mysqlÖв»¼´ÊÇÔõôд
mysql ÖÐÌåÏÖ²»¼´ÊÇÅÌÎÊÌõ¼þ£ºÊ¹Óà != ÔËËã·ûÌåÏÖ²»¼´ÊÇ¡£ÀýÈ磺select * from table_name where column_name != value;
MySQL ÖÐÌåÏÖ²»¼´ÊÇ
ÅÌÎÊÌõ¼þ£º
ÔÚ MySQL ÖУ¬Ê¹Óà != ÌåÏÖ²»¼´ÊÇ¡£
ʾÀý£º
SELECT * FROM table_name WHERE column_name != value;
µÇ¼ºó¸´ÖÆ
Ïêϸ˵Ã÷£º
!= ÔËËã·û½ÏÁ¿Á½¸ö±í´ïʽ£¬²¢·µ»ØÒ»¸ö²¼¶ûÖµ£¨TRUE »ò FALSE£©¡£ÈôÊÇÁ½¸ö±í´ïʽ²»Ïàͬ£¬Ôò·µ»Ø TRUE£»²»È»£¬·µ»Ø FALSE¡£
ÆäËû²»¼´ÊÇÔËËã·û£º
³ýÁË != ÔËËã·ûÍ⣬ÉÐÓÐһЩÆäËû²»¼´ÊÇÔËËã·û£º
£ºÓë != Ïàͬ£¬ÌåÏÖ²»¼´ÊÇ¡£
NOT£º·ñ¶¨ÔËËã·û¡£µ±ÓëÒ»¸ö½ÏÁ¿ÔËËã·ûÍŽáʹÓÃʱ£¬½«·´×ªÆäЧ¹û£¨ÀýÈ磬NOT = ÌåÏÖ¼´ÊÇ£©¡£
×¢ÖØ£º
!= ºÍ ÔËËã·û¾ßÓÐÏàͬµÄÓÅÏȼ¶¡£
ÔÚijЩÇéÐÎÏ£¬¿ÉÒÔʹÓà ¶ø²»ÊÇ != À´Ìá¸ß´úÂëµÄ¿É¶ÁÐÔ¡£
ÒÔÉϾÍÊÇmysqlÖв»¼´ÊÇÔõôдµÄÏêϸÄÚÈÝ£¬¸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·½Á¢³¡£¬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¡£