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 CONVERT (INT, myfield) or CAST (myfield AS INT)?		  Reply to Topic
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techsupport14
Starting Member

USA
18 Posts
Posted - 08/04/2014 :  14:58:22  Show Profile  Reply with Quote
Neither are working.

I have this function:

Create Function dbo.GetNumberic(@ItemDesc VarChar(8000))
Returns VarChar(8000)
AS
Begin  
    Return Left(
             SubString(@ItemDesc, PatIndex('%[0-9]%', @ItemDesc), 8000), 
             PatIndex('%[^0-9]%', SubString(@ItemDesc, PatIndex('%[0-9]%', @ItemDesc), 8000))'X'-1)
End


and it extracts the numbers out of the alphanumeric field BUT the field is still a string and i need to match the numeric values to another table (membership number) and that's a numeric field.

So I tried the CONVERT (INT, dbo.GetNumeric(ItemDesc)) but it is not working. Nor is the CAST (dbo.GetNumeric(ItemDesc) AS INT).

Can you please help.
Edited by - techsupport14 on 08/04/2014 15:00:11

tkizer
Almighty SQL Goddess

USA
38200 Posts
Posted - 08/04/2014 :  15:02:32  Show Profile  Visit tkizer's Homepage  Reply with Quote
quote:

it is not working

Could you elaborate? Is it throwing a error? If so, please post it. Is it not showing the correct result? If so, please show us what it is doing and what it should be doing.

Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/
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MichaelJSQL
Constraint Violating Yak Guru

252 Posts
Posted - 08/04/2014 :  21:25:49  Show Profile  Reply with Quote
It might be the function you are using. That function has an error in it.

Line PatIndex('%[^0-9]%', SubString(@ItemDesc, PatIndex('%[0-9]%', @ItemDesc), 8000))'X'-1)

The 'X'-1)

. it will also only find the first numeric sequence in a string. but if that is all you need, you're good. Could just be the error.

You might try something like the following in the function body:

DECLARE @AlphaNUmeric Varchar(25) = 'XDHDH123hh$4ll'
DECLARE @I int = 1
DECLARE @Return varchar(100) = ''

WHILE @I < LEN(@AlphaNUmeric)
BEGIN
SELECT @Return = @Return + CASE WHEN ASCII(SUBSTRING(@AlphaNUmeric,@I,1)) BETWEEN 48 and 57 THEN SUBSTRING(@AlphaNUmeric,@I,1) ELSE '' END
SET @I = @I + 1
END

SELECT CAST(@Return as INT)



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techsupport14
Starting Member

USA
18 Posts
Posted - 08/05/2014 :  00:03:01  Show Profile  Reply with Quote
Thank you. I figured it out :)
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ScottPletcher
Aged Yak Warrior

USA
550 Posts
Posted - 08/05/2014 :  13:03:44  Show Profile  Reply with Quote
Yeah, pretty clear the code meant to be this:

PatIndex('%[^0-9]%', SubString(@ItemDesc, PatIndex('%[0-9]%', @ItemDesc), 8000)+'X')-1)
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