modified on 2005/03/11 04:39:58 Back to index 1.0 Overview SQLiteãƒãƒ¼ã‚¸ãƒ§ãƒ³3.0ã¯ã€SQLiteã®æ–°ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã‚ã‚Šã€æ´¾ç”Ÿå…ƒã®SQLite 2.8.13コード・ベースã¨ã¯ã€éžäº’æ›æ€§ã®ãƒ•ã‚¡ã‚¤ãƒ«ãƒ»ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆãŠã‚ˆã³APIã‚’å‚™ãˆã¦ã„ã¾ã™ã€‚SQLiteãƒãƒ¼ã‚¸ãƒ§ãƒ³3.0ã¯æ¬¡ã®æ©Ÿèƒ½è¦æ±‚ã«ç”ãˆã‚‹ãŸã‚ã«ä½œæˆã•ã‚Œã¾ã—ãŸ: UTF-16ã®å¯¾å¿œ ç…§åˆé †åºã‚’ユーザ定義å¯èƒ½ãªãƒ†ã‚スト インデックス付カラムã«BLOBã‚’æ ¼ç´ã™ã‚‹èƒ½åŠ› ã“れらã®æ©Ÿèƒ½ã‚’実装ã™ã‚‹ãŸã‚ã«ã¯ã€ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ãƒ»ãƒ•ã‚¡ã‚¤ãƒ«ãƒ»ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã«éžäº’æ›ãªå¤‰æ›´ãŒå¿…è¦
[ThinkIT] Part2：トライï¼SQLite（1） (2/2)
ã¾ãšã€ä½œæˆã—ãŸãƒ†ãƒ¼ãƒ–ルã«ãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’è¿½åŠ ã—ã¦æ¤œç´¢ã—ã¦ã¿ã¾ã™ã€‚æ£ã—ã„記述ã§ã‚ã‚Œã°æ¤œç´¢çµæžœãŒè¿”ã£ã¦ãã‚‹ã§ã—ょã†ï¼ˆå›³2）。 sqlite> create table test_auto ( no1 INTEGER PRIMARY KEY,no2 ); sqlite> insert into test_auto (no2) values('test1'); sqlite> insert into test_auto (no2) values('test2'); sqlite> insert into test_auto (no2) values('test3'); sqlite> insert into test_auto (no2) values('test4'); sqlite> select * from test_auto order by no1; 1|test1 2|test2 3|te
sqlite2mysql.rb
â–² sqlite2mysql.rb ã‚‚ã†ã‚ã‚‹ã‹ã‚‚ã§ã™ãŒã€å¿…è¦ã«è¿«ã‚‰ã‚Œã¦SQLite3ã§ãƒ€ãƒ³ãƒ—ã—ãŸãƒ‡ãƒ¼ã‚¿ã‚’MySQLã¸ã‚¤ãƒ³ãƒãƒ¼ãƒˆå¯èƒ½ãªå½¢å¼ã«å¤‰æ›ã™ã‚‹ã‚¹ã‚¯ãƒªãƒ—トを作ã£ãŸã€‚ ã¦ãã¨ãƒ¼ãƒ‘ーズãªã®ã§äºˆæƒ³å¤–ã®ä½ç½®ã«æ”¹è¡ŒããŸã‚Šã™ã‚‹ã¨å¼±ã„ã‹ã‚‚。ã„ã¾ã®ã¨ã“å‹•ã„ã¦ã‚‹ã€‚ã‚„ã£ã¦ã‚‹ã“ã¨ã¯ã€ transactionã®å‰Šé™¤ sqlite固有ã®ãƒ‡ãƒ¼ã‚¿ã®å‰Šé™¤ create tableã®å‰Šé™¤ insertã®ãƒ†ãƒ¼ãƒ–ルåã®ã‚¯ã‚©ãƒ¼ãƒˆã‚’削除 insertã§ã‚«ãƒ©ãƒ åã‚’çœç•¥ã™ã‚‹ã¨SQLiteã¨MySQLã§ã‚«ãƒ©ãƒ ã®é †ç•ªãŒä¸€è‡´ã›ãšå¤±æ•—ã™ã‚‹ã®ã§create tableè¡Œã‹ã‚‰ã‚«ãƒ©ãƒ åを抽出ã—ã¦insertã¸ã¤ã‘ã‚‹ SQLiteã®booleanã‚’tinyint(t=1, f=0)ã¸å¤‰æ› ãらã„ã‹ãªã€‚ create table行を削除ã—ã¦ã„ã‚‹ã®ã§ã€å˜ç´”ã«ãƒ‡ãƒ¼ã‚¿ã®insertã ã‘ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’出力ã™ã‚‹ã€‚テーブルã¯äºˆã‚ $ rake migrate ã§ä½œ
http://nubyonrails.com/articles/2006/06/01/san-francisco-sqlite3-memory-tests-asteroids
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pylori*style: ActiveRecordã§SQLiteã®busy_timeoutã‚’ã²ãã®ã°ã™
ActiveRecordã§SQLiteアダプタを使ã£ã¦ã„ã‚‹ã¨ãã€ã²ã¨ã¤ã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«ã«è¤‡æ•°ã®ãƒ—ãƒã‚»ã‚¹ã‚„スレッドã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹ã—ã¦ã„ã‚‹ã¨ã€ SQLite3::BusyException: database is locked ã¨ã„ã†ã‚¨ãƒ©ãƒ¼ãŒå‡ºã‚‹ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚SQLiteã§ã¯ã‚¢ã‚¯ã‚»ã‚¹ã‚’試ã¿ã¦ã‚¨ãƒ©ãƒ¼ã‚’è¿”ã™ã¾ã§ã«ãƒãƒƒã‚¯ã‚’å¾…ã¤æ™‚é–“ãŒãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ã¯0らã—ãã€ãƒãƒƒã‚¯çŠ¶æ…‹ã ã£ãŸå ´åˆã¯å³åº§ã«ã‚¨ãƒ©ãƒ¼ãŒç™ºç”Ÿã—ã¾ã™ã€‚ SQLite ver.3ã®å¯¾è©±åž‹ãƒ—ãƒã‚°ãƒ©ãƒ sqlite3ã§ã¯ã€ãƒãƒƒã‚¯æ™‚ã®å¾…ã¡æ™‚é–“ã‚’è¨å®šã™ã‚‹ .timeout ã¨ã„ã†ã‚³ãƒžãƒ³ãƒ‰ãŒã‚ã‚Šã¾ã™ã€‚ .timeout 1000 ã®ã‚ˆã†ã«ã—ã¦ä½¿ã„ã¾ã™(å˜ä½ã¯ãƒŸãƒªç§’)。ã“れを使ãˆã°ãƒãƒƒã‚¯ã•ã‚Œã¦ã„ã‚‹å ´åˆã«ã‚¨ãƒ©ãƒ¼ã§ã¯ãªãã€ãƒãƒƒã‚¯è§£é™¤ã¾ã§å¾…ã¡çŠ¶æ…‹ã«ã•ã›ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ ActiveRecordã‹ã‚‰ timeout 値をセットã™ã‚‹ã«ã¯ã€ã‚„や強引ã§ã™ãŒã¨ã‚Šã‚
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SQLite Home Page
What Is SQLite? SQLite is a C-language library that implements a small, fast, self-contained, high-reliability, full-featured, SQL database engine. SQLite is the most used database engine in the world. SQLite is built into all mobile phones and most computers and comes bundled inside countless other applications that people use every day. More Information... The SQLite file format is stable, cross
三日間RSSリーダークッã‚ング ãã®10 sqliteã§AUTOINCREMENT - sshi.Continual
sqliteã«ã¯AUTOINCREMENT制約ãŒãªã„ã®ã§ã€ã‚„ã‚ŠãŸã„ã®ã«ã‚„ã‚Œãªã„ãªãƒ¼ ã¨æ€ã£ã¦ã„ãŸãŒã€ http://www.sqlite.org/faq.html#q1 を見るã¨ãªã‚“ã¨ã§ãるらã—ã„。ã“ã†ã‚„る。 sqlite> create table test (a INTEGER PRIMARY KEY,b); sqlite> insert into test values(NULL,'hoge'); sqlite> select * from test; 1|hoge sqlite> insert into test (b) values ('ahoge'); sqlite> select * from test; 1|hoge 2|ahogeINTEGER ãŠã‚ˆã³ PRIMARY KEYã«æŒ‡å®šã—ãŸå€¤ã«NULLã‚’insertã™ã‚‹ã¨ã€AUTOINCREMENTã¨åŒã˜å‡¦ç†ã«ãªã‚‹ã‚ˆã†ã 。 2
SQLite Tutorial
Copyright (c) 2004 by Mike Chirico [email protected].net This material may be distributed only subject to the terms and conditions set forth in the Open Publication License v1.0, 8 June 1999 or later. The latest update of this document . Updated: Thu Jan 11 17:35:19 EST 2007 This article explores the power and simplicity of sqlite3, starting with common commands and triggers. It then cove
SQLite ã® INSERT ã¯é…ã„ã®ã‹ï¼Ÿ - 元祖　サトシã®ãƒ–ãƒã‚°
MySQLã¨SQLite(PrinCo.)ã¨ã„ã†è¨˜äº‹çµŒç”±ã§ã€ç”Ÿã¾ã‚Œå¤‰ã‚ã‚‹PHP - Zend Engine 2ã€SQLiteã®å®ŸåŠ›ã¯?(MYCOM PC WEB)ã¨ã„ã†è¨˜äº‹ã‚’èªã‚“ã 。 MySQL 㨠SQLite 㧠INSERT 時ã®å‡¦ç†é€Ÿåº¦ãŒå…¬é–‹ã•ã‚Œã¦ã„る。 1000件ã®ãƒ¬ã‚³ãƒ¼ãƒ‰ã®INSERTを実行ã—ã€ãã‚Œãžã‚Œã«ã©ã‚Œãらã„ã®æ™‚é–“ãŒã‹ã‹ã£ã¦ã„ã‚‹ã‹ã‚’示ã—ã¦ã„ã‚‹ã®ã 。 MySQL㌠0.4秒ã€SQLite ㌠16秒ã ã¨ã„ã†ã®ã ãŒã€ã“ã‚Œã¯ã‚ã¾ã‚Šã«ã‚‚ã²ã©ã™ãŽã‚‹ã€‚ã—ã‹ã‚‚ã€çµè«–ã¨ã—ã¦ã©ã†ã‚„ら大é‡ãƒ‡ãƒ¼ã‚¿ã®é€£ç¶šæŒ¿å…¥ã¯SQLiteã®ä¸å¾—æ„ãªå‡¦ç†ã®ã‚ˆã†ã 。ã¨æ›¸ã‹ã‚Œã¦ã„る。1000件程度ã§ã“ã‚“ãªã«ã‹ã‹ã‚‹ã‚“ã ã£ãŸã‚‰ã€10000件ã ã£ãŸã‚‰160秒ãらã„ã‹ã‹ã‚‹(å˜ç´”ã™ãŽã€‚)ã£ã¦äº‹ï¼Ÿ 実ã¯ã“ã‚Œã«ã¯ã‹ã‚‰ãã‚ŠãŒã‚ã£ã¦ã€SQLite ã®å‡¦ç†ã¯ トランザクション ã®ä¸ã§ãªã„ã¨è‘—ã—ãé…ã„ã®ã 。ãŠãらãã€ã“ã‚ŒãŒåŽŸå› ãªã®ã§ã¯ãªã„
sqlite: SQLite データベースã¨ä¼šè©±ã™ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ
sqlite: SQLite データベースを管ç†ã™ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ (This page was last modified on 2003/06/29 16:11:13 UTC) SQLite ライブラリã«ã¯ sqlite ã¨ã„ã†ã‚·ãƒ³ãƒ—ルãªã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ ユーティリティãŒå«ã¾ã‚Œã¾ã™ã€‚ã“れを使ã†ã¨ã€ãƒ¦ãƒ¼ã‚¶ã¯æ‰‹ä½œæ¥ã§ SQLite データベースã«æŽ¥ç¶šã—㦠SQL コマンドを実行ã§ãã¾ã™ã€‚ã“ã®æ–‡æ›¸ã§ã¯ sqlite ã®ä½¿ã„æ–¹ã«é–¢ã™ã‚‹æ¦‚略を紹介ã—ã¦ã„ã¾ã™ã€‚ èµ·å‹•ã™ã‚‹ sqlite ã‚’èµ·å‹•ã™ã‚‹ã«ã¯å˜ã« "sqlite" ã¨ã‚¿ã‚¤ãƒ—ã—ã€ãã®å¾Œã‚ã« SQLite データベースをä¿æŒã™ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«åを付ã‘ã¾ã™ã€‚ファイルãŒå˜åœ¨ ã—ãªã„å ´åˆã¯ã€è‡ªå‹•çš„ã«æ–°ã—ã作られã¾ã™ã€‚起動後 sqlite プãƒã‚°ãƒ©ãƒ ã¯ã€SQL をタイプã™ã‚‹ãŸã‚ã®ãƒ—ãƒãƒ³ãƒ—トを表示ã—ã¾ã™ã€‚ SQL ステートメント（終了ã¯ã‚»ãƒŸã‚³ãƒãƒ³ï¼‰ã‚’タイプã—〠"E
SQLite/Ruby - Ruby
軽é‡ãƒ»é«˜é€Ÿãªãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹SQLiteã‚’Rubyã‹ã‚‰æ‰±ã†ãŸã‚ã®ãƒ©ã‚¤ãƒ–ラリ。 インストール Windowsã®å ´åˆ RubyForgeã‹ã‚‰ã€ sqlite3-ruby(sqlite3-ruby-x.x.x.zip)をダウンãƒãƒ¼ãƒ‰ã™ã‚‹ã€‚ ダウンãƒãƒ¼ãƒ‰ã—ãŸãƒ•ã‚¡ã‚¤ãƒ«ã‚’展開ã™ã‚‹ã€‚ インストールプãƒã‚°ãƒ©ãƒ を実行ã™ã‚‹ã€‚ ruby setup.rb config ruby setup.rb setup ruby setup.rb install RubyGemsを使ã†å ´åˆ RubyGemsをインストールã—ãŸå¾Œã€ 次ã®ã‚³ãƒžãƒ³ãƒ‰ã‚’実行ã™ã‚‹ã€‚ gem install sqlite3-ruby SQLiteã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« SQLite Download Pageã‹ã‚‰ã€ sqlitedll-3_x_x.zipをダウンãƒãƒ¼ãƒ‰ã™ã‚‹ã€‚ ダウンãƒãƒ¼ãƒ‰ã—ãŸãƒ•ã‚¡ã‚¤ãƒ«ã‚’展開ã™ã‚‹ã€‚ sqlite.dllをパスã®é€šã£ãŸãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã«ã‚³ãƒ”
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