sql - Return different rows for each column in a row -


i have data presented in multiple rows , columns 0 or 1 values. i'm trying create unique row each 1, there multiple 1's in row. ex:

**a    b    c    d**   1    0    1    1   0    0    0    1   1    1    0    0

i have return 6 rows, in 1 column so

**return**           c      d      d           b

thanks in advance!

you can union all statement:

select val ((select 'a' val t = 1) union       (select 'b' t b = 1) union       (select 'c' t c = 1) union       (select 'd' t d = 1)      ) t

as note: hope have other columns can include in output. sql tables are, definition, not ordered. so, have no idea in example of original source given value.


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