//column equals and hashcode is based on column name
}
for ( Column column : columns ) {
if ( table.containsColumn( column ) ) {
uc = table.getOrCreateUniqueKey( keyName );
uc.addColumn( table.getColumn( column ) );
unbound.remove( column );
}
}
if ( unbound.size() > 0 ) {
StringBuilder sb = new StringBuilder( "Unable to create unique key constraint (" );