Opdeling af en kommasepareret streng i Oracle virker ikke

Problemet i din forespørgsel er, at where-klausulen kun vil blive anvendt på niveau 1 og ikke længere.

Prøv dette ved at bruge indlejret tabel:

WITH xtable AS (
         SELECT 1 ID, '116,117,169,170,173,175,9015,44008,44367,44446,45081,45083,46779,47161,47222' AGT FROM DUAL
         UNION ALL
         SELECT 2 ID, '456,789' AGT FROM DUAL
         UNION ALL
         SELECT 3 ID, '116,117,169,170,173,175,9015,44008,44367,44446,45081,45083,46779,47161' AGT FROM DUAL
     )      
  select regexp_substr(x.AGT,'[^,]+', 1, t.column_value) agt
  from xtable x cross join table(
    cast(
      multiset(
        select level
        from dual
        connect by level <= regexp_count(x.AGT,',') + 1
      )as sys.odcinumberlist
    )
  ) t
  where x.id = 3;

Det er en generel forespørgsel, som du kan bruge selv uden where-klausul, hvis du ville konvertere dem alle på én gang.

I Oracle 12c+ kan du bruge OUTER APPLY for at opnå samme effekt og enklere syntaks:

WITH xtable AS (
         SELECT 1 ID, '116,117,169,170,173,175,9015,44008,44367,44446,45081,45083,46779,47161,47222' AGT FROM DUAL
         UNION ALL
         SELECT 2 ID, '456,789' AGT FROM DUAL
         UNION ALL
         SELECT 3 ID, '116,117,169,170,173,175,9015,44008,44367,44446,45081,45083,46779,47161' AGT FROM DUAL
     )      
  select regexp_substr(x.AGT,'[^,]+', 1, t.n) agt
  from xtable x
  outer apply (
        select level n
        from dual
        connect by level <= regexp_count(x.AGT,',') + 1
  ) t
  where x.id = 3;