arnobrinkman
94e7337628
Use candidate cost for decision which candidate to use.
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Stop using indexes when total cost is greater as the previous used total cost.
Fix excludeLower/exludeUpper problem with using more operators to the same field.
2005-11-05 14:50:01 +00:00
hvlad
15ac3a9f47
Fixed SF #223060
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Slow processing of GREATER-THEN operator
2005-10-27 21:52:17 +00:00
dimitr
68a2827d2e
1) Commented code that doesn't work properly (until Arno is back).
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2) Fixed some optimization issues in the new logic.
3) Small cleanup.
2005-09-08 10:22:59 +00:00
dimitr
6e927365fb
Fixed server crash in the optimizer.
2005-08-22 08:34:50 +00:00
robocop
132eedb7a6
Misc.
2005-08-12 08:05:53 +00:00
arnobrinkman
c3f9c5bebc
Some more cost based calculation. Fine-tunning will follow
2005-08-08 22:17:40 +00:00
aafemt
b61d8b3c17
Warnings
2005-06-22 05:13:54 +00:00
asfernandes
890494ac7c
1) Fixed SF #1016040 Missing external libraries causes engine exception
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2) Use better error messages
2005-06-14 03:16:54 +00:00
asfernandes
559ce29c51
1) Replace length_ to strlen as noted by Claudio and Dmitry
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2) Change USHORT to ULONG in intl.cpp
2005-06-06 18:14:10 +00:00
robocop
b8d1f00f94
- Corrections and changes to Adriano's commit, subject to his inspection.
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- Solved an endless loop with trim and zero-length trim characters, etc.
- Some places are signaled with FB_COMPILER_MESSAGE for prompt attention.
2005-06-06 08:30:03 +00:00
asfernandes
ad1a65f798
Apply forgotten opt.cpp changes in Optimizer.cpp
2005-06-03 01:25:47 +00:00
asfernandes
59213efe7e
Merge INTL branch into HEAD
2005-05-27 22:45:31 +00:00
arnobrinkman
b81de1aca4
more realistic cost value for unique retrieval
2005-05-23 23:19:43 +00:00
dimitr
8f13835656
1. Fixed bug with selectivity of non-equality comparisons.
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2. A bit changed the invertions selection code to help in both MERGE and JOIN paths.
2005-05-18 14:43:36 +00:00
dimitr
0f9e349f19
Fixed a small OR handling bug.
2005-05-15 12:44:07 +00:00
alexpeshkoff
5729790ed6
1. Applied class MetaName
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2. Small generic cleanup
2005-05-12 18:28:04 +00:00
hvlad
a3e64959da
Correction. Thanks to Claudio
2005-05-12 13:51:43 +00:00
hvlad
f1d576feb4
Fixed unregistered bug - "index key too big" when creating descending index
2005-05-07 19:45:57 +00:00
dimitr
c01b84565a
Tuned reduce factors again.
2005-04-23 12:16:11 +00:00
dimitr
79f50250ff
Third attempt to apply reduced selectivity properly.
2005-04-16 17:28:45 +00:00
dimitr
2045d89a76
Code simplification and some style corrections.
2005-04-16 16:57:06 +00:00
dimitr
4410fb9f97
1) Fixed wrong index usage for nested loop joins (indexed relationship must be a requirement).
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2) Better optimizaton for tables with zero selectivities.
3) Fixed wrong choice of index in the case of the same selectivity and number of indices.
4) Fixed wrong total selectivity calculated for compound non-equality comparisons.
5) Some constants tuning based on two weeks of the extreme testing.
Subject of Arno's review, although all my tests show much better results without any regressions.
2005-04-15 14:54:59 +00:00
dimitr
fde48e9530
Moved page-level code to DPM.
2005-03-29 09:43:31 +00:00
dimitr
eaf99a7a0e
Second attempt to fix "divide by zero" issues in the optimizer.
2005-03-29 09:07:51 +00:00
dimitr
75d6a7c5a0
Oops.
2005-03-28 15:29:38 +00:00
dimitr
706a1b925d
Corrected previous commit + ODS11 branch.
2005-03-28 15:24:18 +00:00
dimitr
f5bb311b4b
Fixed "wrong page type" bugcheck.
2005-03-25 07:54:32 +00:00
arnobrinkman
2955e5e79a
Fix bug #1169728 with explicit navigational PLAN no comparisons in the WHERE clause were matched against the navigational index
2005-03-24 21:49:10 +00:00
dimitr
3075bdcdf2
1) Fixed bug with the lost sort node that caused unordered data to be returned.
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2) Fixed badly optimized join orders in triggers.
2005-03-19 16:55:26 +00:00
aafemt
2f6d857bc9
There is no need for MSVC hacks if MSVC is not used
2005-03-10 10:27:17 +00:00
arnobrinkman
cd11c3a123
fix divide by zero issues and add some comments
2005-03-07 22:59:13 +00:00
dimitr
78617a7154
Fixed more issues with explicit plans.
2005-02-22 05:51:03 +00:00
robocop
854da4e241
Misc.
2005-02-21 06:01:01 +00:00
arnobrinkman
bb3560eb92
cosmetic changes
2005-02-17 00:17:05 +00:00
dimitr
e74888f7fc
Minor stuff.
2005-02-15 11:52:52 +00:00
fsg
9b7fcb5fa0
Fix Claudio's fix.
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FSG
2005-02-15 10:03:53 +00:00
robocop
59b49cab6e
Temporary fix for problems reported by Alex and Frank.
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Since this is Arno's new file, I didn't want to touch more.
Folks may prefer to use the ugly MIN/MAX macros (which I abhor) instead of the template versions in xutility, but I digress.
2005-02-15 06:39:53 +00:00
arnobrinkman
9ae0b6d273
simplify code and some cosmetic changes
2005-02-14 18:51:16 +00:00
robocop
5a951268ae
Don't know if gcc is going to accept the const member functions. There's a MemoryPool in the middle.
2005-02-14 06:05:57 +00:00
arnobrinkman
6f7813bf28
Remove some temp-code that was still left
2005-02-12 17:06:12 +00:00
arnobrinkman
283d7f0d8c
Add new optimizer logic for handling :
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ODS11:
- segment-selectivity
- better support for IS NULL
- better support for STARTING WITH
- matching both OR and AND nodes to indexes
- pick better JOIN order based on cost rules
ODSx:
- Indexed order on OUTER JOIN queries
2005-02-10 22:54:17 +00:00
