Make SQL Select same row multiple times

Question

I need to test my mail server. How can I make a Select statement that selects say ID=5469 a thousand times.

Answer 1

You can use the UNION ALL statement.

Try something like:

SELECT * FROM tablename WHERE ID = 5469
UNION ALL
SELECT * FROM tablename WHERE ID = 5469

You'd have to repeat the SELECT statement a bunch of times but you could write a bit of VB code in Access to create a dynamic SQL statement and then execute it. Not pretty but it should work.

Answer 2

The easy way is to create a table with 1000 rows. Let's call it BigTable. Then you would query for the data you want and join it with the big table, like this:

SELECT MyTable.*
FROM MyTable, BigTable
WHERE MyTable.ID = 5469

Answer 3

create table #tmp1 (id int, fld varchar(max)) insert into #tmp1 (id, fld) values (1,'hello!'),(2,'world'),(3,'nice day!')

select * from #tmp1 go

select * from #tmp1 where id=3 go 1000

drop table #tmp1

Answer 4

Here's a way of using a recursive common table expression to generate some empty rows, then to cross join them back onto your desired row:

declare @myData table (val int) ;
insert @myData values (666),(888),(777) --some dummy data

;with cte as
(
    select 100 as a
    union all
    select a-1 from cte where a>0 
        --generate 100 rows, the max recursion depth

)
,someRows as
(
select top 1000 0 a from cte,cte x1,cte x2 
       --xjoin the hundred rows a few times
       --to generate 1030301 rows, then select top n rows
)
select m.* from @myData m,someRows where m.val=666

substitute @myData for your real table, and alter the final predicate to suit.

Answer 5

easy way...

This exists only one row into the DB

sku = 52 , description = Skullcandy Inkd Green ,price = 50,00

Try to relate another table in which has no constraint key to the main table

Original Query

SELECT  Prod_SKU , Prod_Descr , Prod_Price FROM  dbo.TB_Prod WHERE Prod_SKU = N'52'

The Functional Query ...adding a not related table called 'dbo.TB_Labels'

SELECT TOP ('times')  Prod_SKU , Prod_Descr , Prod_Price FROM  dbo.TB_Prod,dbo.TB_Labels WHERE Prod_SKU = N'52'

Answer 6

If your are doing this in sql Server

declare @cnt int
set @cnt = 0

while @cnt < 1000
begin
    select '12345'
    set @cnt = @cnt + 1
end 

select '12345' can be any expression