鍦?SQL 涓疄鐜版潯浠剁瓫閫夌粍鍚堬紝涓昏渚濋潬 WHERE 瀛愬彞閰嶅悎閫昏緫杩愮畻绗︽潵瀹屾垚銆傞€氳繃鍚堢悊浣跨敤 AND銆丱R 鍜?NOT锛屽彲浠ョ伒娲诲湴缁勫悎澶氫釜绛涢€夋潯浠讹紝绮剧‘鑾峰彇鎵€闇€鏁版嵁銆?/p> 浣跨敤 AND 缁勫悎澶氫釜鏉′欢
褰撻渶瑕佸悓鏃舵弧瓒冲涓潯浠舵椂锛屼娇鐢?AND 杩炴帴銆傚彧鏈夋墍鏈夋潯浠堕兘涓虹湡锛岃褰曟墠浼氳閫変腑銆?/p> 渚嬪锛屾煡璇㈠勾榫勫ぇ浜?30 涓旀墍鍦ㄥ煄甯備负鈥滃寳浜€濈殑鍛樺伐锛?/font>
SELECT * FROM employees WHERE age > 30 AND city = '鍖椾含';
浣跨敤 OR 婊¤冻浠讳竴鏉′欢濡傛灉鍙渶婊¤冻鍏朵腑涓€涓潯浠跺嵆鍙紝浣跨敤 OR銆傚彧瑕佷换鎰忎竴涓潯浠舵垚绔嬶紝璁板綍灏变細琚繑鍥炪€?/p> 姣斿锛屾煡鎵捐亴浣嶆槸鈥滅粡鐞嗏€濇垨钖祫楂樹簬 8000 鐨勫憳宸ワ細
SELECT * FROM employees WHERE position = '缁忕悊' OR salary > 8000;
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缁撳悎鎷彿鎺у埗浼樺厛绾?/h3>
褰?AND 鍜?OR 娣风敤鏃讹紝寤鸿浣跨敤鎷彿鏄庣‘閫昏緫椤哄簭锛岄伩鍏嶆涔夈€?/p> 渚嬪锛岀瓫閫夛紙鍦ㄥ寳浜垨涓婃捣锛変笖骞撮緞澶т簬 25 鐨勫憳宸ワ細
SELECT * FROM employees WHERE (city = '鍖椾含' OR city = '涓婃捣') AND age > 25;
浣跨敤 NOT 鎺掗櫎鐗瑰畾鏉′欢NOT 鐢ㄤ簬鍙栧弽鏌愪釜鏉′欢銆傚父鐢ㄤ簬鎺掗櫎涓嶇鍚堣姹傜殑鏁版嵁銆?/p> 濡傦細鏌ヨ闈炩€滃疄涔犵敓鈥濅笖鐘舵€佹湭娉ㄩ攢鐨勭敤鎴凤細
SELECT * FROM users WHERE NOT position = '瀹炰範鐢? AND status != 'disabled';
鍩烘湰涓婂氨杩欎簺銆傛帉鎻″ソ閫昏緫杩愮畻绗﹀拰鎷彿鐨勬惌閰嶏紝灏辫兘楂樻晥瀹炵幇澶嶆潅鐨勬潯浠剁瓫閫夌粍鍚堛€傛敞鎰忎功鍐欐竻鏅帮紝閬垮厤鍥犱紭鍏堢骇闂瀵艰嚧缁撴灉鍋忓樊銆?/p>
浠ヤ笂灏辨槸濡備綍鍦?SQL 涓疄鐜版潯浠剁瓫閫夌粍鍚堬紵鐨勮缁嗗唴瀹癸紝鏇村璇峰叧娉╬hp涓枃缃戝叾瀹冪浉鍏虫枃绔狅紒
鐩稿叧鏍囩锛?/span> 涓婃捣 sql 杩愮畻绗?/a> 閫昏緫杩愮畻绗?/a> select position 澶у閮藉湪鐪嬶細 sql鍑芥暟濡備綍鍚戜笂鍙栨暣
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