Screwtape / sqlite-schema-diagram · GitLabGitLab.com
Convert PostgreSQL to SQLite - Manuel van Rijn
Today I’d like to share the steps I take when I need to convert a PostgreSQL database into a SQLite database. Commonly I have to do this when a Ruby on Rails application is in production and I have to check some issues with the production data. In the production environment we usually use a PostgreSQL database and for developing I use a SQLite database, so we need some conversion. Short story a.k.
About the sqlite3 WASM/JS Subproject
WebAssembly, a.k.a. WASM, is a standard defining a low-level programming language suitable (A) as a target for cross-compilation from many other languages and (B) for running via a virtual machine in a browser. Designed with scriptability via JavaScript in mind, it provides a way to compile C code (among others) to WASM and script it via JavaScript with relatively little friction despite the vast
Memory-Mapped I/O
Memory-Mapped I/O The default mechanism by which SQLite accesses and updates database disk files is the xRead() and xWrite() methods of the sqlite3_io_methods VFS object. These methods are typically implemented as "read()" and "write()" system calls which cause the operating system to copy disk content between the kernel buffer cache and user space. Beginning with version 3.7.17 (2013-05-20), SQLi
SQLiteã€mmap対応ã§æœ€å¤§2å€é«˜é€ŸåŒ–
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. 5月20æ—¥(米国時間)ã€SQLiteã®æœ€æ–°ç‰ˆã¨ãªã‚‹ã€ŒSQLite 3.7.17ã€ãŒå…¬é–‹ã•ã‚ŒãŸã€‚ã„ãã¤ã‹ã®æ©Ÿèƒ½è¿½åŠ ã¨ãƒã‚°ä¿®æ£ãŒå®Ÿæ–½ã•ã‚Œã¦ã„る。特ã«æ³¨ç›®ã•ã‚Œã‚‹ã®ã¯ãƒ¡ãƒ¢ãƒªãƒžãƒƒãƒ—I/Oã¨å‘¼ã°ã‚Œã‚‹æ©Ÿèƒ½ãŒè¿½åŠ ã•ã‚ŒãŸç‚¹ã«ã‚る。ã“ã®æ©Ÿèƒ½ã‚’有効ã«ã™ã‚‹ã¨ãƒ‡ã‚£ã‚¹ã‚¯I/OãŒå¤§é‡ã«ç™ºç”Ÿã™ã‚‹ã‚ˆã†ãªã‚±ãƒ¼ã‚¹ã§ãƒ¡ãƒ¢ãƒªã‚¢ã‚¯ã‚»ã‚¹ã®é‡ãŒæ¸›ã‚Šã€æœ€å¤§ã§2å€ã»ã©ã®æ€§èƒ½å‘上ãŒæœŸå¾…ã§ãる。ã„ãらã‹ã®å±é™ºæ€§ã‚‚ä¼´ã†ãŸã‚ã€ä»Šå›žã®ãƒªãƒªãƒ¼ã‚¹ã§ã¯ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ã¯æ©Ÿèƒ½ã¯ç„¡åŠ¹åŒ–ã•ã‚Œã¦ã„る。 SQLiteã¯åŸºæœ¬çš„ã«read(8)/write(8)システムコールを使ã£ã¦ãƒ‡ã‚£ã‚¹ã‚¯ä¸Šã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«ã®å†…
Improve INSERT-per-second performance of SQLite
Optimizing SQLite is tricky. Bulk-insert performance of a C application can vary from 85 inserts per second to over 96,000 inserts per second! Background: We are using SQLite as part of a desktop application. We have large amounts of configuration data stored in XML files that are parsed and loaded into an SQLite database for further processing when the application is initialized. SQLite is ideal
SQLite4: The Design Of SQLite4
1.0 Executive Summary SQLite4 is a compact, self-contained, zero-adminstration, ACID database engine in a library, just like SQLite3, but with an improved interface and file format. The run-time environment is encapsulated in an object. A greatly simplified Key/Value storage engine is used: A single large key space - not separate key spaces for each table and index as in SQLite3. Keys sort in lexi
SQLite ã®ãƒ‘フォーマンスãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã€ã¾ãŸã¯ DBIx::Sunny 0.16 ã®è©± - blog.nomadscafe.jp
GrowthForecastãŒMySQL対応ã—ãŸãã£ã‹ã‘ã¨ã—ã¦SQLiteã®dead lockå•é¡ŒãŒã‚ã£ãŸã®ã§ã™ãŒã€PRAGMAã§ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã™ã‚‹ã¨ãƒ‘フォーマンスãŒçµæ§‹å¤‰ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã£ãŸã®ã§ãƒ¡ãƒ¢ã€‚ ã‚„ã£ãŸã®ã¯ã€journal_mode 㨠synchronous ã®å¤‰æ›´ã€‚ãã‚Œãžã‚Œ > PRAGMA journal_mode = DELETE | TRUNCATE | PERSIST | MEMORY | WAL | OFF > PRAGMA synchronous = 0 | OFF | 1 | NORMAL | 2 | FULL ã®ã‚ˆã†ãªæ„Ÿã˜ã§å¤‰æ›´ã§ãる。 ãã‚Œãžã‚Œã®è¨å®šã¯ã€ PRAGMA Statements - synchronous PRAGMA Statements - journal_mode ã‚’ã¿ã‚‹ã®ãŒè‰¯ã„ã¨æ€ã†ã€‚journal_mode ã«æŒ‡å®šã§ãã‚‹WALã«ã¤ã„ã¦ã¯æ¬¡ã®ãƒš
SQLJet :: Pure Java SQLite
What is SQLJet SQLJet is an independent pure Java implementation of a popular SQLite database management system. SQLJet is a software library that provides API that enables Java application to read and modify SQLite databases. SQLJet does not support SQL queries; there is an API to work with the database on a lower level. SQLJet Google Group. SQLJet API Tutorial. SQLJet Sample Application: SQLite
tokuhirom blog
Blog Search when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: ${entry.path} [in template "__entry.ftlh" at line 3, column 25] - Reached through: #include "__entry.ftlh" [in template "entry.ftlh" at
[ThinkIT] Part2：トライï¼SQLite（1） (1/2)
SQLiteã¯ã€ç°¡æ˜“ãªãŒã‚‰SQL仕様をã»ã¼ã‚µãƒãƒ¼ãƒˆã™ã‚‹ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã™ã€‚PHPã¨ã“ã®SQLiteを組ã¿åˆã‚ã›ã¦ã€ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹Webアプリケーションを構築ã§ãã¾ã™ã€‚ SQLiteã¯çµ„ã¿è¾¼ã¿å°‚用ã®DBMSã§ã€PHP5ã‹ã‚‰ãƒãƒ³ãƒ‰ãƒ«ã•ã‚Œã¦ã„ã¾ã™ã€‚SQLiteå˜ä½“ã¯http://www.sqlite.org/ã‹ã‚‰å…¥æ‰‹ã§ãã¾ã™ã€‚SQLiteã¯ãƒ‘ブリックドメインã¨ã—ã¦æä¾›ã•ã‚Œã¦ãŠã‚Šã€ç„¡å„Ÿã§ã‚ã‚‹ã ã‘ã§ãªãã€ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã®æ”¹å¤‰ã‚„第三者ã¸ã®å†é…布も自由ã«è¡Œã†ã“ã¨ãŒã§ãã¾ã™ã€‚ SQLiteã®å‹•ä½œã‚’一言ã§è¡¨ã›ã°ã€ãƒ•ã‚¡ã‚¤ãƒ«æ“作をSQL言語ã§è¡Œã†ã‚ˆã†ãªã‚‚ã®ã§ã™ã€‚MySQLã‚„PostgreSQLãªã©ã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚µãƒ¼ãƒãƒ¼ã¨é•ã£ã¦ã€ã‚µãƒ¼ãƒãƒ¼ãƒ—ãƒã‚»ã‚¹ã‚’èµ·å‹•ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã›ã‚“。ã“ã®ãŸã‚ã€æ°—軽ã«åˆ©ç”¨ã§ãã¾ã™ã€‚構æˆã¯1ã¤ã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã«ã¤ã1ã¤ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‹ã‚‰æˆã‚Šã€ãƒ¦ãƒ¼ã‚¶ãƒ¼ã¨ã„ã†æ¦‚念ã¯ãªãã€ã‚¢ã‚¯ã‚»ã‚¹åˆ¶å¾¡ãªã©ã¯OSã®ãƒ¦
How to unlock iCloud in 2021 [Approved iPhone unlocking] - Why The Lucky Stiff
What is an iCloud Activation Lock?In 2014, a quirk was added to iOS7 by Apple that altered the way iPhone accounts were integrated into the software of the phone. This change was named iCloud Bypass Activation Lock. This new method made to iOS 7 (and carried through to iOS10, iOS11 and iOS 12) is that your iPhone, iPad, or Apple Watch is now locked to your personal iCloud, Apple account locked. It
![How to unlock iCloud in 2021 [Approved iPhone unlocking] - Why The Lucky Stiff](https://cdn-ak-scissors.b.st-hatena.com/image/square/307ae82552c651d5a2a90d94797630f30bf1277e/height=288;version=1;width=512/https%3A%2F%2Fwhytheluckystiff.net%2Fwp-content%2Fuploads%2F2019%2F01%2Ficloud-activation.png)
視基AB - sqlite超便利 / ã¯ã¦ãªãƒ–ックマークã®äººæ°—エントリã«ã¤ã„ã¦
sqliteã¨ã„ã†ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚’DBã¨ã—ã¦æ‰±ãˆã‚‹ãƒ©ã‚¤ãƒ–ラリã€ãƒ„ールãŒã‚ã£ã¦è¶…便利ãªã®ã§ã€ã¯ã¦ãªãƒ–ックマークã®äººæ°—エントリã€ï¼–月分をã¾ã¨ã‚ã¦å…¥åŠ›ã—ã¦ã¿ã¾ã—ãŸã€‚ã“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã§ã™ã€‚展開ã™ã‚‹ã¨ã€hb.dbã¨ã„ã†ãƒ•ã‚¡ã‚¤ãƒ«ãŒå‡ºã¦ãã¾ã™ã€‚ 準備 僕ãŒWindows XPã§ä½œæ¥ã—ãŸã®ã§ã€ãã‚Œã§èª¬æ˜Žã—ã¾ã™ã€‚DB内ã®ãƒ‡ãƒ¼ã‚¿ã¯å…¨ã¦ã‚·ãƒ•ãƒˆJISã«å¤‰æ›ã—ã¦ã‚ã‚Šã¾ã™ã€‚ SQLite Download Pageã‹ã‚‰ã€Precompiled Binaries For Windowsã®sqlite-3_2_2.zipã‚’è½ã¨ã—ã¦ãる。展開ã™ã‚‹ã¨ã€sqlite3.exeãŒå‡ºæ¥ã‚‹ã®ã§ã€hb.dbã¨åŒã˜ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã«å…¥ã‚Œã¦ã€ã‚³ãƒžãƒ³ãƒ‰ プãƒãƒ³ãƒ—トã‹ã‚‰ C:\work>sqlite3 hb.db ã§èµ·å‹•ã€‚ sqlite>.schema ã§å®šç¾©ã•ã‚Œã¦ã‚‹ãƒ†ãƒ¼ãƒ–ルç‰ãŒè¡¨ç¤ºã•ã‚Œã‚‹ã®ã§ã€SQLã§æ¤œç´¢ã¨ã‹ã—ã¦éŠã¶ã€‚æ£è¦åŒ–ã¯å…¨ç„¶ã—ã¦ã‚ã‚Šã¾ã›ã‚“。内容ã¯
1
ãŠçŸ¥ã‚‰ã›
ランã‚ング
ランã‚ング
リリースã€éšœå®³æƒ…å ±ãªã©ã®ã‚µãƒ¼ãƒ“スã®ãŠçŸ¥ã‚‰ã›
最新ã®äººæ°—エントリーã®é…ä¿¡
j次ã®ãƒ–ックマーク
kå‰ã®ãƒ–ックマーク
lã‚ã¨ã§èªã‚€
eコメント一覧を開ã
oページを開ã
How to convert a postgres database to SQLite?
https://sqlitebrowser.sourceforge.net/
{{#tags}}- {{label}}
{{/tags}}