sql - how to know which column is matched when filter the records by multiple columns compare -


i have table "table1" like

name col1 col2 col3 col4    1    2    3    4

i want filter table 

"select * table1 (col1=1 or col2=1 or col3=1 or col4=1)"

i expect result is

name col_name    col1

is possible sql statement?

you not limited selection of columns in select list, can use expressions. example, can use this:

select     name, -- more columns needed     case     when col1=1 'col1'     when col2=1 'col2'     when col3=1 'col3'     when col4=1 'col4'     else null end col_match table1 (col1=1 or col2=1 or col3=1 or col4=1)

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