Ich denke, Sie können dies tun:
curid NUMBER;
desctab DBMS_SQL.DESC_TAB;
colcnt NUMBER; -- total number of columns
res NUMBER;
V_ASN_COUNT NUMBER;
BEGIN
OPEN O_CURSOR FOR
SELECT
column1, -- a bunch of columns
column2,
...
COUNT(DISTINCT SI.ASN_NO) OVER (PARTITION BY SI.ASN_NO) AS ASN_COUNT
FROM AN_ORDER_INFO OI, AN_SHIPMENT_INFO SI
WHERE -- a bunch of criteria
curid := DBMS_SQL.TO_CURSOR_NUMBER (O_CURSOR);
DBMS_SQL.DESCRIBE_COLUMNS(curid, colcnt, desctab);
-- "ASN_COUNT" is the last column, i. e. "colcnt" refers to column number of "ASN_COUNT"
-- or set colcnt directly, e.g. colcnt := 12;
FOR i IN 1..colcnt LOOP
IF desctab(i).col_type = 2 THEN
DBMS_SQL.DEFINE_COLUMN(curid, i, V_ASN_COUNT);
ELSIF desctab(i).col_type = 12 THEN
DBMS_SQL.DEFINE_COLUMN(curid, i, datevar);
.......
ELSE
DBMS_SQL.DEFINE_COLUMN(curid, i, namevar, 25);
END IF;
END LOOP;
-- I do not know if this loop is needed, perhaps you can simply do
-- DBMS_SQL.DEFINE_COLUMN(curid, colcnt, V_ASN_COUNT);
-- for a single column
res := DBMS_SQL.FETCH_ROWS(curid); -- Fetch only the first row, no loop required
DBMS_SQL.COLUMN_VALUE(curid, colcnt, V_ASN_COUNT); -- Loop over all column not required, you just like to get the last column
IF V_ASN_COUNT > 1 THEN
RAISE MULTIPLE_ASNS;
END IF;
DBMS_SQL.CLOSE_CURSOR(curid);
Weitere Einzelheiten finden Sie in der Oracle-Dokumentation:DBMS_SQL.TO_CURSOR_NUMBER Funktion.
Das Problem mit dem offenen/zurückgespulten Cursor bleibt jedoch bestehen!
