Any ideas on why this would error out? Is it the nulls? create table tsteil.sub_duration_duration as ( select NULL provider, a.user_id, a.subscription_id, a.game_code, a.timestamp, to_number(decode(a.duration, '14D', 14, '02D', 2, '40D', 40, '05D', 5, '10D', 10, '21D', 21, '30D', 30, '60D', 60, '90D', 90, '01M', 30, '03M', 60, '06M', 90, '12M', 360, '24M', 720, '07D', 7, '15D', 15, '01D', 1, '00D', 0, 'ERROR')) duration from tsteil.sub_duration_orders a UNION ALL select NULL provider, b.user_id, b.subscription_id, b.game_code, b.timestamp, to_number(decode(b.duration, '14D', 14, '02D', 2, '40D', 40, '05D', 5, '10D', 10, '21D', 21, '30D', 30, '60D', 60, '90D', 90, '01M', 30, '03M', 60, '06M', 90, '12M', 360, '24M', 720, '07D', 7, '15D', 15, '01D', 1, '00D', 0, 'ERROR')) duration from tsteil.sub_duration_account_keys b UNION ALL select NULL provider, c.user_id, c.subscription_id, c.game_code, c.timestamp, to_number(decode(c.duration, '14D', 14, '02D', 2, '40D', 40, '05D', 5, '10D', 10, '21D', 21, '30D', 30, '60D', 60, '90D', 90, '01M', 30, '03M', 60, '06M', 90, '12M', 360, '24M', 720, '07D', 7, '15D', 15, '01D', 1, '00D', 0, 'ERROR')) duration from tsteil.sub_duration_game_cards c UNION ALL select NULL provider, d.user_id, d.subscription_id, d.game_code, d.timestamp, to_number(decode(d.duration, '14D', 14, '02D', 2, '40D', 40, '05D', 5, '10D', 10, '21D', 21, '30D', 30, '60D', 60, '90D', 90, '01M', 30, '03M', 60, '06M', 90, '12M', 360, '24M', 720, '07D', 7, '15D', 15, '01D', 1, '00D', 0, 'ERROR')) duration from tsteil.sub_duration_rental_codes d ) ORA-01723: zero-length columns are not allowed ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------