-- 1.定義變量
declare @n int,@dateTime varchar(255),@ymd varchar(255)
-- 2.設(shè)置變量
set @n=1
set @dateTime='2016-'
-- 3.設(shè)置循環(huán)1次數(shù)
while @n<=12
begin
        -- 4.判斷月份(convert(varchar,@n)是將int轉(zhuǎn)換成varchar類型)
        if @n <10
                begin
                        set @ymd = @dateTime+'0'+convert(varchar,@n)+'%'
                end
     else
                begin
                        set @ymd = @dateTime+convert(varchar,@n)+'%'
                end
        -- 5.循環(huán)標(biāo)志+1
        set @n = @n+1
        -- 6.打印變量值
        print(@ymd)
        -- 7.執(zhí)行sql語句
        select * from user where addTime like @ymd;
end