The following SQL produces an incorrect result with sqlite-3.8.7.1:
CREATE TABLE A(
symbol TEXT,
type TEXT
);
INSERT INTO A VALUES('ABCDEFG','chars');
INSERT INTO A VALUES('1234567890','num');
CREATE TABLE B(
chars TEXT,
num TEXT
);
CREATE TABLE IF NOT EXISTS C AS
SELECT A.symbol AS symbol,A.type,
CASE A.type
WHEN 'chars' THEN A.symbol
WHEN 'num' THEN B.chars
ELSE NULL
END AS chars
FROM A LEFT OUTER JOIN B ON A.type='num' AND B.num=A.symbol;
SELECT * FROM C;
with 3.8.7.1:
sqlite> SELECT * FROM C;
ABCDEFG|chars|ABCDEFG
1234567890|num|1234567
with 3.8.6:
sqlite> SELECT * FROM C;
ABCDEFG|chars|ABCDEFG
1234567890|num|
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