我必须选择列的最小和最大年份并定义剩余年份。可以使用sql查询本身来完成。我不想使用PHP代码(这将是最后一个选项)
Give the range from (select min(Tax filing), max(Tax filing) from tax);
//Simply writing "Define the range from(nested query)".. please give some query tags which apply..
所以它应该自动定义范围。可以使用任何查询来完成吗?
答案 0 :(得分:2)
select somegunk from sometable
where somedate between
(select max(year(someotherdate)) from sometable)
and (select min(year(someotherdate)) from sometable);
答案 1 :(得分:0)
如果要列出最小年和最大年之间的所有年份,则应执行以下操作:
SELECT yearCol
from yourTable
where yearCol between
(select min(yearCol) from yourTable)
and
(select max(yearCol)FROM yourTable);
您需要在yourTable中记录所有年份的记录。
答案 2 :(得分:0)
您可以创建一个序列表,在其中插入所有可能的值:
create table sequence (id integer not null auto_increment primary key) auto_increment=1900;
insert into sequence values(null); -- x times
并使用此查询:
select * from sequence where id between (select min(Tax_filing) from tax) and (select max(Tax_filing) from tax);