Offset and IGNORE NULLS for LEAD/LAG

Hi all

so far, I thought that I understood the functioning of LEAD and the DELAY, but after you add the IGNORE NULLS and a shift, I'm confused

I created a Fiddle SQL that executes a 11 g R2, v$ version returns Oracle Database 11 g Express Edition Release 11.2.0.2.0

CREATE TABLE vt (part INT, ord int, val INT);
INSERT INTO vt VALUES(1, 1, 8);
INSERT INTO vt VALUES(1, 2, 10);
INSERT INTO vt VALUES(1, 3, 3);
INSERT INTO vt VALUES(1, 4, NULL);
INSERT INTO vt VALUES(1, 5, NULL);
INSERT INTO vt VALUES(1, 6, NULL);
INSERT INTO vt VALUES(1, 7, 2);
INSERT INTO vt VALUES(1, 8, NULL);
INSERT INTO vt VALUES(1, 9, 5);




Arghhh, of course, I am wrong and the result is correct

OFFSET 2 more IGNORE NULLS does not mean ""find the next non null from two lines after the current line ", there "find the 2nd non-NULL value from directly after the current line". "

And to compensate FOR the 1, both rules will return the same result.

This occurs when you are focused on a specific thing and not see the forest for the trees.

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