sql语句中嵌套2层循环

declare @year int
declare @month int
set @year=2008

while(@year<=2011)
begin
set @month=1
while(@month<=12)
begin
insert into tableName values(@year,@month)
set @month=@month+1
end
set @year=@year+1
end

把tablename换成你的表的名称。