[ version: sqlite-snapshot-201711181730.tar.gz embedded in Perl's
DBD::SQLite module. ]
I have a user-defined function used as follows:
CREATE TRIGGER
after_insert_x
AFTER INSERT ON
x
FOR EACH ROW
BEGIN
INSERT INTO
y(id)
VALUES(
udf()
);
END;
What I am seeing is that for a row inserted into table y the udf() is
called *twice*. This behaviour only seems to occur with the
INSERT/VALUES combination. If I change the trigger contents to be the
following then the udf is only called once:
INSERT INTO
y(id)
SELECT
udf()
;
I'm having a hard time duplicating this with a standalone test case,
and I'm also having difficulty with EXPLAIN QUERY PLAN returning no
data for some statements... so I have a bit of a rabbit hole to explore
before I can come back with more information. But perhaps someone else
knows what might be going on?
--
Mark Lawrence
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