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18 Commits

Author SHA1 Message Date
Igor Babaev
92bcb906a0 Fixed bug mdev-11278.
If a recursive CTE referred to a materialized view/derived table then
the query that used this CTE returned a bogus error message.
2016-11-13 14:56:29 -08:00
Igor Babaev
061d28207d Fixed bug mdev-10923.
The code for st_select_lex::find_table_def_in_with_clauses()
did not take into account the fact that the specs for mergeable
CTEs were cloned and were not processed by the function
With_element::check_dependencies_in_spec().
2016-09-30 17:40:42 -07:00
Igor Babaev
b91bd822fa Fixed bug mdev-10889
The bug was in the code of the recursive method
With_element::check_unrestricted_recursive. For recursive
calls of this method sel->get_with_element()->owner != owner.
2016-09-26 10:40:44 -07:00
Igor Babaev
2d36e5aa38 Fixed bug mdev-10736 that caused crashes.
The bug manifested itself for recursive definitions that
used anchors over tables with blobs.
2016-09-06 10:05:36 -07:00
Igor Babaev
9ac235ab7d mdev-9864: cleanup, re-factoring.
Added comments.
Added reaction for exceeding maximum number of elements in with clause.
Added a test case to check this reaction.
Added a test case where the specification of a recursive table
uses two non-recursive with tables.
2016-08-29 22:45:17 -07:00
Igor Babaev
c8f85bf263 mdev-9864: cleanup, re-factoring.
Added comments.
2016-08-26 16:09:22 -07:00
Igor Babaev
f982d1074a Fixed the following problem:
Temporary tables created for recursive CTE
were instantiated at the prepare phase. As
a result these temporary tables missed
indexes for look-ups and optimizer could not
use them.
2016-07-26 22:58:33 -07:00
Igor Babaev
8c6a9aa30f Added a proper check for acceptable mutually recursive CTE. 2016-06-30 15:13:12 -07:00
Igor Babaev
9606525666 Simplified the code that fills recursive tables. 2016-06-25 21:38:40 -07:00
Galina Shalygina
b4f1f42062 Fixed the problem of wrong identification of WITH tables defined in WITH clauses without RECURSIVE.
Added test cases to check the fix.
Fixed the problem of wrong types of recursive tables when the type of anchor part does not coincide with the
type of recursive part.
Prevented usage of marerialization and subquery cache for subqueries with recursive references.
Introduced system variables 'max_recursion_level'.
Added a test case to test usage of this variable.
2016-05-24 21:29:52 +03:00
Galina Shalygina
46a2e41398 Fixed many problems in the code of With_element::check_unrestricted_recursive().
Added the check whether there are set functions in the specifications of recursive CTE.
Added the check whether there are recursive references in subqueries.
Introduced boolean system variable 'standards_compliant_cte'. By default it's set to 'on'.
When it's set to 'off' non-standard compliant CTE can be executed.
2016-05-19 22:07:53 +03:00
Galina Shalygina
3b47632bfc Fixed a bug that caused crashes for SHOW CREATE VIEW <view> when <view> was recursive. Added a test case to check the fix. 2016-05-14 23:33:50 +03:00
Galina Shalygina
d9b332bd20 Made prepared statement, explain and views working with recursuve CTE. 2016-05-12 23:23:12 +03:00
Galina Shalygina
f516b966e1 Main patch for mdev-9864 2016-05-09 23:39:10 +03:00
Galina Shalygina
be1d06c8a5 Merge branch '10.2' into 10.2-mdev9864 2016-05-08 23:04:41 +03:00
Igor Babaev
f340aaeb52 Addressed the issues raised in the review for the main patch
of mdev-8789.
Fixed a bug in TABLE_LIST::print.
Fixed another bug for the case when the definition of a
WITH table contained column list while the join in the main
query used two instances of this table.
2016-02-17 14:30:25 -08:00
Igor Babaev
6dbdb433cb Fixed compile errors of the merge of the patch for mdev-8789 with 10.2. 2015-12-21 12:13:39 -08:00
Galina Shalygina
dfc4772f83 MDEV-8789 Implement non-recursive common table expressions
Initial implementation
2015-12-18 10:01:42 -08:00