+
+ if ( $driver eq 'Pg' && $dbh->{'pg_server_version'} < 70300 ) {
+ push @r, "UPDATE pg_attribute SET attnotnull = FALSE
+ WHERE attname = '$name'
+ AND attrelid = ( SELECT oid FROM pg_class
+ WHERE relname = '$table'
+ )";
+ } else {
+ push @r, "ALTER TABLE $table ALTER COLUMN $name DROP NOT NULL";
+ }