æ¨æ¥ã®ã¨ã³ããªãSQLã¤ã³ã¸ã§ã¯ã·ã§ã³ã´ã«ã - èªè¨¼åé¿ã®æ»ææååã¯ã©ãã¾ã§çãã§ããã?ãã«ã¦ãèªè¨¼åé¿ã®æ»ææååã5æåã«ã§ããï¼ã'OR'1ãï¼ãã¨ã示ãã¾ãããã@masa141421356ããã¨ããã¾ããããï¼ãäºäººã¨ãæèã®ã¬ãã¥ã¢ã¼ã§ãï¼ãããidã¨pwdã«ã¾ããã£ãæ»æä¾ã示ãã¦ããã ãã¾ããããã¾ããããã®ä¾ã¯ãMySQLéå®ãªããããªãã¨3æåã§ããããã¯ãããã @masa141421356ããã®æ»æä¾ @masa141421356ããã®ãã¤ã¼ããå¼ç¨ãã¾ãã @ockeghem 大æµã®DBã§id=''OR' AND pwd='>' ' ãéãã¨æãã¾ãï¼idå´ã«ã'ORã, pwdå´ã«ã>' ãã§6æåï¼ãé·ã0ã®æååãNULLæ±ããããªãDBãªãæå¾ã®ã¹ãã¼ã¹ãæ¶ãã¦5æåã§ãã â masa141421356 (@masa141421356) June
ã¤ã³ããã¯ã¹ãããã¦ããã¼ãã«ã§ããçµå±ã©ã³ãã ãªã®ã§å ¨ä»¶ææ»ãã¦ããå¤ãè¿ãããã©ã¤ããªã¼ãã¼ã«å¯¾ã㦠rand() ããå ´åã§ã O(1) ã§ã¯ãªãã®ã§ãããããªããåé¿ããæ¹æ³ããã£ããããã®ããªã èªåã¯è¯ãorder by rand()ã使ã£ã¦ã¾ãã ãã§ãid:naoyaæ°ãæ¸å¿µãã¦ãããã«ãã¼ãã«ãµã¤ãºãå¢å¤§ããæã®åä½ã¨ããã®è¾ºãorder by rand()ã ã¨ãã¤ãã§ãã è¿½è¨ ä¸è¨ã®æ¹æ³ã¯idã«æ¬ çªããã£ããããã¨ä½¿ãç©ã«ãªãã¾ããã idã«æ¬ çªããªããidã«æ°å¤ã使ã£ã¦ãå ´åã®ã¿æå¹ã§ããæªããããã ãªã®ã§èªåã®å ´å㯠set @id = floor(rand()*n)+1; select id from entry where id = @id; ã£ã¦ãªæãã§ãã£ã¦ã¾ãã ç´ç²ã«order by rand()ã使ãããä½æçã«ããªãé«éã ã¨æããã©ã©ããããæ©ã
å»å¹´ã½ã¼ãã«é¢ããè¨äºãæ¸ããããä»æ¥ã¯ãã®ç¶ãã§ããã MySQLã§EXPLAIN SELECT...ãå®è¡ããã¨Extraãã£ã¼ã«ãã§ããè¦ããããUsing filesortãã¨ããæååãFilesortã£ã¦ä¸ä½ãªãã ããï¼ã¨æã£ããã¨ã¯ãªãã ããããååç´å ¥ã«è¨ã£ã¦Filesortã®æ£ä½ã¯ã¯ã¤ãã¯ã½ã¼ãã§ããã ã¯ã¨ãªã«ORDER BYãå«ã¾ããå ´åãMySQLã¯ããç¨åº¦ã®å¤§ããã¾ã§ã¯å ¨ã¦ã¡ã¢ãªå ã§ã¯ã¤ãã¯ã½ã¼ããå¦çãããããç¨åº¦ã®å¤§ããã¨ã¯sort_buffer_sizeã§ãããããã¯ã»ãã·ã§ã³ãã¨ã«å¤æ´å¯è½ã§ãããã½ã¼ãã«å¿ è¦ãªã¡ã¢ãªãsort_buffer_sizeãã大ãããªãã¨ããã³ãã©ãªãã¡ã¤ã«ï¼ãã³ãã©ãªãã¼ãã«ã§ã¯ãªãï¼ãä½æãããã¡ã¢ãªã¨ãã¡ã¤ã«ãä½µç¨ãã¦ã¯ã¤ãã¯ã½ã¼ããå®è¡ãããã Filesortã¯å ¨ã¦ã®ã½ã¼ãå¦çã«ããã¦å®è¡ãããããã§ã¯ãªããååã®è¨äº
CREATE TABLE session` ( `id` CHAR(32) NOT NULL, `data` TEXT, `update` INT(10) DEFAULT 0, PRIMARY KEY (`id`) ) TYPE=MyISAM; ã¨ããæãã§ã»ãã·ã§ã³ç®¡çç¨ã®ãã¼ãã«ãã¤ãã£ã¦ã <?php class mySession { var $_name; var $_path; function __constructor() { $this->mySession(); } function mySession() { } function start() { session_set_save_handler( array(&$this, 'open'), array(&$this, 'close'), array(&$this, 'read'), array(&$this,
$Id$ ãªãªã¼ã¹æ¥ï¼2006/05/23 æ²è¼æ¥ï¼2006/05/24 PostgreSQL 8.1.3ãã 8.1.4 ã®å¤æ´ç¹ 2006-05-24ããã¼ã¸ã§ã³8.1.4ã8.0.8ã7.4.13ã7.3.15 ã®ãªãªã¼ã¹ãããã¾ããã以ä¸ã«å¤æ´ç¹ãã¾ã¨ãã¾ããåé ç®ã®æ«å°¾ã«é©ç¨ããããã¼ã¸ã§ã³ãè¨è¼ãã¦ããã¾ããæ¬ããã¥ã¡ã³ãã¯PostgreSQLã®ãªãªã¼ã¹ãã¼ã/HISTORYãã¡ã¤ã«ãå ã«ä½æãã¦ãã¾ãã ã»ãã¥ãªãã£ã«é¢ããä¿®æ£ å¸¸ã«ãµã¼ãå´ã§ç¡å¹ãªã³ã¼ãã®ãã«ããã¤ãæåãæå¦ããããã«ä¿®æ£ããã¾ãã (8.1ç³»ã7.3ç³») ããã«ãããä¸å¾ã«ãã¹ã¦ã®æåã¨ã³ã³ã¼ãã£ã³ã°ã®ãã¹ã¦ã®ããã¹ãå ¥åã«å¯¾ãã¦æ¤æ»ãè¡ãããåã«è¦åãåºãã®ã§ã¯ãªã常ã«ã¨ã©ã¼ãåºãããã«ãªãã¾ããããã®å¤æ´ã¯ CVE-2006-2313 ã«è¨è¿°ããã¦ãããã㪠SQLã¤ã³ã¸ã§ã¯ã·ã§ã³æ»æã«å¯¾æãããã®
大æåå°æåãåºå¥ãªãæ¤ç´¢ããããããã«ãããããUPPER()ãªãããã¾ãã¦ããããã®ã§ããããããããããªå¿ è¦ããªã大æåå°æååºå¥ãªãã²ã£ãããã¨ã®ãã¨ã ã§ã大æåå°æååºå¥ãããå ´åã¯ãã ã³ã³ãã¤ã«æã«ã-DSQLITE_CASE_SENSITIVE_LIKE ãæå®ãã PRAGMA case_sensitive_like = 1 ãå®è¡ãã ã®2種é¡ã®æ¹æ³ããã模æ§ã ã³ã³ãã¤ã«æã®æ¹ã¯ã試ãã¦ããªãããPRAGMAã®æ¹ã¯è©¦ãã¦ã¿ã¦ãå®éã«å¤§æåå°æåãåºå¥ããããã¨ã確èªãã¾ããã(Firefoxã«å梱ããã¦ããSQLite3.3.5ã«ã¦) INDEXãå¹ãããããã«å¤§æåå°æåãåºå¥ããããªãã£ã¦æã¯ãããã©ãããããããªãã¦ã"PRAGMA case_sensitive_like = 1"ã«ãã¦ãããã»ãããæ¤ç´¢æã«è¡ãããå¦çãå°ãªãã¦ã¡ãã£ã¨ã¯æ©ããªã£ããããã®ã
select Date() as æ¥ä»é¨å ,Time() as æéé¨å ,Now() as æ¥ä»ã¨æé1 ,Now as æ¥ä»ã¨æé2 ,Year('2010/01/21 1:02:03') as å¹´1 ,Month('2010/01/21 1:02:03') as æ1 ,Day('2010/01/21 1:02:03') as æ¥1 ,Hour('2010/01/21 1:02:03') as æ1 ,Minute('2010/01/21 1:02:03') as å1 ,Second('2010/01/21 1:02:03') as ç§1 ,Now() + 1 as æ¥æ°å ç®1 ,DateAdd('d', 1, Now()) as æ¥æ°å ç®2 ,DateAdd('m', -1, Now()) as ææ°å ç® ,DateAdd('yyyy', 1, Now()) as å¹´æ°å ç® ,
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.
ç§ãSQLã«çããããããããªãã®ã§ãããæè¿ç¥ã£ãINSERTæã¨UPDATEæã®ä½¿ãæ¹ããç´¹ä»ãã¾ãã ãã£ããã¨ã§ããããããªãããï½ã¨æã£ã¦ãããããã£ã±ãã§ãã¾ããã INSERTæ INSERT-SELECTæ(SELECTçµæãä¸æ¬ã§INSERTãã)ã¯ç¥ã£ã¦ãã®ã§ãããINSERT-INTOæã§ç´æ¥å¤ãæå®ããå ´åã«ã1ã¬ã³ã¼ããã¤INSERTæãæµãã®ã£ã¦å¹çãæªãã¨æãã¦ããããã¾ã¨ãã¦è¤æ°è¡æ¿å ¥ããæ¸å¼ãããã¾ããã INSERT INTO TABLE_NAME1 ('COLUMN_A', 'COLUMN_B') VALUES (VALUE_A11, VALUE_B12), (VALUE_A21, VALUE_B22); MySQL:対å¿ãMySQL :: MySQL 5.1 ãªãã¡ã¬ã³ã¹ããã¥ã¢ã« :: 12.2.4 INSERT æ§æã VALUES æ§æãå©ç¨ã
ããMySQLã¯ãµãã¯ã¨ãªãå¼±ãã¨è¨ãããããããã¯æ¬å½ã ãããï¼ååã¯æ¬å½ã§ååã¯åã§ãããMySQLã®ãµãã¯ã¨ãªã ã£ã¦ãªãã§ãããã§ãé ãããã§ã¯ãªããè½ã¨ãç©´ããã£ããé¿ãã使ãã©ãããééããªããã°ãµãã¯ã¨ãªãé«éã«å®è¡ã§ããã®ã§ãããä»æ¥ã¯MySQLãã©ããªé¢¨ã«ãµãã¯ã¨ãªãå®è¡ããã©ã®ãããªå ´åã«é ãã®ãã¨ãããã¨ã«ã¤ãã¦èª¬æãããã EXPLAINã§å®è¡è¨ç»ã調ã¹ãéã«ãselect_typeã«ã¯ã¯ã¨ãªã®ç¨®é¡ã表示ãããã®ã ãã代表çãªãµãã¯ã¨ãªã«ã¯æ¬¡ã®3ã¤ã®ãã¿ã¼ã³ãããã SUBQUERY DEPENDENT SUBQUERY DERIVED çµè«ããè¨ãããé ãã®ã¯2çªç®ãDEPENDENT SUBQUERYã§ãããDEPENDENT SUBQUERYã¨ã¯ããããç¸é¢ãµãã¯ã¨ãªã«ç¸å½ãããã®ã§ããµãã¯ã¨ãªã«ããã¦å¤é¨ã¯ã¨ãªã®ã«ã©ã ãåç §ãã¦ãããµãã¯ã¨ãªã®ãã¨ã§ããããã
æ¦è¦CREATE [ TEMPORARY | TEMP ] SEQUENCE name [ INCREMENT [ BY ] increment ] [ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE ] [ START [ WITH ] start ] [ CACHE cache ] [ [ NO ] CYCLE ] 説æCREATE SEQUENCEã¯ãæ°ããã·ã¼ã±ã³ã¹çªå·çææ©æ§ãä½æãã¾ãã ããã¯ãnameã¨ããååãæã£ãä¸è¡ã ãã®æ°ããç¹æ®ãªãã¼ãã«ã®ä½æã¨åæåãè¡ãã¾ãã ã·ã¼ã±ã³ã¹çªå·çææ©æ§ã¯ããã®ã³ãã³ããå®è¡ããã¦ã¼ã¶ã«ãã£ã¦ææããã¾ãã ã¹ãã¼ãåãä¸ãããã¦ããå ´åããã®ã·ã¼ã±ã³ã¹ã¯æå®ãããã¹ãã¼ãã§ä½æããã¾ãã ã¹ãã¼ãåããªããã°ãã·ã¼ã±ã³ã¹ã¯ç¾å¨ã®ã¹ãã¼ãã§ä½æ
SQLite 㧠auto-increment ãªãã£ã¼ã«ããä½æããæ¹æ³ 2006-02-12-1: [SQLite][PHP][MySQL] PHP ã®ããã¥ã¢ã«ã® sqlite_last_insert_rowid ã®é ç®ãè¦ã¦ããã Tip: You can create auto-increment fields in SQLite by declaring them as INTEGER PRIMARY KEY in your table schema. ã¤ã¾ãï¼SQLite 㧠auto-increment ãªãã£ã¼ã«ããä½ããããã°ï¼ INTEGER PRIMARY KEY ãæå®ãã¦ãããã°ãããããï¼ ãã®ãããªè¨è¿°ãè¦ã¤ããã®ã§ãã¹ããã¦ã¿ãï¼ - SQLite 2.x ã®å ´å $ sqlite test.db SQLite version 2.8.16 Enter "
è£è¶³ ãã®è¨äºã¯æ§å¾³ä¸¸æµ©ã®æ¥è¨ããã®è»¢è¼ã§ããå URLãã¢ã¼ã«ã¤ããã¯ã¦ãªããã¯ãã¼ã¯1ãã¯ã¦ãªããã¯ãã¼ã¯2ã åå¿ã®ãã転è¼ãããã¾ããããã®è¨äºã¯2008å¹´6æ2æ¥ã«å ¬éããããã®ã§ãå½æã®å¾³ä¸¸ã®èãã示ããã®ããåºæ¬çã«å 容ãå¤æ´ããã«ãã®ã¾ã¾è»¢è¼ãããã®ã§ãã è£è¶³çµãã æ¨æ¥ã®ã¨ã³ããª(徳丸浩ã®æ¥è¨ - ããããSQLã¨ã¹ã±ã¼ãã«é¢ãã¦ä¸è¨ãã£ã¨ãã - SQLã®ã¨ã¹ã±ã¼ãåè)ã¯æããããå¤ãã®æ¹ã«èªãã§ããã ããããããã¨ããããã¾ãããã®ä¸ã§é«æ¨æµ©å æ°ãããã¯ãã³ã¡ã³ããé æ´ããã \ãescapeç¨æåã®DBã§\ã®escapeãå¿ é ã«ãªãçç±ãæ確ã«æ¸ããã¦ãªãã\'ãä¸ããããã¨ã'ã ãescapeããã¨â¦ãèªä½escapeã¯å±ããããå®å ¨ãªâ¦ä½ãæ¹ã3çã§è¿½å ã®ã3.失æä¾ãã§ã¯DBã§ç¨æãããescapeæ©è½ããæ¨å¥¨ãã¦ããªã ãã®ãã¡ãã¾ãã\ãã®ã¨ã¹ã±ã¼ããå¿
ã¡ãã£ã¨SQL Injectionã«ã¤ãã¦æªã ã«æ å ±ãå°ãªãã®ã«ããã¤ãã¦ããã®ã§ã ã¨ããã対çã°ã£ããã§ä½ãã§ãã¾ããã¼ã£ã¦ã®ã¯ã»ã¨ãã©ãã°ã¤ã³ã§ãã¾ããã¼ããããããããã å ·ä½çãªæ»ææ¹æ³ãããããã«ã¼ããã対çãã¦ãã ãã®äººå¤ããããªæ°ãããã®ã§ã¡ãã£ã¨æ»ææ¹æ³æ¸ãã¨ãã SQLã¤ã³ã¸ã§ã¯ã·ã§ã³ã£ã¦ãªã«ï¼ ã¢ããªã®ã¦ã¼ã¶å ¥åé åããSQLæãæ³¨å ¥ããã¦ãã¾ããã¨ã ãµã¼ãã§ããããã³ã¼ãæ¸ãã¦ãã¨ãuser_nameã«ã' or '1'='1';#ãã¨ãæ¸ããã¦ç´ æµãªãã¨ã«ãªãã(mysqlã®å ´å) String sql = "SELECT * FROM users WHERE = name = '"+user_name+"' AND password='"+user_password+"'"; ç°¡åã«è¨ãã¨ãéçºè ã®æå³ããªãSQLãã¦ã¼ã¶ã®å ¥åã«ãã£ã¦è¡ãæ»æææ³ã§ããã S
Downloadâ Old versions Tcl script http://reddog.s35.xrea.com/software/tksqlite-0.3.2.zip http://reddog.s35.xrea.com/software/tksqlite-0.4.1.zip http://reddog.s35.xrea.com/software/tksqlite-0.4.2.zip http://reddog.s35.xrea.com/software/tksqlite-0.4.3.zip http://reddog.s35.xrea.com/software/tksqlite-0.4.4.zip http://reddog.s35.xrea.com/software/tksqlite-0.4.5.zip http://reddog.s35.xrea.com/software/
Principales fonctionnalitées : Gestion de plusieurs base de données (Création, accès ou upload de base) Gestion des bases de donnèes attachées Création, modification et suppression de tables et indexes. Insertion, modification, suppression d'enregistrement dans ces tables Gestion des Vues, possibilités de créer une vue a partir d'une requête SELECT Gestion des Trigger Gestion des fonctions utilisa
PHPã®ããã®ADOdbã©ã¤ãã©ãª original document ADOdbé¢é£ææ¸ V4.62 2 Apr 2005 (c) 2000-2005 John Lim (jlim#natsoft.com) ãã®ã½ããã¦ã§ã¢ã¯BSDã¹ã¿ã¤ã«ã¨LGPLã使ããã¥ã¢ã«ã©ã¤ã»ã³ã¹ããã¦ãã¾ããããã¯ã³ã³ãã¤ã«ããã¦ææ権ã®ããå¸è²©è£½åã§ä½¿ãããã¨ãæå³ãã¦ãã¾ãã å½¹ã«ç«ã¤ADOdbã®ãªã³ã¯: Download  Other Docs åºæ ã¦ãã¼ã¯ãªç¹å¾´ ã©ããªãµãã«äººã ã¯ADOdbã使ã£ã¦ããã æ©è½è¦æã¨ãã°å ±å ã¤ã³ã¹ãã¼ã« æå°ã¤ã³ã¹ãã¼ã« ã³ã¼ãã®åæåã¨ãã¼ã¿ãã¼ã¹ã¸ã®æ¥ç¶ ãã¼ã¿ã½ã¼ã¹åï¼DSNï¼ Â æ¥ç¶ä¾ é«éADOdb - ãã¥ã¼ãã³ã°Tips å®å ¨ãªADOdbã®ãããã³ã°ã¨å¤æ´ PHP5ã®æ©è½ foreach i
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}