查詢，刪除，插入，查詢，排序sql語句
我們這裡提供了查詢，刪除，插入，查詢，排序 總數 求和 平均 最大 最小sql語句哦。
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的語法很精妙，查資料!
排序：select * from table1 order by field1,field2 [desc]
總數：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
