Hi,
our developers use a ORM tool which generates updates that write all
columns of a table. In most cases, however, very few columns actually
change. So, those updates mostly write the same value that already is
there in the column.
Now, if there is an index on such columns, does Postgres recognize the
situation and skip the index update? Similarly, does it skip the FK or
UNIQUE check?
Thanks,
Torsten
