T-SQL Split name at comma

I have seen a lot of questions and answers for this but not a lot for my situation.

I have lastname,firstname<space>(maybe middle initial, maybe full middle name, maybe nothing whatever it is I do not want it)

The convention from the source system is lastname, firstname<space> "the rest" which is enforced at the field level. Sorry it should have been designed differently but was not. I did not do it.

Thanks
phil916Asked:
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Nick67Commented:
So, what are you hoping for?
A query that will take the input field and return everything left of the comma as one field and everything between the comma and the space as a second field?
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phil916Author Commented:
Sally M Smith is entered as

Smith,Sally M

I want
SELECT
Smith
,Sally

Most methods I can find will give me

Smith
,Sally M
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phil916Author Commented:
I should add that it could be

Smith,Sally M
Jones,Tommy Lee
Gifford,Frank

In all cases I need only first and last separated.
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Nick67Commented:
Patindex is your friend here.
It is constructing RIGHT statement that's a bit tough.
I don't have any data with a comma and no space immediately, but the idea is there

Here's a start.
My table is tblClients and [Client Name]
select [client name],
LEFT([Client Name],PATINDEX ( '%,%' , [Client Name] )-1) as lastname,
LEN([Client Name]) as length,
PATINDEX ( '% %' , [Client Name]) as space,
PATINDEX ( '%,%' , [Client Name] ) as comma,
left([Client Name],PATINDEX ( '% %' , [Client Name])) as firstname
from dbo.tblClients
where [Client Name] like '%,%'

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The RIGHT Statement isn't correct yet.
I'll get it in a bit, but give it a whirl
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Scott PletcherSenior DBACommented:
SELECT name AS original_name, LEFT(name, CHARINDEX(' ', name + ' ', CHARINDEX(',', name)) - 1) AS last_and_first_only
FROM (
    SELECT 'Smith,Sally M' AS name UNION ALL
    SELECT 'Jones,Tommy Lee' UNION ALL
    SELECT 'Gifford,Frank'
) AS test_data
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Brendt HessSenior DBACommented:
Try this snippet:
SELECT [All needed fields but name],
	SUBSTRING(BadFieldNoCookie, 1, CHARINDEX(',', BadFieldNoCookie)-1 AS LastName,
	SUBSTRING(SUBSTRING(BadFieldNoCookie, 1, CHARINDEX(' ', BadFieldNoCookie + ' ')-1), CHARINDEX(',', BadFieldNoCookie), LEN(BadFieldNoCookie)) AS FirstName
FROM ATable

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Obviously, change the field and table names....
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Nick67Commented:
Persnicketty bit of syntax.
This breaks your data into separate fields and ditches the comma
Is that what you want?
To break your ugly field into two fields and ditch middle names and initials?
You can do without [name], length, thespace, and comma , but in code it shows you the math

select [name],
LEN([Name]) as length,
PATINDEX ( '% %' , [Name]) as thespace,
PATINDEX ( '%,%' , [Name] ) as comma,

Case PATINDEX ( '% %' , [Name])
	when 0 then RIGHT([name],len([name])- PATINDEX ( '%,%' , [Name] ))
	else RIGHT (LEFT([name],PATINDEX ( '% %' , [Name])), PATINDEX ( '% %' , [Name]) - PATINDEX ( '%,%' , [Name] )) 
end AS firstname,
LEFT([Name],PATINDEX ( '%,%' , [Name] )-1) as lastname
 FROM (
     SELECT 'Smith,Sally M' AS name UNION ALL
     SELECT 'Jones,Tommy Lee' UNION ALL
     SELECT 'Gifford,Frank'
 ) AS test_data 

Open in new window


"Most methods I can find will give me

 Smith
 ,Sally M "

It's taking the right 'x' characters of the left 'y' characters that is the trick to getting rid of what you don't want.
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