try:
select * from a where a2<2002 and a3>2002
union
selec * from a where a2 in (select a2-1 from a where a2<2002 and a3>2002);
select * from a where a2<2002 and a3>2002
union
selec * from a where a2 in (select a2-1 from a where a2<2002 and a3>2002);
解决方案 »
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