FromRow : match field with column name rather than with position

[paul-r-ml]

Hi Nurpax,

my current software uses large tables, and therefore FromRow instances are getting a bit hard to manage, with all these "field" that I must count.
I think it would be clearer if we had a "fieldNamed :: FromField a => String -> RowParser a" combinator, allowing me to match column by name rather than by its position in a request.

What do you think about that ?

Cheers,

[nurpax]

Hi @paul-r-ml, sorry for taking so long to reply, I was on holiday w/o access to a desktop machine.

I'm not sure this is something I'd like to add. I understand that this becomes tedious with a large number of result fields.. But fieldNamed feels like moving a part of the tuple selector from the SELECT a,b,c clause into the RowParser. A naive implementation (looking up a field based on the column name on each row result set) would also be pretty slow, and a faster implementation would mean rewriting a bunch of the field parser code.