ACCESS的话
select * from table where date1<#2008-1-20# and date2>#2007-8-30#
MYSQL的话
select * from table where date1<\'2008-1-20\' and date2>\'2007-3-30\'
也可以
select * from table where date1 between \'2008-1-20\' and \'2007-3-30\'
其中date1,date2都是日期类型的字段