Si la table spécifiée a une colone "_Slony-I_<clustername>_rowID", la supprime.

declare
        p_tab_id                alias for $1;
        v_tab_fqname    text;
        v_tab_oid               oid;
begin
        -- ----
        -- Grab the central configuration lock
        -- ----
        lock table sl_config_lock;

        -- ----
        -- Construct the tables fully qualified name and get its oid
        -- ----
        select slon_quote_brute(PGN.nspname) || '.' ||
                                slon_quote_brute(PGC.relname),
                                PGC.oid into v_tab_fqname, v_tab_oid
                        from sl_table T,
                                "pg_catalog".pg_class PGC,
                                "pg_catalog".pg_namespace PGN
                        where T.tab_id = p_tab_id
                                and T.tab_reloid = PGC.oid
                                and PGC.relnamespace = PGN.oid;
        if not found then
                raise exception 'Slony-I: tableDropKey(): table with ID % not found', p_tab_id;
        end if;

        -- ----
        -- Drop the special serial ID column if the table has it
        -- ----
        if exists (select true from "pg_catalog".pg_attribute
                        where attrelid = v_tab_oid
                                and attname = '_Slony-I_schemadoc_rowID')
        then
                execute 'lock table ' || v_tab_fqname ||
                                ' in access exclusive mode';
                execute 'alter table ' || v_tab_fqname ||
                                ' drop column "_Slony-I_schemadoc_rowID"';
        end if;

        return p_tab_id;
end;