返回所有字段: select * from table1
select * from table1
返回指定字段: select field1, field2, field3, ... from tablename
select field1, field2, field3, ... from tablename
设定条件: select field1, field2, field3, ... from tablename where ...
select field1, field2, field3, ... from tablename where ...
相关文章推荐: