Question

求DB2数据库查询本月内所有数据，哪位大神知道这样的SQL应该怎么写？

例如T表中有个交易日期date。。我想统计本月内所有交易的明细

Answer 1

SELECT * FROM T WHERE YEAR(DATE) = YEAR(CURREN T DATE) AND MONTH(DATE) = MONTH(CURRENT DATE);
如果数据量太大，这个可能有效率问题建议用下面的
SELECT * FROM T WHERE DATE BETWEEN CURRENT DATE - (DAY(CURRENT DATE -1) AND CURRENT DATE;

追问

SELECT * FROM T WHERE DATE BETWEEN CURRENT DATE - (DAY(CURRENT DATE -1) AND CURRENT DATE;

你这个SQL还少了），请问应该加哪？

追答

SELECT * FROM T
WHERE DATE BETWEEN CURRENT DATE - (DAY(CURRENT DATE) -1) DAYS
AND CURRENT DATE;

Answer 2

select * from 表
where date>=本月首日 and date<下月首日
这样效率最高，可以正常使用date列的索引

Answer 3

select

*
from
t
where
year(current timestamp)=year(date)
and
month(current timestamp)=month(date);