一条语句搞定九九乘法表

select
max(case when a < 1 then '' else '1*'+cast(a as varchar)+'='+cast(a*1 as varchar) end) as [1],
max(case when a < 2 then '' else '2*'+cast(a as varchar)+'='+cast(a*2 as varchar) end) as [2],
max(case when a < 3 then '' else '3*'+cast(a as varchar)+'='+cast(a*3 as varchar) end) as [3],
max(case when a < 4 then '' else '4*'+cast(a as varchar)+'='+cast(a*4 as varchar) end) as [4],
max(case when a < 5 then '' else '5*'+cast(a as varchar)+'='+cast(a*5 as varchar) end) as [5],
max(case when a < 6 then '' else '6*'+cast(a as varchar)+'='+cast(a*6 as varchar) end) as [6],
max(case when a < 7 then '' else '7*'+cast(a as varchar)+'='+cast(a*7 as varchar) end) as [7],
max(case when a < 8 then '' else '8*'+cast(a as varchar)+'='+cast(a*8 as varchar) end) as [8],
max(case when a < 9 then '' else '9*'+cast(a as varchar)+'='+cast(a*9 as varchar) end) as [9]
from (
select 1 as a
union all
select 2
union all
select 3
union all
select 4
union all
select 5
union all
select 6
union all
select 7
union all
select 8
union all
select 9
) as t1
group by a

----------------------------------------
1*1=1
1*2=2 2*2=4
1*3=3 2*3=6 3*3=9
1*4=4 2*4=8 3*4=12 4*4=16
1*5=5 2*5=10 3*5=15 4*5=20 5*5=25
1*6=6 2*6=12 3*6=18 4*6=24 5*6=30 6*6=36
1*7=7 2*7=14 3*7=21 4*7=28 5*7=35 6*7=42 7*7=49
1*8=8 2*8=16 3*8=24 4*8=32 5*8=40 6*8=48 7*8=56 8*8=64
1*9=9 2*9=18 3*9=27 4*9=36 5*9=45 6*9=54 7*9=63 8*9=72 9*9=81

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