Query Language Understood by SQLite
SQL As Understood By SQLite SQLite understands most of the standard SQL language. But it does omit some features while at the same time adding a few features of its own. This document attempts to describe precisely what parts of the SQL language SQLite does and does not support. A list of SQL keywords is also provided. The SQL language syntax is described by syntax diagrams. The following syntax d
MetaWhere – metautonomo.us
Why? I hate SQL fragments in Rails code. Resorting to where('name LIKE ?', '%something%') is an admission of defeat. It says, “I concede to allow your rigid, 1970′s-era syntax into my elegant Ruby world of object oriented goodness.†While sometimes such concessions are necessary, they should always be a last resort, because once you move away from an abstract representation of your intended query,
Surfin’ Safari - Blog Archive » WebKit Does HTML5 Client-side Database Storage
The current working spec for the HTML5 standard has a lot of exciting features we would eventually like to implement in WebKit. One feature we felt was exciting enough to tackle now even though the spec is still in flux is client-side database storage. So for the last few weeks andersca, xenon, and I have been cooking up an implementation! The client-side database storage API allows web applicatio
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
Execute Query
Execute Query now on Google Groups We have set up Execute Query on Google Groups to consolidate queries and issues as well as provide an indexed support forum and mailing list. Please visit us at http://groups.google.com/group/executequery. You can also continue to log your issues and requests directly here or from the feedback option in the application help menu. Latest Version Execute Query v4.4
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PostgreSQLã‚’ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã™ã‚‹æ©Ÿä¼šãŒã‚ã£ãŸã®ã§ ãã®æ™‚ã«èª¿ã¹ãŸãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°é …目を備忘録ã¨ã—ã¦æ®‹ã—ã¦ãŠãã¾ã™ã€‚ ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã®é•ã„やサーãƒã®è¦æ¨¡ãªã©ã«ã‚ˆã£ã¦ã‚‚ 効果ã¯å¤‰ã‚ã£ã¦ãã‚‹ã¨æ€ã†ã®ã§ã‚ãã¾ã§å‚考程度ã®ã‚‚ã®ã§ã™ãŒã€‚ ・shared_buffers 7ç³»ã§ã¯8000〜10000程度ã¾ã§å¼•ã上ã’ã‚‹ 8ç³»ã§ã¯150000程度ã¾ã§å¼•ã上ã’ã‚‹ã“ã¨ãŒå¯èƒ½ã€100000程度ãŒæ€§èƒ½ã®ãƒ”ーク ã“ã‚Œã«å¤šã割り当ã¦ã‚‹ã‚ˆã‚ŠOSã®ãƒãƒƒãƒ•ã‚¡é ˜åŸŸã¨ã—ã¦ä½¿ã†æ–¹ãŒæ€§èƒ½ãŒå‘上ã™ã‚‹ テーブルサイズを割り出ã—ã¦è¨å®šã™ã‚‹ã®ãŒãƒ™ã‚¹ãƒˆ ç°¡å˜ã«è¨å®šã™ã‚‹ãªã‚‰æ載メモリé‡ã®1/4ã€æ載メモリãŒå¤šã‘ã‚Œã°1/2ãらã„ã§ã‚‚å¯ ãƒ»max_connections 7ç³»ã§ã¯256程度ã€8ç³»ã§ã¯1000程度ãŒæ€§èƒ½ã®ãƒ”ーク ・work_mem(sort_mem) é©åˆ‡ãªã‚µã‚¤ã‚ºã«èª¿æ•´ã™ã‚‹ã€2048〜4096程度 プãƒã‚»ã‚¹æ¯Ž
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ã„ã‚ã„ã‚ãªæœ¬ã‹ã‚‰ãƒ¡ãƒ¢ã£ã¦ããŸãƒ¡ãƒ¢ã®ãƒ¡ãƒ¢ã€‚出典を書ã„ã¦ãŠãã®ã‚’忘れãŸã€‚æ€ã„出ã—次第補完ã™ã‚‹ã‹ã‚‚。 deleteã®ã‚³ã‚¹ãƒˆã¯é«˜ã„ã®ã§ã€ç„¡åŠ¹åŒ–を示ã™ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ã‚’作ã£ã¦updateã™ã¹ã slow query logã«è¦æ³¨æ„ 多ãã®ã‚¨ãƒ³ãƒˆãƒªã§ã»ã¨ã‚“ã©ã®ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ãŒåŒã˜å€¤ã‚’æŒã¤å ´åˆã¯ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã®åŠ¹æžœãŒå°ã•ã„ →複åˆã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã®åŠ¹æžœãŒå¤§ãㄠ複åˆã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã¯æŒ‡å®šã®é †ç•ªãŒå¤§åˆ‡ã€‚Aã¨Bã¨ã„ã†æŒ‡å®šã®å ´åˆã€Aå˜ç‹¬ã§ã‚‚インデックスã®åŠ¹æžœãŒã‚る。逆ã¯çœŸã§ãªã„。 インデックスãŒä½¿ã‚ã‚Œã‚‹å ´é¢ã¯ フィールド値を定数ã¨æ¯”較ã™ã‚‹ã¨ã (where name = 'hogehoge') フィールド値ã§JOINã™ã‚‹ã¨ã (where a.name = b.name) フィールド値ã®ç¯„囲を求ã‚ã‚‹ã¨ã (<,>,between) LIKEå¥ãŒæ–‡å—列ã‹ã‚‰å§‹ã¾ã‚‹ã¨ã (where name like 'hoge%') min(),
Christophe Coenraets » New version of Salesbuilder Flex / AIR application
Before moving ahead and trying to know anything else, it’s important that we first understand what exactly is apache flex. Apache Flex ( Formerly known as Adobe Flex ) is a set of tools and libraries that helped in making Adobe Flash Apps and games. The Flex framework had 2 main components, MXML and ActionScript XML MXML is an XML-based markup language used for describing the UI of an application.
Comparison of different SQL implementations
The goal of this page was to gather information relevant for people who are porting SQL from one product to another and/or are interested in possibilities and limits of 'cross-product' SQL. The following tables compare how different DBMS products handled various SQL (and related) features. If possible, the tables also stated how the implementations should do things, according to the SQL standard.
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