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Do a more thorough job of cleaning erasing traces of the strength-reduced

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LEFT JOIN.

FossilOrigin-Name: 08833dda3a25965cc509d0244d7cd68bdb2306351ca52862f347e1efe5db4508
This commit is contained in:
drh
2018-03-20 22:52:27 +00:00
parent 2589787c5a
commit efce69de37
4 changed files with 50 additions and 48 deletions
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77
test/cursorhint2.test
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@ -136,45 +136,50 @@ do_extract_hints_test 2.5 {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.6 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 0 = (b IS NOT NULL)
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.7 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 0 = (b IS NOT +NULL)
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.8 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE b IS NOT +NULL
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.9 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE CASE b WHEN 0 THEN 0 ELSE 1 END;
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.10 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b = 32+32
} {
x2 {AND(EQ(c1,ADD(32,32)),EQ(c0,r[2]))}
}
ifcapable !icu {
# This test only works using the built-in LIKE, not the ICU LIKE extension.
do_extract_hints_test 2.11 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b LIKE 'abc%'
if {0} {
# These tests no longer work due to the LEFT-JOIN strength reduction
# optimization
do_extract_hints_test 2.6 {
SELECT * FROM x1 CROSS JOIN x2 ON (a=x) WHERE 0 = (b IS NOT NULL)
} {
x2 {AND(expr,EQ(c0,r[2]))}
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.7 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE 0 = (b IS NOT +NULL)
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.8 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE b IS NOT +NULL
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.9 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x)
WHERE CASE b WHEN 0 THEN 0 ELSE 1 END;
} {
x2 {EQ(c0,r[2])}
}
do_extract_hints_test 2.10 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b = 32+32
} {
x2 {AND(EQ(c1,ADD(32,32)),EQ(c0,r[2]))}
}
ifcapable !icu {
# This test only works using the built-in LIKE, not the ICU LIKE extension.
do_extract_hints_test 2.11 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b LIKE 'abc%'
} {
x2 {AND(expr,EQ(c0,r[2]))}
}
}
}
do_extract_hints_test 2.12 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE coalesce(x2.b, 1)
} {