zOs/SQL/SEL2

-- alter table dgdb9998.TWK001A                                         00010000
--    add constraint c1 check (wk001t1 in ('a', 'b', 'c'));             00020000
-- commit;                                                              00030000
select *        from oa1A.TSV132A1                                      00040001
           -- , 'x' || WK001T1 || 'y',   hex(wk001t1)                   00050000
--       , timestamp('1956-04-01 6:00:00')                              00060000
--       , real(3.141e12)                                               00070000
--       from A540769.TWK001A a;                                        00080002
--       from DGDB9998.TWK001A a;                                       00090000