asfernandes
c1b5abfdf2
1) Refactor all types of boolean nodes.
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2) Remove the scratch from the nodes.
2010-09-17 03:15:32 +00:00
asfernandes
b7b63becf3
Refactor a number of expression nodes: nod_add, nod_divide, nod_multiply, nod_negate, nod_user_name, nod_subtract, nod_current_date, nod_current_time, nod_current_timestamp, nod_add2, nod_subtract2, nod_multiply2, nod_divide2, nod_current_role, nod_internal_info
2010-09-04 21:36:41 +00:00
asfernandes
ada671c034
Refactor nod_index and nod_bit_* to InversionNode
2010-08-31 00:20:33 +00:00
asfernandes
8f857a6deb
Refactor plan nodes to PlanNode
2010-08-29 20:20:19 +00:00
asfernandes
96f2829728
Refactor nod_map and nod_sort to type-safe MapNode and SortNode
2010-08-29 18:20:44 +00:00
asfernandes
48d83b8fef
Refactor nod_rse, nod_relation, nod_procedure, nod_union, nod_aggregate and nod_window.
2010-08-24 03:25:01 +00:00
asfernandes
4c9eb2c3ce
Correct double indirection (jrd_nod**) so const cascades to every dereference
2010-08-09 16:06:23 +00:00
asfernandes
dadc0f560c
Const correction for EVL, EXE and they subsystems. Adjustments to CMP and OPT.
2010-08-09 15:48:51 +00:00
asfernandes
7f3dc62888
Frontport fix for CORE-3090 - Incorrect LEFT JOIN result using table and derived constant subquery
2010-08-07 02:10:08 +00:00
asfernandes
e37d097240
Misc
2010-05-22 02:00:45 +00:00
dimitr
d3f7b43c7e
Let's calculate the exact cardinality for external tables.
2010-05-21 06:14:25 +00:00
dimitr
c6b776cdc8
Fixed the first part of the problem described in CORE-2933: Very slow execution of a script that creates a lot of metadata.
2010-05-17 09:47:08 +00:00
asfernandes
4763533669
Refactor jrd_req into JrdStatement (shared part) and jrd_req (execution of a statement).
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Fixed some bugs found in the way.
2010-04-18 22:19:11 +00:00
asfernandes
fe9bf02848
Refactor user and system functions nodes
2010-04-05 18:43:11 +00:00
asfernandes
4b322bf94a
Fix problem with ExprNodes in joins causing "no current record" error
2010-04-05 03:27:11 +00:00
dimitr
fe6d0c93b3
Correction for one of my prior optimizer commits.
2010-03-16 05:01:57 +00:00
asfernandes
d3ad05b7eb
Misc
2010-03-14 15:33:06 +00:00
dimitr
c65e55c9e6
Fixed CORE-1550: Unnecessary index scan happens when the same index is mapped to both WHERE and ORDER BY clauses.
2010-03-11 10:03:32 +00:00
dimitr
76a9a59469
Reduced number of local variables. Thanks to Claudio.
2010-03-09 16:55:05 +00:00
robocop
be3660d221
Misc.
2010-03-07 04:30:35 +00:00
dimitr
413f771766
Actually, the optimizer doesn't need an expression index request to operate.
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Moreover, I have a feeling that calling EVL from OPT is a bad design.
2010-02-26 09:51:48 +00:00
dimitr
42fbd2615b
Front ported CORE-2833: Changing data that affects an expression index that contains references to null date fields fails.
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Also, removed the duplicated (and, at the first glance, unnecessary) code that forced us to deal with the already_attached flag. To be tested in the field.
2010-02-26 09:02:22 +00:00
asfernandes
4f9b9161b4
Feature CORE-2006 - SUBSTRING with regular expression (SIMILAR TO) capability
2010-02-21 01:47:54 +00:00
dimitr
9b7f40c1f0
Minor code unification.
2010-02-20 06:39:35 +00:00
dimitr
c7853fa9e1
Fixed CORE-1295: Bad optimization of queries with DB_KEY.
2010-02-19 20:25:56 +00:00
dimitr
faae1821f5
More optimizations for window expressions.
2010-02-16 08:57:35 +00:00
robocop
835750a54c
Misc.
2010-02-16 08:53:31 +00:00
asfernandes
c737d6a807
Create ExprNode class hierarchy.
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Convert CONCATENATE and aggregate functions to it.
Fix some bugs:
- select sum(n) over (order by n2), sum(n) over (), n, n2 from x1;
- select (select 1 from x1 b where list(1, a.n) = 1) from x1 a;
2010-02-13 20:29:29 +00:00
dimitr
ccac0eac72
Fixed CORE-2822: Error "no current row for fetch operation" when subquery includes a non-trivial derived table.
2010-01-22 14:05:46 +00:00
dimitr
e2aab75891
Fixed the optimizer in regard to the partitioned window functions.
2010-01-19 07:52:38 +00:00
dimitr
df53be29bf
Misc.
2010-01-18 11:39:34 +00:00
dimitr
5186898135
Misc.
2010-01-15 11:40:08 +00:00
dimitr
b795f91267
Misc.
2010-01-14 08:42:33 +00:00
asfernandes
d8c99a9be2
1) Make procedures and functions member of the same hierarchy (Routine class)
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2) Some completion for external functions
2009-12-27 22:05:22 +00:00
dimitr
37b3b13956
Misc.
2009-12-14 16:43:47 +00:00
robocop
dae574f7f1
Misc, style and unused vars.
2009-12-13 10:41:53 +00:00
dimitr
753f4d62d5
Fixed the plan output (reversed order of view sub-elements) in HEAD (also broken by my yesterday's commit).
2009-12-10 15:03:56 +00:00
dimitr
916d9fab98
Fixed the plan output (table names) in HEAD (broken by my yesterday's commit).
2009-12-10 14:48:42 +00:00
dimitr
11495a55fb
Refactored the whole RSB stuff into classes. They're inside the /recsrc sub-directory now.
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Fixed the layering for WITH LOCK and (partially) ANY/ALL predicates.
Cleaned up the outdated code that never worked (mapping DISTINCT to an index, some VMS remainings).
Wiped out a lot of the pre-ODS11 optimizer logic. Some minor adjustments there.
Re-implemented the full outer join from scratch. This resolves CORE-2678 (full outer join cannot use available indices).
Resolved CORE-2796: DB_KEY is always zero for external tables.
Implemented the core part of the scrollable PSQL cursors. Implementation is still incomplete, but ready for testing.
Some other changes I don't recall at the moment ;-)
WARNING! The engine may be unstable. Please email me about any issues found.
2009-12-09 18:45:44 +00:00
asfernandes
a3dd1d0482
Misc
2009-11-26 00:20:59 +00:00
robocop
804ad6048a
Restrict us to ODS11 and ODS12 until the dust settles down.
2009-11-24 11:42:56 +00:00
dimitr
e6909de7f7
Wipe out the SCROLLABLE_CURSORS code + minor cleanup.
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Also, surfaced scrollability for PSQL cursors (without internal support yet).
2009-10-31 06:25:01 +00:00
dimitr
3a3512da8e
Fixed CORE-2659: Sub-optimal (not indexed) query plan for outer joins involving complex views.
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We don't need to validate all the view streams inside the optimizer, just those inside the e_derived_expr_expr argument.
2009-10-03 11:37:46 +00:00
robocop
3e66cd45f5
Comments.
2009-08-20 11:18:57 +00:00
dimitr
17b630c1fe
More optimizer adjustments + named constants instead of hardcoded numbers.
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In particular, this commit should resolve the degraded restore performance.
2009-08-19 09:18:30 +00:00
dimitr
ee941f9a3d
Misc.
2009-07-08 15:09:47 +00:00
robocop
f7bf07d9be
Style.
2009-07-03 11:02:17 +00:00
uid32383
e704280a59
Style.
2009-06-28 10:29:36 +00:00
dimitr
77dce5ac12
Fixed some issues with the optimizer, namely: (1) incorrect cost calculation for indexed retrievals in joins and (2) too pessimistic heuristics for indices with zero selectivity.
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Also, I removed the restricition I put recently to address some issues reported in the tracker (it's no longer necessary).
2009-06-19 11:33:12 +00:00
dimitr
a082a6fba6
Slightly changed a bugfix for CORE-2078 to avoid affecting indexed retrievals.
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It's a compromise targeted to resolve any regressions in v2.1.2 (like CORE-2411).
2009-05-14 15:41:48 +00:00
