尊龙凯时人生就是搏

sqlÖÐdropÓ÷¨

sql ÖÐµÄ drop Ó÷¨¿Éɾ³ý¹¤¾ß£¬°üÀ¨±í¡¢Ë÷Òý¡¢ÊÓͼ¡¢´æ´¢Àú³ÌºÍ´¥·¢Æ÷¡£ÆäÓ﷨Ϊ£ºdrop [object type] object_name¡£object_name ΪҪɾ³ýµÄ¹¤¾ßµÄÃû³Æ£¬ÆäÖÐ object_type Ϊ¹¤¾ßÀàÐÍ£¬ÀýÈç table¡¢index¡¢view µÈ¡£

SQL ÖÐµÄ DROP Ó÷¨

DROP ÏÂÁî¸ÅÊö

DROP ÏÂÁîÓÃÓÚÔÚ SQL Êý¾Ý¿âÖÐɾ³ý¹¤¾ß£¬ÀýÈç±í¡¢Ë÷Òý¡¢ÊÓͼ¡¢´æ´¢Àú³ÌºÍ´¥·¢Æ÷¡£

Óï·¨

DROP [OBJECT TYPE] object_name;

µÇ¼ºó¸´ÖÆ

ÆäÖУº

OBJECT TYPE Ö¸¶¨ÒªÉ¾³ýµÄ¹¤¾ßÀàÐÍ£¬ÀýÈç TABLE¡¢INDEX¡¢VIEW µÈ¡£

object_name ÊÇҪɾ³ýµÄ¹¤¾ßµÄÃû³Æ¡£

Ó÷¨

DROP TABLE

ɾ³ý±í¼°ÆäËùÓÐÊý¾ÝºÍË÷Òý¡£

DROP TABLE table_name;

µÇ¼ºó¸´ÖÆ

DROP INDEX

ɾ³ýË÷Òý¡£

DROP INDEX index_name;

µÇ¼ºó¸´ÖÆ

DROP VIEW

ɾ³ýÊÓͼ¡£

DROP VIEW view_name;

µÇ¼ºó¸´ÖÆ

DROP PROCEDURE

ɾ³ý´æ´¢Àú³Ì¡£

DROP PROCEDURE procedure_name;

µÇ¼ºó¸´ÖÆ

DROP TRIGGER

ɾ³ý´¥·¢Æ÷¡£

DROP TRIGGER trigger_name;

µÇ¼ºó¸´ÖÆ

×¢ÖØÊÂÏî

ÔÚɾ³ý¹¤¾ß֮ǰ£¬È·±£Äú²»ÔÙÐèÒªËü¡£

ɾ³ý±íʱ£¬Ò²»áɾ³ý±íÖеÄËùÓÐÊý¾Ý¡£

DROP ÏÂÁî²»¿ÉÄ棬һµ©Ö´ÐУ¬ÔòÎÞ·¨»Ö¸´ÒÑɾ³ýµÄ¹¤¾ß¡£

ÈôÊǹ¤¾ßÓÐÍâ¼üÔ¼Êø£¬Ôò±ØÐèÏÈɾ³ýÍâ¼ü»òÐÞ¸ÄÍâ¼üÒýÓá£

ÔÚɾ³ýÊÓͼ¡¢´æ´¢Àú³Ì»ò´¥·¢Æ÷ʱ£¬»¹±ØÐèɾ³ý¶ÔËüÃǵÄÒÀÀµÏî¡£

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

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí£¬°æȨÕùÒéÓë±¾Õ¾Î޹أ¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í尊龙凯时人生就是搏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尊龙凯时人生就是搏ʵʱÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ尊龙凯时人生就是搏

18523999891

¿É΢ÐÅÔÚÏß×Éѯ

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

QR code
sitemap¡¢ÍøÕ¾µØͼ