How to get the value of a particular column column name?
Hi allHow to get the column name for a particular column value.
example:
create table test (ID number, col2, col3 varchar varchar);
Insert into test values (1, 'true', 'false');
Insert into test values (2, 'false', 'true');
commit;
I want to choose the name of the data column 'true' with id = 1;
That is to say) while waiting for answer is "col2". pls help someone.
This might help:
DECLARE
c1 SYS_REFCURSOR;
BEGIN
OPEN c1 FOR
SELECT col2,
col3
FROM test
WHERE id = 1;
--
FOR c IN (SELECT rownum rn,
t2.column_value.getrootelement() name,
EXTRACTVALUE(t2.column_value, 'node()') value
FROM TABLE(XMLSEQUENCE(c1)) t,
TABLE(XMLSEQUENCE(EXTRACT(column_value, '/ROW/node()'))) t2)
LOOP
IF c.value = 'true' THEN
DBMS_OUTPUT.PUT_LINE(c.name);
END IF;
END LOOP;
END;
Tags: Database
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