尊龙凯时人生就是博

mysqlÖÐanyµÄÓ÷¨

mysql ÖÐ any ÔËËã·ûÓÃÓÚ¼ì²é×ÓÅÌÎʵıí´ïʽµÄÇóֵЧ¹ûÊÇ·ñ¶ÔÅÌÎÊЧ¹ûÖеÄÈκÎÒ»Ðзµ»Ø true¡£ÏêϸÀ´Ëµ£¬any ÔËËã·ûÓÃÓÚ£º¼ì²éÅÌÎÊЧ¹ûÖÐÊÇ·ñ±£´æÖª×ãÌõ¼þµÄÐС£È·¶¨ÅÌÎÊЧ¹ûÖÐËùÓÐÐеÄÜöÝÍÊÇ·ñ¶¼Öª×ãÌض¨Ìõ¼þ¡£

MySQL ÖÐ ANY ÔËËã·ûµÄʹÓÃ

ʲôÊÇ ANY ÔËËã·û£¿

ANY ÔËËã·ûÓÃÓÚ¼ì²é¸ø¶¨±í´ïʽÊÇ·ñ¶ÔÅÌÎÊЧ¹ûÖеÄÈκÎÒ»ÐÐÇóֵΪ TRUE¡£

Óï·¨£º

ANY(subquery)

µÇ¼ºó¸´ÖÆ

ÆäÖУº

subquery ÊÇÒ»¸ö×ÓÅÌÎÊ£¬Ëü·µ»ØÒ»¸ö²¼¶ûÖµ£¨TRUE »ò FALSE£©¡£

Ó÷¨£º

ANY ÔËËã·ûͨ³£ÓÃÓÚÒÔϳ¡¾°£º

¼ì²éÅÌÎÊЧ¹ûÖÐÊÇ·ñ±£´æÖª×ãÌض¨Ìõ¼þµÄÐС£

È·¶¨ÅÌÎÊЧ¹ûÖÐËùÓÐÐеÄÜöÝÍÊÇ·ñ¶¼Öª×ãÌض¨Ìõ¼þ¡£

ÏêϸÓ÷¨Ê¾Àý£º

¼ì²éÊÇ·ñ±£´æÖª×ãÌõ¼þµÄÐУº

SELECT * FROM table
WHERE ANY(field > 10);

µÇ¼ºó¸´ÖÆ

ÈôÊÇ table ÖÐÓÐÈκÎÐÐµÄ field Öµ´óÓÚ 10£¬Ôò´ËÅÌÎʽ«·µ»ØËùÓÐÕâЩÐС£

È·¶¨ËùÓÐÐÐÊÇ·ñ¶¼Öª×ãÌõ¼þ£º

SELECT * FROM table
WHERE NOT ANY(field <p>ÈôÊÇ table ÖеÄËùÓÐÐÐµÄ field Öµ¶¼´óÓÚ»ò¼´ÊÇ 10£¬Ôò´ËÅÌÎʽ«·µ»ØËùÓÐÕâЩÐС£²»È»£¬Ëü½«·µ»Ø¿ÕЧ¹û¼¯¡£</p><p><strong>×¢ÖØ£º</strong></p>

µÇ¼ºó¸´ÖÆ

ANY ÔËËã·û¶Ô NULL ÖµÇóֵΪ TRUE¡£Òò´Ë£¬ÔÚʹÓà ANY ÔËËã·ûʱ£¬±ØÐèСÐÄ´¦Àí NULL Öµ¡£

ANY ÔËËã·ûÓë ALL ÔËËã·ûÏà·´¡£ALL ÔËËã·û¼ì²é¸ø¶¨±í´ïʽÊÇ·ñ¶ÔÅÌÎÊЧ¹ûÖеÄËùÓÐÐÐÇóֵΪ TRUE¡£

ÒÔÉϾÍÊÇmysqlÖÐanyµÄÓ÷¨µÄÏêϸÄÚÈÝ£¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí£¬°æȨÕùÒéÓë±¾Õ¾Î޹أ¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í尊龙凯时人生就是博ÂËÓÍ»úÍø¹Ù·½Ì¬¶È£¬Çë¶ÁÕß½ö×ö²Î¿¼¡£±¾ÎĽӴýתÔØ£¬×ªÔØÇë˵Ã÷À´ÓÉ¡£ÈôÄúÒÔΪ±¾ÎÄÇÖÕ¼ÁËÄúµÄ°æȨÐÅÏ¢£¬»òÄú·¢Ã÷¸ÃÄÚÈÝÓÐÈκÎÉæ¼°ÓÐÎ¥¹«µÂ¡¢Ã°·¸Ö´·¨µÈÎ¥·¨ÐÅÏ¢£¬ÇëÄúÁ¬Ã¦ÁªÏµ尊龙凯时人生就是博ʵʱÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ尊龙凯时人生就是博

18523999891

¿É΢ÐÅÔÚÏß×Éѯ

ÊÂÇéʱ¼ä£ºÖÜÒ»ÖÁÖÜÎ壬9:30-18:30£¬½ÚãåÈÕÐÝÏ¢

QR code
sitemap¡¢ÍøÕ¾µØͼ