Oracle-Setup :
CREATE TABLE table_name ( S_NO, id, Pid ) AS
SELECT 1, 123, 'PAQ123' FROM DUAL UNION ALL
SELECT 2, 433, 'WSD3FF' FROM DUAL UNION ALL
SELECT 3, 565, 'PAS45E' FROM DUAL UNION ALL
SELECT 4, 123, 'PAQ123X' FROM DUAL UNION ALL
SELECT 5, 433, 'WSD3FFY' FROM DUAL UNION ALL
SELECT 6, 123, 'PAQ123Z' FROM DUAL;
Abfrage :
SELECT *
FROM (
SELECT t.*,
( SELECT COUNT(*)
FROM table_name x
WHERE t.id = x.id
AND LENGTH( t.Pid ) < LENGTH( x.pid )
AND INSTR( x.Pid, t.Pid ) = 1 ) AS num_matches
FROM Table_name t
)
WHERE num_matches > 0;
Ausgabe :
S_NO ID PID NUM_MATCHES
---------- ---------- ------- -----------
1 123 PAQ123 2
2 433 WSD3FF 1
Wenn Sie die Übereinstimmungen erhalten möchten, können Sie eine Sammlung verwenden:
CREATE TYPE stringlist AS TABLE OF VARCHAR2(100);
/
Abfrage :
SELECT *
FROM (
SELECT t.*,
CAST(
MULTISET(
SELECT PID
FROM table_name x
WHERE t.id = x.id
AND LENGTH( t.Pid ) < LENGTH( x.pid )
AND INSTR( x.Pid, t.Pid ) = 1
)
AS stringlist
) AS matches
FROM Table_name t
)
WHERE matches IS NOT EMPTY;
oder (da ich mir nicht sicher bin MULTISET ist in 10g):
SELECT *
FROM (
SELECT t.*,
CAST(
(
SELECT COLLECT( PID )
FROM table_name x
WHERE t.id = x.id
AND LENGTH( t.Pid ) < LENGTH( x.pid )
AND INSTR( x.Pid, t.Pid ) = 1
)
AS stringlist
) AS matches
FROM Table_name t
)
WHERE matches IS NOT EMPTY;
Ausgabe
S_NO ID PID MATCHES
---------- ---------- ------- ------------------------------------
1 123 PAQ123 TEST.STRINGLIST('PAQ123X','PAQ123Z')
2 433 WSD3FF TEST.STRINGLIST('WSD3FFY')
