4243e27f22
Modify the way the costs of various query plans are estimated. If the user supplies a likelihood() value (or equivalent) on an indexed WHERE constraint, use it to estimate the number of index rows visited.
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FossilOrigin-Name: 90e36676476e8db00658772e6c938242f766d306
2014-04-30 15:22:25 +00:00
8164722c58
Add text to the header comment of whereLoopAddBtree() describing how the costs of various b-tree loops are estimated.
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FossilOrigin-Name: 05e6e16cb28c9ffb4596bd2ef81f687c5403ecbb
2014-04-30 15:00:16 +00:00
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.
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FossilOrigin-Name: 9b975bf33cd8fc28c64183a9642bf9fb436a4746
2014-04-30 14:53:21 +00:00
4a6b8a05cd
Fix a couple of out-of-date comments in where.c.
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FossilOrigin-Name: eefeda32d54efbbdf7d20b719299eda48b891fae
2014-04-30 14:47:01 +00:00
253666e520
Improved rendering of LogEst values corresponding to real values near 0.0
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in the tool/logest.c utility program.
FossilOrigin-Name: 32910c8c595858245bb7ecfe3aa0f90eeae641af
2014-04-30 14:22:38 +00:00
224155dd1c
Fix long-standing typos in comments.
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FossilOrigin-Name: b9f91317c34d07769a95dc2f905a6ccabceb64a3
2014-04-30 13:19:09 +00:00
264d2b97a9
Test that the default values used when sqlite_stat1 data is not available are calculated correctly. Fixes for the same.
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FossilOrigin-Name: e2d42f909de85a0586389f2dc0e654f7af2e351a
2014-04-29 19:01:57 +00:00
e4618fb30d
Merge trunk changes into this branch.
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FossilOrigin-Name: d74299f037f3a6a4b3bce8b4d1c76c407c1f3b3e
2014-04-29 16:46:24 +00:00
09e1df6c00
Ignore likelihood() values on indexed IPK lookups.
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FossilOrigin-Name: 5bb7757a7b32a74482d3e93e9c9eea02273fe981
2014-04-29 16:10:22 +00:00
67a03cfd6e
Fix a test case so that it updates sqlite_stat1 consistently.
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FossilOrigin-Name: 2dc5a0b55567f13f0528ed17242e680cde2f2a29
2014-04-29 12:01:35 +00:00
7de2a1faf6
Do not reduce the number of rows scanned at all for "IS NOT NULL" constraints. Fix a bug in calculating the number of rows visited by scans of partial indicies.
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FossilOrigin-Name: a8ae93f0cffa116df0ba34d46a53f49d42dace41
2014-04-28 20:11:20 +00:00
42685f211e
The trunk assumes that an open range constraint on an indexed term (col>?) term matches 1/4 of the indexed rows, and that a closed constraint (col BETWEEN ? AND ?) matches 1/64. Change this branch to do the same.
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FossilOrigin-Name: 4047ac75e2a8f0b330255501c42e4f04e5ab500d
2014-04-28 19:34:06 +00:00
2e525f18e2
Merge all recent trunk enhancements and fixes into the sessions branch.
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FossilOrigin-Name: e158812c34b01ce516d26636a489509bf61d1c27
2014-04-28 18:02:21 +00:00
65e6b0dd12
Add the sqlite3_rtree_query_callback() API to the RTree virtual table.
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(Cherrypick from the sessions branch.)
FossilOrigin-Name: af2cbe64adab5f9e3b0f3da00d06428088589d7f
2014-04-28 17:56:19 +00:00
ae28b301e1
Add the sqlite3_rtree_query_callback() API to the RTree virtual table.
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FossilOrigin-Name: 3dca2809352c6c6d56db74447a814f77011c6220
2014-04-28 17:51:12 +00:00
6b6828625b
Update unordered.test to take into account for the fact that SQLite now prefers a full-table scan over a non-covering index scan that visits a large percentage of the table rows.
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FossilOrigin-Name: 20f468dfbcb247e51446fad411a6e6cc0d130411
2014-04-28 15:11:25 +00:00
9881d60d17
Add an extra column to a table in analyze9.test to give the planner a little more reason to select an index.
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FossilOrigin-Name: 1b95544f84bf83c28cc15f6d0690fdf8a6bb3941
2014-04-28 12:08:23 +00:00
b51926e67c
Update test script analyze3.test to account for the fact that SQLite now prefers a full-table scan over a non-covering index scan that visits a large percentage of the table rows.
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FossilOrigin-Name: 35f46a55d866b9a87c1321aab8e0cfe86ccadb93
2014-04-28 10:00:59 +00:00
e3bfbb7284
Modify internal function whereLoopAdjustCost() so that it does not prefer a skip-scan over a regular index scan even if the regular scan uses a subset of the WHERE terms used by the skip-scan.
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FossilOrigin-Name: 88a5758dcce891eb7be15432ebdc9f80071d413b
2014-04-28 09:35:31 +00:00
440e6ff3b0
Fix an error in estimating of the number of rows visited by a range scan.
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FossilOrigin-Name: d491de62fce69d93e89f65f7713972f7c2c451f7
2014-04-28 08:49:54 +00:00
2dd3cdcfab
Fix an sqlite3_stmt_status() problem caused by recent changs on this branch.
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FossilOrigin-Name: dee204092421a239f9f60ab83c3a5b3e24d1baea
2014-04-26 20:21:14 +00:00
1f8bb4b0a8
Update requirements marks to fix typos in the requirements text.
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No changes to code.
FossilOrigin-Name: f5a263658187250044afc1a74000e6f6962733ca
2014-04-26 19:23:14 +00:00
453e0261df
Allow the xfer optimization to proceed if the DEFAULT on the very first
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column of the two tables is different. This is a refinement of the
fix for ticket [f67b41381a].
FossilOrigin-Name: 349f483499dd685a8da94923b6bd810a52e5e236
2014-04-26 17:52:08 +00:00
9940e2aa45
Avoid transfering records between tables unless the default values for all columns are the same. Fix for [f67b41381a].
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FossilOrigin-Name: f8c4c495e6de1f124d205383d4bafa46accbff5c
2014-04-26 14:07:57 +00:00
8ad1d8ba38
If the user provides likelihood() data for a WHERE clause term used as part of an index key, have the planner use it when calculating the expected number of rows visited by the loop.
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FossilOrigin-Name: c51efaa5d29ee0a91b9e6a83a8dd82530670811a
2014-04-25 20:22:45 +00:00
b79c718f1a
Add test cases to ensure correct operation of joins with a virtual table
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that include DISTINCT and ORDER BY clauses. Verification for ticket
[388d01d4bb8f9].
FossilOrigin-Name: 5ada136f43ce744ae8c349eff39838eb44611b6e
2014-04-25 17:37:16 +00:00
c686929914
Enhance the sqlite3_rtree_query_info object to report on the number of
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elements in the priority queue at each level.
FossilOrigin-Name: f7dad408dd46a1e3612b6142a3afb1d0d4fcda00
2014-04-25 16:29:03 +00:00
cfc9df76e1
Store values loaded from the stat1 table as logarithmic values in memory.
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FossilOrigin-Name: 1bd74c49ddab6f53bb6eaa57907eff44c2580dd6
2014-04-25 15:01:01 +00:00
9dfaf621d1
Make sure ORDER BY clauses on joins that involve virtual tables and that
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have a DISTINCT clause work correctly. This is a candidate fix for
ticket [388d01d4bb8f9]. Test cases for that ticket will be checked in
separately.
FossilOrigin-Name: 171138122690faafde0dcab0201b90bdf02d3637
2014-04-25 14:42:17 +00:00
a01c7c70fd
When VDBE_PROFILE is enabled, ignore negative opcode times, which sometimes
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occur, perhaps due to context swaps.
FossilOrigin-Name: 4e88042f9d3e678914da96c0eb276f3d8fca5a94
2014-04-25 12:35:31 +00:00
aa9933c115
Changes to the way the planner calculates the costs of various table and index scans. Some test cases still failing.
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FossilOrigin-Name: c5a6ec0a880652dc8f4593d9f7acd58ddc3dc5f3
2014-04-24 20:04:49 +00:00
f690c14280
Improved header comment on the vdbesort.c module. No changes to code.
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FossilOrigin-Name: bf09ce24d054bc68c226064f5f28d97e0e648a13
2014-04-24 16:25:25 +00:00
0ff435a782
Reopen the orderby-planning branch and merge in the latest trunk enhancements
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and fixes.
FossilOrigin-Name: 6077ddcd93318e24b9756adaaf293ba9fb3cedf7
2014-04-24 15:06:25 +00:00
3de4df27dd
Improvements to comments. Store some extra information in SqliteThread that
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is useful for debugging.
FossilOrigin-Name: 9fb5e212089d85cdd3b4787dd69c72e6d84560b6
2014-04-24 12:28:28 +00:00
9e0ed8d4ec
Merge all recent trunk changes into the threads branch.
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FossilOrigin-Name: e2c9f71a451e44040624b9f255b4510743513019
2014-04-23 12:57:55 +00:00
f34a9fef4c
Change from using the win32-none VFS to just a query parameter.
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FossilOrigin-Name: ffceacf61905dc3553978ba5f68e133947eca2fa
2014-04-22 19:42:22 +00:00
9df245b073
Add some OSTRACE calls for consistency.
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FossilOrigin-Name: be292d559748a24ff012266a1f58ce6c027e0411
2014-04-22 19:34:16 +00:00
0bf8277196
Add the win32-none VFS which omits rollback-journal locking.
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FossilOrigin-Name: 03e3c5a8b17a219a49bfbe79b7debd27ace8ad85
2014-04-22 19:30:00 +00:00
98cf9d74f8
Fix the generation of sqlite3_rtree_query_info.iRowid and add test cases
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to verify that it is fixed.
FossilOrigin-Name: eba95ead49f8f8ce45d400186562ff0066537c5c
2014-04-21 18:13:37 +00:00
e756bfb363
Preliminary changes to support building VSIX packages for Windows 8.0 and Windows Phone 8.0 using Visual Studio 2013.
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FossilOrigin-Name: 3bf97c811a25babf760f256245c756ed6710f8ba
2014-04-21 18:00:11 +00:00
74188329ce
Be sure to initialize the sqlite3_rtree_query_info.iRowid field for the
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leaves of the R-Tree when doing a query callback search.
FossilOrigin-Name: 4394693882c04c19ebe87ef7547c57e679554397
2014-04-21 15:53:45 +00:00
a6ca7f2c1b
Fix an off-by-one error in setting the "iLevel" field of the
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sqlite3_rtree_query_info structure passed into the RTree query callback.
FossilOrigin-Name: d708f159abfb3b87e2844463088d4fb7f8da9c97
2014-04-21 15:21:19 +00:00
f0582f43dd
Comment tweaks on the test case for the [b75a9ca6b0] bug fix.
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FossilOrigin-Name: 65d2544af9adc1e2f1d193e57f8be0422fb0d5eb
2014-04-21 13:36:54 +00:00
374cd78c1d
Avoid discarding an ORDER BY clause in the case where an identical GROUP BY clauses uses an index to group, but not sort, the rows. Fix for [b75a9ca6b0].
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FossilOrigin-Name: de9a490f594183f337a2ec9e0f87792eac83548b
2014-04-21 13:21:56 +00:00
b355c2cc12
Clean up the proper-subset cost adjustment logic to make it more compact
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and easier to read and so that full branch test coverage is more easily
obtained.
FossilOrigin-Name: 9a5d38c79d2482a23bcfbc3ff35ca4fa269c768d
2014-04-18 22:20:31 +00:00
46a06bbe47
Add to speedtest1.c the --threads option for setting the
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SQLITE_CONFIG_WORKER_THREADS configuration.
FossilOrigin-Name: 5fce40c44aacf883df2e8e9472c399a6e92197b3
2014-04-18 13:57:39 +00:00
958d261bb8
Fix harmless compiler warnings.
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FossilOrigin-Name: f8f72ecb9052a4cace1db75879fb8b5131ea4f50
2014-04-18 13:40:07 +00:00
e9af1894e3
Merge recent trunk changes into the threads branch.
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FossilOrigin-Name: 8729aa3e3ed1da2e15408ef8705cbe185cd2a5ac
2014-04-18 12:38:54 +00:00
ec7c03a08b
Further improvements to the RTREE_DECODE_COORD() method, to take advantage
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of known processor byte orders when available. This makes the code 3% faster,
according to valgrind. Also add test cases to make sure the on-disk
representation is correct.
FossilOrigin-Name: 6f3e94f4b1b403cd7bfc5e8e0ffbd61b5174d3a4
2014-04-18 01:37:08 +00:00
e49b2718e0
Merge the latest changes from sessions.
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FossilOrigin-Name: d9eef5b03c7c4bb69c11eda41152ee81aed1cac7
2014-04-18 01:14:46 +00:00
dan