how to read the transaction logs?

hi,

i'd like to know what sql commands were issued to a postgresql database
this morning.

i know this is not the most technically-formulated question, but this is
what i'd like to know..

is there a way?

the transaction logs... they should have registered all the db-changes,
aren't they?

is there a way to "convert" them to sql commands?

or some other way maybe?

thanks,
gabor