表名:A
时间字段:ddatetime(datetime类型)
查询2003-2004年6月7日-7月8日数据。
select * from A where (
extract(year from ddatetime) between 2003 and 2004)
and (
extract(month from ddatetime) between 6 and 7)
and (
extract(day from ddatetime) between 6 and 7)
extract只能取到日。小时，或者到秒，需要to_char。
查询2003-2004年6月7日-7月8日12时到20时数据。
select * from A where (extract(year from ddatetime) between 2003 and 2004)
and (extract(month from ddatetime) between 6 and 7)
and (extract(day from ddatetime) between 6 and 7) and (to_char(ddatetime,'HH24') between 12 and 20)
以上查询在oracle可运行。
posted on 2009-01-22 22:21
长春语林科技 阅读(1285)
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