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Add support for LIMIT and OFFSET in a recursive query.

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FossilOrigin-Name: 1945484e6b9769c1943f750f5b09860417fb190a
This commit is contained in:
drh
2014-01-22 18:07:04 +00:00
parent fe1c6bb9c2
commit aa9ce7078a
4 changed files with 54 additions and 34 deletions
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17
test/with1.test
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@ -190,11 +190,22 @@ do_execsql_test 5.2.2 {
)
SELECT * FROM ancest;
} {0 0 1 10 2 20 3 30 4 40 4 40 5 50 6 60 7 70 7 70 8 80 8 80 8 80 8 80 9 90 9 90 9 90 9 90}
do_execsql_test 5.2.3 {
WITH RECURSIVE
ancest(id, mtime) AS
(VALUES(0, 0)
UNION ALL
SELECT edge.xto, edge.seq FROM edge, ancest
WHERE edge.xfrom=ancest.id
ORDER BY 2 LIMIT 4 OFFSET 2
)
SELECT * FROM ancest;
} {2 20 3 30 4 40 4 40}
do_catchsql_test 5.3 {
WITH i(x) AS ( VALUES(1) UNION ALL SELECT x+1 FROM i LIMIT 10 )
SELECT x FROM i LIMIT 10;
} {1 {LIMIT in a recursive query}}
WITH i(x) AS ( VALUES(1) UNION ALL SELECT x+1 FROM i LIMIT 5)
SELECT x FROM i;
} {0 {1 2 3 4 5}}
do_execsql_test 5.4 {
WITH i(x) AS ( VALUES(1) UNION ALL SELECT (x+1)%10 FROM i)