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DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET latin1);
INSERT INTO t1 VALUES ('a'),('A');
DROP VIEW IF EXISTS v1;
CREATE VIEW v1 AS SELECT * FROM t1 WHERE a='a';
SELECT * FROM v1 WHERE a=_latin1'a' COLLATE latin1_bin;
erroneously returns two rows:
+------+ | a | +------+ | a | | A | +------+
The expected result is to return on row only, with 'a' in lower case.
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MDEV-8728 Fix a number of problems in equal field and equal expression propagation
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