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34 Commits

Author SHA1 Message Date
drh
8210233c7b Revise tests cases to align with the new EXPLAIN QUERY PLAN output. 
FossilOrigin-Name: 50fbd532602d2c316813046ed6be8be2991c281eb5f295c4c28520a0de73862c
 2021-03-20 15:11:29 +00:00
drh
bd462bcc10 Improvements to EXPLAIN QUERY PLAN formatting. The MULTI-INDEX OR now shows 
a separate "INDEX" subtree for each index.  SCALAR SUBQUERY entries provide
a subquery number that is related back to the .selecttrace output.

FossilOrigin-Name: 7153552bac51295c56a1c42ca79d57195851e232509f9e9610375692f48c7e86
 2018-12-24 20:21:06 +00:00
drh
5198ff5767 Do not generate subroutines for non-static SELECT and EXISTS expressions. 
Fix up some test cases to account for the minor changes in EXPLAIN QUERY PLAN
output.

FossilOrigin-Name: 06de44ec9e173992ca9afb89dd2b4e40d2a7e35512c7959603cdceb606f5dfbd
 2018-12-24 12:09:47 +00:00
drh
d8852095e0 Fix EXPLAIN QUERY PLAN so that it describes IN operators implemented using 
a ROWID lookup.

FossilOrigin-Name: 60045fbf52162f15f2e18a4e392e80fab19bdbce242728b5e62b0894eac49dfd
 2018-08-16 15:29:40 +00:00
drh
5d72d9245d Make a separate limb in the EXPLAIN QUERY PLAN output for the various lines 
associated with the OR-optimization.

FossilOrigin-Name: 75ac7b4e4fd0811ca80c719badacff207e0bbd00ac64dde3b3d4ec676fad472d
 2018-05-04 00:39:43 +00:00
drh
fa16f5d9d6 Enhance EXPLAIN QUERY PLAN to report the generation of constant rows using 
VALUES or just a SELECT without FROM.

FossilOrigin-Name: c75eee69fa8a9b56ee58a4cc539e80cc982f43390dc3a357344d58479dd89a41
 2018-05-03 01:37:13 +00:00
drh
03c3905f94 Fix a dangling-else problem that was causing recursive CTEs to malfunction. 
Begin fixing test cases to work with the new EQP output.

FossilOrigin-Name: 82ca44b82fed6814c84440ba8bfaa019488ab956e84ac165180e2fcece6facb2
 2018-05-02 14:24:34 +00:00
drh
7e6f980bd4 Proposed fix for ticket [b899b6042f97f5] 
FossilOrigin-Name: c7f9f47b239fdd99b555fb0a31eb82b22dbe6c821f1612d67a0d6a822288d9f7
 2017-09-04 00:33:04 +00:00
dan
c456a76fb3 When generating individual loops for each ORed term of an OR scan, move any 
constant WHERE expressions outside of the loop, as is done for top-level
loops.

FossilOrigin-Name: e4a022be4b069b08cfdfda5295461676b99d28e17bbbedfbcb362dec69de59bd
 2017-06-22 16:51:16 +00:00
drh
af3906a798 Many test cases fixed to work with encryption. 
FossilOrigin-Name: d866fffb8b1af5003a8730ce7029d1edddb24d46
 2016-03-14 17:05:04 +00:00
dan
e96f2df3dd Changes to the output of EXPLAIN QUERY PLAN to make it clearer when a query uses the PRIMARY KEY index of a WITHOUT ROWID table. 
FossilOrigin-Name: 9268df305b90ac11e44b3107bbab5becf38860b7
 2014-05-23 17:17:06 +00:00
dan
75525cbe24 Update a couple of test cases to account for the fact that this branch prefers an index scan and partial sort over a full-table scan and full external sort. 
FossilOrigin-Name: 9b975bf33cd8fc28c64183a9642bf9fb436a4746
 2014-04-30 14:53:21 +00:00
drh
165674d8db Fix test cases so that they work when the query planner uses index size 
estimates to determine whether or not to try an covering index scan.

FossilOrigin-Name: 2f394de88f23dacd3c61e586a4214ffc6f927d97
 2013-10-04 15:58:59 +00:00
drh
d9e3cad2f8 Progress toward using the iScanRatio information on indices. Many tests 
are still failing.

FossilOrigin-Name: 6c352edbba85a15ca356b5e131f4b3b2723d1774
 2013-10-04 02:36:19 +00:00
drh
3975974780 Updates to requirements marks. No code changes. 
FossilOrigin-Name: 213020769f310aec1591d97756b53891d0b64005
 2013-08-02 23:40:45 +00:00
drh
4fe425ad79 "make test" now passing. 
FossilOrigin-Name: addd7f466d6ff55f82d907286650c26b06e9397b
 2013-06-12 17:08:06 +00:00
drh
8636e9c55c Handle virtual tables correctly when using logarithmic costs. Fixes 
to test cases.

FossilOrigin-Name: e612664aa2e24ed5e222be2c7fe16e210ac9bded
 2013-06-11 01:50:08 +00:00
drh
5822d6feb2 Fix test cases for the new EXPLAIN QUERY PLAN format. Add the 
wherecosttest tool.  Other fixes to logarithm cost.

FossilOrigin-Name: aa580e368e3c398b8377b80342dfdd906324c248
 2013-06-10 23:30:09 +00:00
drh
de9a7b8a94 Add the ability to disable the covering-index-scan optimization at compile-time, 
start-time, or at run-time.  Add test cases to check this configurability.

FossilOrigin-Name: ccb8ecc30c8e6c7760131250297c2e452bbac43b
 2012-09-17 20:44:46 +00:00
drh
3f4d1d1b02 Attempt to use a covering index even on a full table scan, under the theory 
that the index will be smaller and require less disk I/O and thus be faster.

FossilOrigin-Name: cfaa7bc12847a7006ccc93815f2395ad5259744a
 2012-09-15 18:45:54 +00:00
dan
2f56da3f26 Changes to various test scripts so that veryquick.test runs with OMIT_COMPOUND_SELECT defined. 
FossilOrigin-Name: 76bb649ee2633226324130f5898622c348f93769
 2012-02-13 10:00:35 +00:00
dan
ef7075de1f Fix a problem with "EXPLAIN QUERY PLAN SELECT count(*) FROM tbl". 
FossilOrigin-Name: 9f9f32882501ac9b6e60f81195a64bdbf6e4497b
 2011-02-21 17:49:49 +00:00
drh
083310dfcc Change the weighting of binary searches on tables to 1/10th the cost of a 
search on an index.  Change the assumed reduction in search space from a
indexed range constraint from 1/3rd to 1/4th.  Do not let the estimated 
number of rows drop below 1.

FossilOrigin-Name: 4847c6cb71423248b186ab7842b97c83e2f5fefd
 2011-01-28 01:57:41 +00:00
drh
95aa47b10a Use the estimated number of rows computed for subqueries in the cost 
computations for outer queries.

FossilOrigin-Name: 56bbc539246a6dc9f1ae1edb898db7a4f6f6d322
 2010-11-16 02:49:15 +00:00
drh
04098e6085 Change the EQP output for the min/max optimization from "SCAN" to "SEARCH". 
Other changes in where.c in support of full branch coverage testing.

FossilOrigin-Name: d52b593978aa1776af7aeb957c4f8df0c5cb7e43
 2010-11-15 21:50:19 +00:00
dan
3985479b9d Change some test cases to account for the new EXPLAIN QUERY PLAN output. 
FossilOrigin-Name: 88a854e18fc6bd619fa8d8a911abff50a9b76b9e
 2010-11-15 16:12:58 +00:00
dan
91da6b8397 Test some example code from documentation page eqp.html. 
FossilOrigin-Name: 547bc2c232cbf7b7ff295287ab8fddb880e517f9
 2010-11-15 14:51:33 +00:00
dan
4bc39fa188 Change the EXPLAIN QUERY PLAN output to use "USING INDEX" instead of "BY INDEX", and to use "SEARCH" instead of "SCAN" for loops that are not full-table scans. 
FossilOrigin-Name: 6611b76b0296875fb9903b25dfaa783a9c12eaa1
 2010-11-13 16:42:27 +00:00
dan
fa00aa2ea1 Add EXPLAIN QUERY PLAN test cases to check that the examples in the documentation work. 
FossilOrigin-Name: 85fdad850a4da33fd74f5394b921a63ea6b40bdb
 2010-11-12 17:41:37 +00:00
dan
30969d3f26 Use "COMPOUND" instead of "COMPOSITE" in the EXPLAIN QUERY PLAN output to describe UNION, UNION ALL, EXCEPT and INTERSECT operations. 
FossilOrigin-Name: 28643b85d93d27a44b9370e4087efa8fa2af7f8e
 2010-11-11 17:48:51 +00:00
dan
7f61e92c3a Add a row of EXPLAIN QUERY PLAN output for each composite select operation (UNION, EXCEPT etc.) in the query. 
FossilOrigin-Name: 00fb8468b5f2c48a3c91b86803bf306a0331496f
 2010-11-11 16:46:40 +00:00
dan
47eb16d4ce Modifications to test cases to account for new EXPLAIN QUERY PLAN output. 
FossilOrigin-Name: 30904ef8412348464e893e9e1551ef22cad24a3e
 2010-11-11 10:36:25 +00:00
dan
4a07e3db27 Further enhancements and fixes for explain query plan. 
FossilOrigin-Name: 73c93f5a2a32ee8c5d07c9ba33b2641e72626627
 2010-11-09 14:48:59 +00:00
dan
2ce224535f Experimental changes to EXPLAIN QUERY PLAN. 
FossilOrigin-Name: f4747eb83dacce6430ad6e5eb20155ffad975514
 2010-11-08 19:01:16 +00:00