=over 4
-=item Arguments: $schema \@databases, $version, $directory, $preversion, $sqlt_args
+=item Arguments: $schema \@databases, $version, $directory, $preversion, \%sqlt_args
=back
Creates a SQL file based on the Schema, for each of the specified
database types, in the given directory.
+By default, C<\%sqlt_args> will have
+
+ { add_drop_table => 1, ignore_constraint_names => 1, ignore_index_names => 1 }
+
+merged with the hash passed in. To disable any of those features, pass in a
+hashref like the following
+
+ { ignore_constraint_names => 0, # ... other options }
+
=cut
sub create_ddl_dir