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with t as ( select to_date('31.01.2023 17:30:00', 'dd. mm.yyyy hh24:mi:ss') dt, to_date('30.01.2023 18:00:00', 'dd.mm.yyyy hh24:mi:ss') dt2 from dual ) select to_char(add_months(dt, 1), 'dd.mm.yyyy hh24:mi:ss') dt1, to_char(add_months(dt2,1), 'dd.mm.yyyy hh24:mi:ss') dt2 from t

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