Combine two columns two tables

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Combine two columns two tables

Author

Topic

besadmin
Posting Yak Master

116 Posts

Posted - 2009-05-14 : 17:28:54

hey friends, just as an example this is what i want to do.
i have a table with 1 column values (1, 2, 3, 4)
i have another table with 1 column (a, b, c, d)
how do i query to do 1a, 1b, 1c, 1d
2a, 2b, 2c, 2d.

Thanks for any help friends!

khtan
In (Som, Ni, Yak)

17689 Posts

Posted - 2009-05-14 : 22:18:19

[code]
select t1.col + t2.col
from table1 t1 cross join table2 t2
[/code]

KH
[spoiler]Time is always against us[/spoiler]

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-05-15 : 14:40:57

if ist tables column is of type int remember to cast it to varchar before concatenation


select cast(t1.col as varchar(10)) + t2.col
from   table1 t1 cross join table2 t2

besadmin
Posting Yak Master

116 Posts

Posted - 2009-05-19 : 18:40:38

Hey, Thanks a ton guys!
Your method definatley provided the example for what we were trying to do. Thanks!
Another way besides Cross Join my manager found was using like t1, t2
like this


SELECT Letter.Letter + Number.Num 
AS NumAndLetter
FROM Letter, Number

Do you see any downside for using that, or benefits of using the CROSS JOIN over each other?

The CROSS JOIN I haven't seen before, it's nice!

Thanks again to both of you!!

LAter,

LoztInSpace
Aged Yak Warrior

940 Posts

Posted - 2009-05-21 : 07:44:09

It's the same. Check the query plan if you need convincing!

Transact Charlie
Master Smack Fu Yak Hacker

3451 Posts

Posted - 2009-05-21 : 08:43:28

yes it *is* the same but at some point support for non ANSI JOINs will be removed from SQLserver.

I have no idea when this will be.

It's safer and more readable to use the CROSS JOIN syntax.

Charlie
===============================================================
Msg 3903, Level 16, State 1, Line 1736
The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION

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