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with tab as ( select 'Monday 8:30 a.m. to 6:00 p.m. Tuesday Closed Wednesday 8:30 a.m. to 6:00 p.m' as str from dual ), t1 as ( select regexp_substr(str,'^.*$',1,level,'m') as str, level as lvl from tab connect by level <= regexp_count(str,chr(10)) + 1 ) select listagg(str,chr(10)) within group (order by lvl) as "Result String" from t1 where instr(str,'Closed')=0
Result String
Monday 8:30 a.m. to 6:00 p.m.
Wednesday 8:30 a.m. to 6:00 p.m