declare

--第一種
declare @i int
set @i= (select COUNT(*) from t8)
select @i
--第二種
declare @i int
select @i= COUNT(*) from t8
print @i

if else

declare @num int
select @num=COUNT(*) from t8
if(@num>2)
    begin
        print ‘大於2‘
    end
else    
    begin    
        print ‘小於2‘
    end

while

--
 
輸出0-100
declare @i int
set @i=0
while(@i<=100)
begin
    print @i
    set @i=@i+ 1
end

SQL基本操作——declare if lese while