WF_GROUP_OBJECT_DEF

alter table wf_group_object_def add version_start number default 0 not null;
alter table wf_group_object_def add version_end number default 0;
alter table wf_group_object_def add constraint group_object_def_chk_version CHECK (nvl(version_start, 0)>=0 AND (nvl(version_end,version_start)>=version_start OR nvl(version_end,0)=0));
declare
    lsql varchar2(1000);
    lcons_name varchar2(100);
begin
    -- Drop a primary key constraint for a given table
    -- This script needs to be run as a rator user. Also, please be aware that data dictionaries are case sensitive, ie. uppercase table name
    select constraint_name into lcons_name from user_constraints where TABLE_NAME = 'WF_GROUP_OBJECT_DEF' and constraint_type = 'P';
    lsql := 'alter table wf_group_object_def drop constraint ' || lcons_name || ' cascade drop index';
    dbms_output.put_line(lsql);
    execute immediate lsql;
end;