Use of coalesce with temporary variables in sql and concept of single quotes? -


I have created a stored procedure, I am getting the error due to the same quotation from the wrong places -> wrong Near the syntax = in (@l = colases) Can it help !!! ??

code: 

  set @ q = n'select '+ @ l = COALESCE (@l +', ',' ') +' + FROM from attribute_names' + @ Tablename print @q EXEC sp_executesql @q


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