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Further tests for the special null-handling on this branch.

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FossilOrigin-Name: 0dbbb51f4d39cafb01d625d65c12dcb232a9c1da7ed5a9397bf55cfea1b980d2
This commit is contained in:
dan
2019-08-20 20:09:51 +00:00
parent 2a0c16f276
commit 546738f855
3 changed files with 43 additions and 7 deletions
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36
test/nulls1.test
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@ -201,6 +201,42 @@ do_eqp_test 5.5 {
`--SEARCH TABLE t4 USING INDEX t4ab (a=?)
}
#-------------------------------------------------------------------------
#
do_execsql_test 6.0 {
CREATE TABLE t5(a, b, c);
WITH s(i) AS (
VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<200
)
INSERT INTO t5 SELECT i%2, CASE WHEN (i%10)==0 THEN NULL ELSE i END, i FROM s;
}
set res1 [db eval { SELECT a,b FROM t5 WHERE a=1 ORDER BY b NULLS LAST, c }]
set res2 [db eval {
SELECT a,b FROM t5 WHERE a=1 ORDER BY b DESC NULLS FIRST, c DESC
}]
do_execsql_test 6.1.1 {
CREATE INDEX t5ab ON t5(a, b, c);
SELECT a,b FROM t5 WHERE a=1 ORDER BY b NULLS LAST, c;
} $res1
do_eqp_test 6.1.2 {
SELECT a,b FROM t5 WHERE a=1 ORDER BY b NULLS LAST, c;
} {
QUERY PLAN
`--SEARCH TABLE t5 USING COVERING INDEX t5ab (a=?)
}
do_execsql_test 6.2.1 {
SELECT a,b FROM t5 WHERE a=1 ORDER BY b DESC NULLS FIRST, c DESC
} $res2
do_eqp_test 6.2.2 {
SELECT a,b FROM t5 WHERE a=1 ORDER BY b DESC NULLS FIRST, c DESC
} {
QUERY PLAN
`--SEARCH TABLE t5 USING COVERING INDEX t5ab (a=?)
}
finish_test