SQLite FAQÖÐÎİæ
1) ÈçºÎ´´½¨×ÔÔö×ֶΣ¿
¼òµ¥µÄ»Ø´ð£ºÒ»¸öÉùÃ÷Ϊ INTEGER PRIMARY KEY µÄ×ֶν«×Ô¶¯Ôö¼Ó¡£
ÕâÀïÊÇÏêϸµÄ´ð°¸£º ´Ó SQLite µÄ 2.3.4 °æ±¾¿ªÊ¼£¬Èç¹ûÄ㽫һ¸ö±íÖеÄÒ»¸ö×Ö¶ÎÉùÃ÷Ϊ INTEGER PRIMARY
KEY£¬ÄÇôÎÞÂÛÄãºÎʱÏò¸Ã±íµÄ¸Ã×ֶβåÈëÒ»¸ö NULL Öµ£¬Õâ¸ö NULL Öµ½«×Ô¶¯±»¸ü»»Îª±È±íÖиÃ×Ö¶ÎËùÓÐÐеÄ×î´óÖµ´ó
1 µÄÕûÊý£»Èç¹û±íΪ¿Õ£¬ÄÇô½«±»¸ü»»Îª 1¡£±ÈÈ磬¼ÙÉèÄãÓÐÕâÑùµÄÒ»ÕÅÊý¾Ý±í:
CREATE TABLE t1(
a INTEGER PRIMARY KEY,
b INTEGER
);
ÔÚÕâÕÅÊý¾Ý±íÀÉùÃ÷
INSERT INTO t1 VALUES(NULL,123);
ÔÚÂß¼ÒâÒåÉϵȼÛÓÚ£º
INSERT INTO t1 VALUES((SELECT max(a) from t1)+1,123);
Ò»¸öеÄAPIº¯Êý sqlite3_last_insert_rowid()
·µ»Ø×î½üµÄ²åÈë²Ù×÷µÄÕûÐμü
×¢ÒâÕâ¸öÕûÐͼüʼÖÕ±È֮ǰ²åÈë±íÖеÄ×îºóÒ»¸ö¼ü´ó1¡£Ð¼üÏà¶ÔÓÚ±íÖеÄÒÑÓмüÀ´ËµÊÇΨһµÄ£¬
µ«Ëü¿ÉÄÜÓë֮ǰ´Ó±íÖÐɾ³ýµÄ¼üÖµÖØµþ¡£ÒªÊ¼Öյõ½ÔÚÕû¸ö±íÖÐΨһµÄ¼ü£¬ÔÚINTEGER PRIMARY
KEYµÄÉùÃ÷֮ǰ¼Ó¹Ø¼ü´ÊAUTOINCREMENT.ÕâÑù±»Ñ¡µÄ¼ü½«×ÜÊDZȱíÖÐÒÑ´æÔÚµÄ×î´ó¼ü´ó1¡£Èô¿ÉÄܵÄ
×î´ó¼üÒÑ´æÔÚÓÚ±íÖУ¬INSERT²Ù×÷½«Ê§°Ü²¢·µ»ØÒ»¸öSQLITE_FULL´íÎóÂë.
(2) SQLite Ö§³ÖÄÄЩÊý¾ÝÀàÐÍ£¿
²Î¼û http://www.sqlite.org/datatype3.html
.
(3) ΪʲôÄÜÏò SQLite Êý¾Ý¿âµÄÕûÐÍ×Ö¶ÎÖвåÈë×Ö·û´®£¿
ÕâÊÇÒ»¸ö¹¦ÄÜ£¬²»ÊÇÒ»¸ö bug¡£Äã¿ÉÒÔÔÚÈκÎ×Ö¶ÎÖзÅÈκÎÐÅÏ¢£¬¶ø²»ÓùÜ×Ö¶ÎÉùÃ÷ΪʲôÀàÐÍ¡£
Äã¿ÉÒÔÍùÕûÐÍ×Ö¶ÎÖвåÈëÈÎÒⳤ¶ÈµÄ×Ö·û´®£¬»òÕßÍù²¼¶û×Ö¶ÎÖвåÈ븡µãÊý£¬»òÕßÍù×Ö·û×Ö¶ÎÖÐ ²åÈëÈÕÆÚ¡£ÔÚ CREATE
TABLE ÃüÁîÖÐÄãÖ¸¶¨¸øÕâ¸ö×ֶεÄÊý¾ÝÀàÐͲ»»áÏÞÖÆ²åÈëÕâ¸ö×ֶεÄÊý¾Ý¡£
ËùÓеÄ×ֶοÉÒÔ²åÈëÈÎÒⳤ¶ÈµÄ×Ö·û´®¡£µ«¶ÔÓÚ INTEGER PRIMARY KEY ×Ö¶ÎÀýÍâ¡£ÕâÖÖ×Ö¶ÎÖ»ÄÜ
´æ·ÅÒ»¸ö64λµÄÕûÊý£¬·ñÔò»á³ö´í¡£
µ«SQLite»áĬÈÏÄãÏ£ÍûʹÓÃÉùÃ÷µÄ×Ö¶ÎÀàÐÍ¡£ËùÒÔ£¬±ÈÈçÄãÏ£ÍûÔÚÒ»¸öÉùÃ÷ΪINTEGERµÄ×Ö¶Î
ÖвåÈëÒ»¸ö×Ö·û´®£¬SQLite»áÊÔͼ½«Æäת»»ÎªÒ»¸öÕûÊý¡£Èç¹ûת»»³É¹¦£¬ÄÇôÕûÊý½«±»²åÈ룬·ñ
Ôò²åÈë×Ö·û´®£¬ÕâÖÖÌØÐÔÓÐʱ±»³Æ×÷type or column
affinity
.
(4) Ϊʲô SQLite ÈÏΪ±í´ïʽ '0'=='00' ÎªÕæ£¿
ÔÚ 2.7.0 Ö®ºó£¬±í´ïʽ²»³ÉÁ¢¡£²Î¼ûÎĵµ datatypes in
SQLite version 3
(5) Ϊʲô SQLite ²»ÔÊÐíÔÚͬһÕűíÀïʹÓà '0' ºÍ '0.0' ×÷ΪÁ½¸ö²»Í¬µÄÐеÄÖ÷¼ü£¿
ÄãµÄÖ÷¼üÒ»¶¨ÊÇÊýÖµÀàÐ͵쬰ÑÀàÐ͸ÄΪ TEXT
Ïà¹ØÎĵµ£º
2010ÄêSQLiteѧϰ±Ê¼ÇÖ®Ò»
Ò»£® ÈçºÎ»ñÈ¡SQLite×îа汾
¹Ù·½Õ¾µã£ºhttp://www.sqlite.org/
´Óhttp://www.sqlite.org/ÍøÕ¾µÄDownloadÒ³Ãæ»ñÈ¡
¼´ÈçÏÂÒ³ÃæÏÂÔØ
http://www.sqlite.org/download.html
¶þ£®WindowsϵÄSQLiteµÄÔ´´úÂëÊÇÄĸöÈí¼þÑ¹Ë ......
»¹Êdzõ̽£¬×öµÄÏîĿҪÓõ½ÇáÇɵı¾µØÊý¾Ý¿â£¬ÓÚÊÇÕÒÁË sqlite 3 ÊÔÓÃÖ®£¬»¹²»´í£¬¹»ÇáÇÉ¡£
ÉÏÕâ¶ùÈ¥ÏÂÔØ³ÌÐòºÍ²é¿´Îĵµ£º http://www.sqlite.org/download.html
Õâ»Ø¿ª·¢ÓõÄÊÇ C#£¬ÓÚÊÇÕÒÁ˸ö.NETµÄ¿â Finisar.SQLite £¬µ½Õâ¶ùÈ¥ÔØ http://adodotnetsqlite.sourceforge.net/
Òª¼ÇµÄÒ²²»ÊÇʲô´ó²»Á˵Ķ«Î÷£¬Ê¾ÀýÍøÕ¾É϶ ......
sqlite3 *db;
sqlite3_stmt *stat;
char
*zErrMsg = 0;
char
temp[256], FileRoot[256];
char
buffer2[1024]="0";
sprintf(temp, _T("%s"), _T("utf.db")) ......
......
ÎÒÏÖÔÚʹÓõÄÊÇDatalogic µÄmemorɨÃèÆ÷(intel XScale PXA255@200MHz,ϵͳÄÚ´æ 64M,ϵͳÉÁ´æ
128M)£¬²Ù×÷ϵͳΪWinCE
5.0,Êý¾Ý¿âΪSqlite3£¬ÔÚ.net»·¾³ÏÂÃæÓÐûÓпÉÄÚ½«Ò»¸ö20ÍòÐÐÊý¾ÝµÄtxtÎļþ¶Á³ö²¢Ð´µ½SqliteÊý¾Ý¿âÖÐ?
ÎÒÏÖÔÚµÄ×ö·¨ÊÇ£ºÖðÐжÁ³öÎļþÄÚÈÝ£¬·Ö¸îÊý¾Ýºó×÷Ϊ²ÎÊý£¬ÓÃdc.Parameters.add()·½·¨¼ÓÈëSQLiteC ......