Hi,
I need to append a condion to select statement based on another condition.
i.e i want to write like this
SELECT COLUMN1,
COLUMN2
FROM TAB1
WHERE COND1
AND COND2
AND
CASE
WHEN
some_aother_condition
THEN
<append> COND3
ELSE
<append> COND4
END
how i can acchieve this?
Or is there any other possibility to do like this?
Thanks in Advance,
Anil Kumar Ch.
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I forgot to add EXECUTE IMMEDIATE sql_stmt
i.e.
DECLARE
sql_stmt VARCHAR2(200);
BEGIN
sql_stmt := 'SELECT COLUMN1, COLUMN2 FROM TAB1 WHERE COND1 AND COND2 AND ';
CASE condition
WHEN condition_3 THEN
sql_stmt := sql_stmt || COND3;
WHEN condition_4 THEN
sql_stmt := sql_stmt || COND4;
END CASE;
EXECUTE IMMEDIATE sql_stmt;
END
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Answer for Membership
by: DLyallPosted on 2006-03-16 at 06:31:02ID: 16205183
Build a statement string using your conditional statements
and then use EXECUTE IMMEDIATE <dynamic string>;
where dynamic_string is a string expression that represents a SQL statement or PL/SQL block
e.g.
DECLARE
sql_stmt VARCHAR2(200);
BEGIN
sql_stmt := 'SELECT COLUMN1, COLUMN2 FROM TAB1 WHERE COND1 AND COND2 AND ';
CASE condition
WHEN condition_3 THEN
sql_stmt := sql_stmt || COND3;
WHEN condition_4 THEN
sql_stmt := sql_stmt || COND4;
END CASE;
END;