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289 Commits

Author SHA1 Message Date
drh
85d117bc56 Remove unreachable branches in decodeIntArray() when compiling without 
STAT3 or STAT4.

FossilOrigin-Name: 80e1baa5c225c78902e08dbea9d577ff5757847f
 2014-10-06 18:33:49 +00:00
drh
75b170b164 Avoid leaking Index.aiRowEst memory if an OOM causes a rollback which deletes 
the index before the aiRowEst deletion code in sqlite3AnalysisLoad() routine
has a chance to run.  Since the aiRowEst now might be deleted from freeIndex()
which does not always have a db pointer, make sure the aiRowEst memory is
not held in lookaside.

FossilOrigin-Name: efd87ba142723ba131fcc985db6eb45c5a3c637b
 2014-10-04 00:07:44 +00:00
dan
0c1a18b294 Fix a division-by-zero error that might occur if the sqlite_stat1 table is corrupt. 
FossilOrigin-Name: f9c053b23ece877a7fdbe82204a10592f2d24a2d
 2014-10-03 19:29:39 +00:00
dan
43085d7425 Improve the accuracy of the estimates used when searching an index for values not present in any stat4 samples under some circumstances. 
FossilOrigin-Name: e6f7f97dbc677c9f01b23142928c3fa7307c2fba
 2014-10-03 19:16:53 +00:00
drh
4583c37ca0 Fix the affinity on inserts into the ANALYZE tables. Change the affinity 
characters to be upper case, to make the P5 parameter of comparison operators
easier to read.

FossilOrigin-Name: 3f3ca76aea38d566a574f4403b375bdac32854ed
 2014-09-19 20:13:25 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
f8ede57a61 Update comments in the ANALYZE command that describe how the Stat4Accum 
objecct is passed around within the VDBE.  No changes to functional code.

FossilOrigin-Name: 9779c7a9eb1e2bd36e9286331a9314f064014d80
 2014-09-01 23:06:44 +00:00
drh
975e076681 Avoid a confusing (though correct) argument to the sqlite3_result_blob() 
function in the implementation of ANALYZE.

FossilOrigin-Name: 4cae93f8ae8fb3fe38fd5dc7d3a5ea0d11552841
 2014-09-01 22:34:54 +00:00
drh
5f1d1d9c87 Refactoring: Change "pIndex->onError!=OE_None" to use a macro: 
"IsUniqueIndex(pIndex)".  Easier to understand that way.

FossilOrigin-Name: e75b26ee357bb3d3c1a539b05d633ebf314726d7
 2014-07-31 22:59:04 +00:00
drh
f8c7e053ed Improve the performance of the ANALYZE command by taking advantage of 
UNIQUE constraints on indices.

FossilOrigin-Name: 114dcf33670fd98a1ebbac0e44f66b2d8bcccddf
 2014-07-24 23:23:26 +00:00
drh
b12879fd1a Avoid trying to allocation zero bytes when analyzing a unique non-null index. 
FossilOrigin-Name: 85e2badeeb7f7599eb6fd35512f9bd524f0b1b3f
 2014-07-24 20:25:16 +00:00
drh
9d793325b0 Avoid change tests when analyzing single-column unique indexes after 
getting past the initial NULL entries.

FossilOrigin-Name: 4690e99c07024f40fafba1db8e4487b287b788a9
 2014-07-24 19:54:20 +00:00
drh
dbd9486d5b Add experimental "costmult" logic. Only enabled when compiled with 
-DSQLITE_ENABLE_COSTMULT.

FossilOrigin-Name: 729ece40885ed7f52c5981364833fc62281a388b
 2014-07-23 23:57:42 +00:00
drh
6861b8a13f Ugh. Consecutive UNIQUE index entries are only distinct if the index is 
on NOT NULL columns.  So the previous version was not quite right.  This
check-in fixes the problem.

FossilOrigin-Name: 30033f965030a015fad15e532bcaba1314c8cc0f
 2014-07-23 19:37:21 +00:00
drh
553818a0aa Improve the performance of the ANALYZE command by taking advantage of the 
fact that every row of a UNIQUE index is distinct.

FossilOrigin-Name: 3e1e79e1335f7ad33cd35f384f2a063c4aa2253b
 2014-07-23 18:36:55 +00:00
drh
0f65cce825 When running ANALYZE, it is not necessary to check the right-most key column 
for changes since that column will always change if none of the previous
columns have.

FossilOrigin-Name: 48f40861db4fbd10725a2b8b606d44fe16d5bd27
 2014-07-22 22:46:54 +00:00
drh
25df48d967 Enhance the sqlite_stat1.stat parsing to allow additional text parameters 
at the end.  Unrecognized parameters are silently ignored.

FossilOrigin-Name: ca2a5a2c770fa94cd8db1b1b241ede058a7c58e2
 2014-07-22 14:58:12 +00:00
drh
358406fc57 Expire prepared statements after running ANALYZE. 
FossilOrigin-Name: b083a961f8ac3a6158e822574d73cd63e3103b09
 2014-07-22 14:42:16 +00:00
dan
39caccf83d Ensure that all fields are loaded from the stat4 table for records that correspond to indexes on WITHOUT ROWID tables with composite primary keys. 
FossilOrigin-Name: 21981e35062cc6b30e9576786cbf55265a7a4d41
 2014-07-01 11:54:02 +00:00
drh
ec9e55d358 Fix the STAT4 information for WITHOUT ROWID tables. 
FossilOrigin-Name: 5d8628fdffbcf837313958f0ee1ed8a2043d384e
 2014-06-30 17:07:39 +00:00
drh
971fd07135 Omit non-primary-key columns from the STAT4 samples for WITHOUT ROWID tables. 
Indexes, both rowid and without-rowid, still hold an exact copy
of the index entry.

FossilOrigin-Name: de826c31589258f0906f87d65796944103e36d5b
 2014-06-30 13:56:34 +00:00
drh
48be0c51d4 Generate complete samples for sqlite_stat4 on WITHOUT ROWID tables. 
Ticket [b2fa5424e6fcb15b5]

FossilOrigin-Name: 8cb43eddab83c68b2163441df70e0e9496d5fa33
 2014-06-30 13:32:39 +00:00
drh
48dd1d8e28 Change the name of the Index.autoIndex field to Index.idxType and provide 
symbolic names for the various values of that field rather than using
magic numbers.

FossilOrigin-Name: d16e575dacc811de0f7b58a0d1cd243678dce6c5
 2014-05-27 18:18:58 +00:00
drh
c5f246eb37 Add #ifdefs for test coverage. Add a testcase(). 
FossilOrigin-Name: be2702ce35c713b33c9b7689643b45fb0de6af2a
 2014-05-01 20:24:21 +00:00
dan
cfc9df76e1 Store values loaded from the stat1 table as logarithmic values in memory. 
FossilOrigin-Name: 1bd74c49ddab6f53bb6eaa57907eff44c2580dd6
 2014-04-25 15:01:01 +00:00
drh
fe70510aa7 Improved EXPLAIN indentation of a loop in the ANALYZE logic for STAT4. 
Mark the not-found jump of a seek operation in that loop as never taken.

FossilOrigin-Name: 0a4200f95cf46ad620b9fd91f4444114a0c74730
 2014-03-06 13:38:37 +00:00
drh
688852ab15 Add logic to do test coverage measurements on the VDBE code. 
FossilOrigin-Name: ce184c7bb16988641d37c908d9b3042456d4be3d
 2014-02-17 22:40:43 +00:00
drh
57bf4a8eeb Avoid unnecessary calls to applyAffinity() during INSERT and UPDATE 
operations, especially for table that have indices and tables for which
all columns have affinity "NONE".

FossilOrigin-Name: 35b4d6e938164fabaf30b504c54cfd9a69060cee
 2014-02-17 14:59:22 +00:00
drh
c2b23e7a98 Add test cases for skip-scan. Enhance "do_test" so that if the expected result 
is of the form "/*..*/" or "~/*..*/" it treats the expected result as a glob
pattern rather than as a regular expression.  Fix a bug in ANALYZE result
loading associated with WITHOUT ROWID tables.

FossilOrigin-Name: d3e6e9b2a74074c05429d3c341c23525504351ab
 2013-11-13 15:32:15 +00:00
drh
2ec2fb2269 Reference count the KeyInfo object. Cache a copy of an appropriate KeyInfo 
for each index in the Index object, and reuse that one copy as much as possible.

FossilOrigin-Name: defd5205a7cc3543cdd18f906f568e943b8b3a2c
 2013-11-06 19:59:23 +00:00
drh
d269461c91 Add the index7.test script for testing partial indices with WITHOUT ROWID 
tables.  Fix bugs in ANALYZE located by that script.

FossilOrigin-Name: 79befe3ac1f676272b78423b9aa5dac41435420e
 2013-11-04 22:04:17 +00:00
drh
da475b8dbc Bug fixes in the INSERT constraint checker. Refactor the Rowid handling logic 
for ANALYZE with STAT3/4.

FossilOrigin-Name: 1ea43c0f236792a3bc13e1cb330f5ff3402c2851
 2013-11-04 21:44:54 +00:00
drh
ce95d11921 Change the "idx" name of the primary key index for WITHOUT ROWID tables in 
sqlite_statN statistics tables to be the name of the table rather than the
fabricated index name (ex: sqlite_autoindex_xyz_1).  This makes it consistent
with sqlite_master table.

FossilOrigin-Name: 4ee4d3106308508a58b80e54e0afb4afb42f510b
 2013-11-02 19:34:38 +00:00
drh
ebe25af168 Update the ANALYZE logic so that it works with WITHOUT ROWID tables. 
FossilOrigin-Name: 9075770e4030b35677fbbe291f3c3c4946937a9a
 2013-11-02 18:46:04 +00:00
drh
261c02d963 Basic DELETE operations now working on WITHOUT ROWID tables. 
FossilOrigin-Name: 9eafafa31c4a2bbcf48418743e0fcb17c374e9a6
 2013-10-25 14:46:15 +00:00
drh
bbbdc83b52 The Index object now has nKeyCol and nColumn. nColumn is the total number 
of columns and nKeyCol is the number of key columns.  Currently these always
differ by one.  Refactor aiColumn[] to be of type i16 instead of int.

FossilOrigin-Name: a106ce86cd4afd1f81603826de77df1fb25e9ab5
 2013-10-22 18:01:40 +00:00
drh
0ae4f14e45 Corrects to comments on the STAT4 implementation. 
FossilOrigin-Name: e06f74d32d44f281dd21908d401184f35f9455a4
 2013-10-14 14:21:59 +00:00
drh
a7f4bf3f88 Make subroutines sampleCopy() and valueFromExpr() have file scope. 
FossilOrigin-Name: 1660efbe46439734c7dc1674994ceb86a9b41d1a
 2013-10-14 13:21:00 +00:00
drh
4f99189051 Fix various harmless compiler warnings. Change the "warnings.sh" script to 
work with STAT4 instead of STAT3.

FossilOrigin-Name: 7df06684ab36bfdad9e9aca6940b7a665c2a0cb5
 2013-10-11 15:05:05 +00:00
drh
26586e77d9 Make sure the correct printf format is used for type tRowcnt regardless 
of whether 32-bit or 64-bit row counts are specified at compile-time.

FossilOrigin-Name: e97d7d3044aa6c5e21d1faab7d5e709d92faa261
 2013-10-09 19:07:22 +00:00
drh
1f1fc0c24d Move a conditional inside of an #ifdef in order to make all branches 
reachable regardless of compile-time options used.

FossilOrigin-Name: f7cc30d45b77f58c258b21f5823c2b39a44e2bf5
 2013-10-08 23:16:48 +00:00
drh
52f6c916fb Accept the sz=N parameter on table-only lines of sqlite_stat1. 
FossilOrigin-Name: e9e932aa400f217e383cda9922fbde8a4356f57a
 2013-10-06 22:12:41 +00:00
drh
e13e9f54b0 Completely remove the iScanRatio field. The PRAGMA index_list(TABLE) command 
shows the estimated row size in the forth column.  It also generates a row
for the table with an index name of NULL.  The query planner still does not
take row size estimates into account - that is the next step.

FossilOrigin-Name: 8b4aa0c7a2122bbe60432edadf27e490e31ec987
 2013-10-05 19:18:00 +00:00
drh
d3037a4123 Further refinements of the index scanning speed logic. 
FossilOrigin-Name: e5d9371da92b4cc2c1df177cf40e0ced4d4c7421
 2013-10-04 18:29:25 +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
c28c4e5009 Experimental branch allowing different postulated scan rates for each index. 
FossilOrigin-Name: d59d97b0a8d70dc31d45db61bbc11ebb5375a224
 2013-10-03 19:21:41 +00:00
drh
1d2b3c1f8a Deterministically initialize the PRNG used as a tie-breaker in the ANALYZE 
command, so that the analysis is always the same given the same database.
This simplifies testing.

FossilOrigin-Name: 48ed8b565b84c8fa7898c2f9817c01f7e9c9182e
 2013-09-10 01:41:25 +00:00
drh
d36e104112 Combine the FuncDef.iPrefEnc and FuncDef.flags fields into a single 
new FuncDef.funcFlags field.

FossilOrigin-Name: 97b10e66e98e84755aa577f8da017bf1aea2056c
 2013-09-06 13:10:12 +00:00
mistachkin
c2cfb51525 Fix out-of-order variable declaration. Fix harmless compiler warning. 
FossilOrigin-Name: 8df95bb0b3f72222cf262174247a467c234f9939
 2013-09-04 04:04:08 +00:00
drh
30f07042df Conditionally exclude code from analyze.c that is not used by STAT3. 
FossilOrigin-Name: a48948a170056dfb87541dd5eb2773094dec6f8a
 2013-09-04 02:07:38 +00:00