在游戲開發(fā),或者web開發(fā)過程中,我們常常需要將符合格式的數(shù)據(jù),導(dǎo)入到我們自己的mysql數(shù)據(jù)庫(kù)中,這樣既方便,有省事.可以分工明確,你只需要提供相應(yīng)的規(guī)范,策劃或者其他人員按照你的文
刪除b表中與a表不同的記錄 delete from b where not exists( select * from a where a.id=b.id and a. name =b. name ) delete from b where b.id not in ( select a.id from a) or b. name not in ( select a. name from a) delete from v9_pho
update v9_hits SET hitsid = REPLACE(hitsid,c-12-,c-13-) where 1 = ( case when(select COUNT(*) from v9_photo where id=replace(hitsid,c-12-,))0 then 1 else 0 end) updatev9_hitsSEThitsid=REPLACE(hitsid,c-12-,c-13-) fromv9_hits,v9_photowhereid=
update v9_hits SET hitsid = REPLACE(hitsid,c-12-,c-13-) where 1 = ( case w...
MySQL語句如何實(shí)現(xiàn)從數(shù)據(jù)庫(kù)表中查詢隨機(jī)數(shù)據(jù)的記錄 1. Oracle,隨機(jī)查詢20條 sel...
mysql查詢相關(guān)文章或相關(guān)資源的代碼 select * from ***_ecms where classid=0 a...
在mysql中in可以包括指定的數(shù)字,而find_in_set()用于特定的數(shù)據(jù)類型,下面我來...
風(fēng)信建站要開發(fā)客戶項(xiàng)目的過程中,遇到提供客戶的原始數(shù)據(jù),需要對(duì)整個(gè)數(shù)據(jù)庫(kù)中...
mysql查詢?nèi)砟匙侄沃底畲蟮?0條數(shù)據(jù)記錄,sql語句的寫法: select * from 表...
mysql如何查詢數(shù)據(jù)庫(kù)中10-20條的數(shù)據(jù),mysql代碼如下: select * from table li...
風(fēng)信建站在實(shí)際的項(xiàng)目開發(fā)中,需要針對(duì)數(shù)據(jù)庫(kù)表中某一個(gè)字段進(jìn)行多條件查詢 字...