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Fix the OP_OpenEphemeral opcode in the bytecode engine so that if it is called

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a second or subsequent time, it merely clears the existing table rather than
creating a new one.  Proposed fix for ticket [d0866b26f83e9c55e30de0821f5d].

FossilOrigin-Name: 4678cb1044f0b4dc813e48f3bd0f85240a66e2ecf8763280d66726cc031c93a7
This commit is contained in:
drh
2018-12-31 16:36:42 +00:00
parent d1d158bf5a
commit 4afdfa195b
4 changed files with 69 additions and 12 deletions
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45
test/window1.test
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@ -620,4 +620,49 @@ do_execsql_test 14.1 {
);
} {1 2 3}
# 2018-12-31
# https://www.sqlite.org/src/info/d0866b26f83e9c55
# Window function in correlated subquery causes assertion fault
#
do_catchsql_test 15.0 {
WITH t(id, parent) AS (
SELECT CAST(1 AS INT), CAST(NULL AS INT)
UNION ALL
SELECT 2, NULL
UNION ALL
SELECT 3, 1
UNION ALL
SELECT 4, 1
UNION ALL
SELECT 5, 2
UNION ALL
SELECT 6, 2
), q AS (
SELECT t.*, ROW_NUMBER() OVER (ORDER BY t.id) AS rn
FROM t
WHERE parent IS NULL
UNION ALL
SELECT t.*, ROW_NUMBER() OVER (ORDER BY t.id) AS rn
FROM q
JOIN t
ON t.parent = q.id
)
SELECT *
FROM q;
} {1 {cannot use window functions in recursive queries}}
do_execsql_test 15.1 {
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES('a'), ('b'), ('c');
CREATE TABLE t2(a, b);
INSERT INTO t2 VALUES('X', 1), ('X', 2), ('Y', 2), ('Y', 3);
SELECT x, (
SELECT sum(b)
OVER (PARTITION BY a ROWS BETWEEN UNBOUNDED PRECEDING
AND UNBOUNDED FOLLOWING)
FROM t2 WHERE b<x
) FROM t1;
} {a 3 b 3 c 3}
finish_test