一個(gè)無(wú)需安裝office 或是access就能操作mdb數(shù)據(jù)庫(kù)的工具。
更是讓一些對(duì)sql語(yǔ)句不熟的朋友的一個(gè)幫助。
幾個(gè)簡(jiǎn)單的基本的sql語(yǔ)句
選擇:select * from table1 where 范圍
插入:insert into table1(field1,field2) values(value1,value2)
刪除:delete from table1 where 范圍
更新:update table1 set field1=value1 where 范圍
查找:select * from table1 where field1 like ’%value1%’ ---like的語(yǔ)法很精妙,查資料!
排序:select * from table1 order by field1,field2 [desc]
總數(shù):select count as totalcount from table1
求和:select sum(field1) as sumvalue from table1
平均:select avg(field1) as avgvalue from table1
最大:select max(field1) as maxvalue from table1
最小:select min(field1) as minvalue from table1
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