Re: argument of CASE/WHEN must not return a set
On Thu, Jan 9, 2014 at 1:26 AM, George Weaver <gweaver@shaw.ca> wrote:
ARRAY_TO_STRING( REGEXP_MATCHES('12-70510','^[0-9,0-9.0-9]+')
development(# , ',')
I guess this part of your statement will return 1,2, which is a set
Can you try below:
SELECT CASE
WHEN LENGTH(ARRAY_TO_STRING( REGEXP_MATCHES('12-70510','^[0-9,0-9.0-9]+')
, ',')
)
= LENGTH('12-70510')
THEN cast(ARRAY_TO_STRING( REGEXP_MATCHES('12-70510','^[0-9,0-9.0-9]+')
, ',') as varchar(100))
ELSE ''
END AS "12-70510";
But anyways, I think the best way to do it is the way you have already figured (check the plan for both statements once you have sorted out the error)
Best Regards,
Sameer Kumar | Database Consultant
ASHNIK PTE. LTD.
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