sql server - Checking availability of data in columns of table in SQL? -


iam having table testtable have few columns say

            c1  | c2 | c3 | c4             'ab'|  1 | 09 |          //case1 [ must return 1]                 |    |    |          //case2 [ must return 0]

i want check if data in table present if of columns data present want value 1 , if columns blank(no data) want value 0

can 1 help, have no idea expect condition in front of me.

you can try following query, using coalesce command:

select case when coalesce(c1,c2,c3,c4) null 0 else 1 end testtable

if blank values not nulls empty strings, query can changed to:

select case when c1+c2+c3+c4 = '' 0 else 1 end testtable

or, best variant, check both nulls , empty strings:

select case when coalesce(c1,'')+coalesce(c2,'')+coalesce(c3,'')+coalesce(c4,'') = '' 0 else 1 end testtable

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