sql server - How to get a fixed number of rows in sql -


if have 4 rows in database these. 

 |____a____|____b_____|  |   a1    |    b1    |  |   a2    |    b2    |  |   a3    |    b3    |  |   a4    |    b4    |

but need display 10 rows added no column serial number each row these 

 __no__|____a____|____b_____|    1   |   a1    |    b1    |    2   |   a2    |    b2    |    3   |   a3    |    b3    |    4   |   a4    |    b4    |    5   |         |          |    6   |         |          |    7   |         |          |    8   |         |          |    9   |         |          |   10   |         |          |

how query sql server?

fiddle here : http://sqlfiddle.com/#!3/9a9dd/1

with cte1 (     select 1 [no]     union     select [no]+1 cte1 [no]<10 ), cte2 ( select row_number() on (order (select null)) rn, a,b   yourtable )  select c1.[no],a,b cte1 c1 left join cte2 c2 on c1.[no] = c2.rn

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