sql server - how to check empty field in sql -


i have sql query shows address1 in field , address2 'address1,address2'.my query 

(s.address1 + '  ,  ' + s.address2)as address1

but when values in address2 blank shows 'address1,' , need show address1.how can remove comma

j w close, think, actual formula want, believe, is:

s.address1 + coalesce('  ,  ' + nullif(s.address2,''),'') address1

(below not relevant, since op has said column value blank, not null)

have issue - above won't work (yet) because apparently have concat_null_yields_null set off. need turned on (usually setting ansi_nulls on), since:

in future version of sql server concat_null_yields_null on , applications explicitly set option off generate error. avoid using feature in new development work, , plan modify applications use feature.


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