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AUTOINCREMENTã‚’è¨å®šã™ã‚‹å ´åˆã¨ã—ãªã„å ´åˆã®é•ã„
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monnalisasmile 2014/08/26
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1. åˆã‚ã« (æ›¸ãã‹ã‘) SQLite ã¯ RDMS (é–¢ä¿‚ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ç®¡ç†ã‚·ã‚¹ãƒ†ãƒ ) ã®ä¸€ç¨®ã§ã™ã€‚ é€šå¸¸ã® RDMS ã¨ç•°ãªã‚Šé¢å€’ãªã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—ãŒä¸è¦ã§ã€ç°¡å˜ã«åˆ©ç”¨ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ é€šå¸¸ã®ãƒ•ã‚¡ã‚¤ãƒ«ä¸¦ã«ç°¡å˜ã«æ‰±ãˆã‚‹ã®ã§ã€ ä»Šã¾ã§ã¯ãƒ†ã‚ã‚¹ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ãªã©ã«ä¿å˜ã—ã¦ã„ãŸãƒ‡ãƒ¼ã‚¿ã¯ sqlite ã«ä¿å˜ã™ã‚‹ã‚ˆã†ã«ã™ã‚‹ã¨ä¾¿åˆ©ã§ã™ã€‚ 2. Python ã‹ã‚‰ SQLite ã‚’ä½¿ã† ã‚‚ã¡ã‚ã‚“ã€Python ã‹ã‚‰ã‚‚ SQLite ã‚’åˆ©ç”¨ã§ãã¾ã™ã€‚ Python 2.5 ã‹ã‚‰ sqlite3 ãŒ build-in package ã¨ã—ã¦é…å¸ƒã•ã‚Œã¦ã„ã‚‹ã®ã§ã€ ã™ãã«ä½¿ã†ã“ã¨ãŒã§ãã¾ã™ã€‚ æ¬¡ã®ä¾‹ã®ã‚ˆã†ã«ã€ãƒ‡ãƒ¼ã‚¿ãƒ•ã‚¡ã‚¤ãƒ«ã« connect ã™ã‚‹ã ã‘ã§ã€ä½¿ã†ã“ã¨ãŒã§ãã¾ã™ã€‚ ãƒ‡ãƒ¼ã‚¿ãƒ•ã‚¡ã‚¤ãƒ«ã¯ã€ å˜åœ¨ã—ãªã‘ã‚Œã°è‡ªå‹•çš„ã«ä½œæˆã•ã‚Œã€ å˜åœ¨ã™ã‚Œã°ã€ãã‚ŒãŒé–‹ã‹ã‚Œã¾ã™ã€‚ ã¾ãŸã€ãƒ‡ãƒ¼ã‚¿ã®ä¿å˜ã¯ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã® co
monnalisasmile 2013/07/12
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SQLite3ã‚’ä½¿ç”¨ã™ã‚‹ - Python Tips
è»½é‡ãƒ»é«˜é€Ÿãªãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹SQLiteã‚’Pythonã‹ã‚‰æ‰±ã†ãŸã‚ã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã€‚ ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« Python2.5ã‹ã‚‰æ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«å…¥ã‚Šã¾ã—ãŸã€‚ ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ä½œæ¥ã¯ä¸è¦ã§ã™ã€‚ ä½¿ç”¨æ–¹æ³• sqlite3ã‚’ã‚¤ãƒ³ãƒãƒ¼ãƒˆã™ã‚‹ #!python2.6 # -*- coding: utf-8 -*- import sqlite3 ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’ä½œæˆã™ã‚‹ con = sqlite3.connect("data.db") ãƒ•ã‚¡ã‚¤ãƒ«ãŒã™ã§ã«å˜åœ¨ã™ã‚‹ã¨ãã¯ãƒ•ã‚¡ã‚¤ãƒ«ã‚’é–‹ãã€‚ ãƒ•ã‚¡ã‚¤ãƒ«ãŒãªã„ã¨ãã¯æ–°ã—ã„ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’ä½œæˆã™ã‚‹ã€‚ isolation_levelã«Noneã‚’æŒ‡å®šã™ã‚‹ã¨ã€è‡ªå‹•ã‚³ãƒŸãƒƒãƒˆãƒ¢ãƒ¼ãƒ‰ã«ãªã‚Šã¾ã™ã€‚ con = sqlite3.connect('temp.db', isolation_level=None) ç‰¹åˆ¥ãªåå‰ã§ã‚ã‚‹ ":memory:" ã‚’ä½¿ã†ã¨RAMä¸Šã«ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’ä½œã‚‹ã“ã¨ã‚‚ã§ãã¾ã™ã€‚ c
monnalisasmile 2013/07/12
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ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã® SQLite ã®ä½¿ã„æ–¹ã«ã¤ã„ã¦è§£èª¬ã—ã¾ã™ã€‚ SQLite ã¯ã‚µãƒ¼ãƒã¨ã—ã¦å‹•ä½œã•ã›ã‚‹ã®ã§ã¯ãªãå˜ç‹¬ã®ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¨ã—ã¦å‹•ä½œã•ã›ã‚‹ã“ã¨ãŒå¯èƒ½ã§ã™ã€‚ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã‚‚ç°¡å˜ãªä¸Šã«éžå¸¸ã«ã‚³ãƒ³ãƒ‘ã‚¯ãƒˆãªãŸã‚ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¨ä¸€ç·’ã«é…å¸ƒã™ã‚‹ã¨ã„ã£ãŸåˆ©ç”¨ã‚‚æ•°å¤šãã•ã‚Œã¦ã„ã¾ã™ã€‚ã“ã“ã§ã¯ SQLite ã‚’ä½¿ã£ã¦ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚„ãƒ†ãƒ¼ãƒ–ãƒ«ã®ä½œæˆæ–¹æ³•ã€ãã—ã¦ãƒ‡ãƒ¼ã‚¿ã‚’è¿½åŠ ã—ãŸã‚Šå–å¾—ã—ãŸã‚Šã™ã‚‹æ–¹æ³•ã«ã¤ã„ã¦ä¸€ã¤ä¸€ã¤è§£èª¬ã—ã¦ã„ãã¾ã™ã€‚
monnalisasmile 2013/07/12
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Datatypes In SQLite
1. Datatypes In SQLite Most SQL database engines (every SQL database engine other than SQLite, as far as we know) uses static, rigid typing. With static typing, the datatype of a value is determined by its container - the particular column in which the value is stored. SQLite uses a more general dynamic type system. In SQLite, the datatype of a value is associated with the value itself, not with i
monnalisasmile 2013/07/11
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