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Ignore IS NOT NULL and NOT NULL constraints on NOT NULL columns.

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FossilOrigin-Name: e476408e3c5ba5f3ba5e98ff264167c163d72e3f
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drh
2013-08-20 17:00:55 +00:00
parent 4044906210
commit d0aa2f3afd
5 changed files with 24 additions and 14 deletions
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6
test/where3.test
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@ -246,6 +246,12 @@ do_execsql_test where3-3.1 {
0 0 1 {SCAN TABLE t302}
0 1 0 {SEARCH TABLE t301 USING INTEGER PRIMARY KEY (rowid=?)}
}
do_execsql_test where3-3.2 {
SELECT * FROM t301 WHERE c=3 AND a IS NULL;
} {}
do_execsql_test where3-3.3 {
SELECT * FROM t301 WHERE c=3 AND a IS NOT NULL;
} {1 2 3}
if 0 { # Query planner no longer does this
# Verify that when there are multiple tables in a join which must be