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12,953 Commits 1,607 Branches 185 Tags
a4a8a3c22e60402ac604b70adc471d37aaae5daa
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1490 Commits

Author SHA1 Message Date
drh
a4a8a3c22e Merge support for large files on Android from trunk. 
FossilOrigin-Name: c2885c6bb24cc55178467e57e77bf71df58b3b13
 2014-09-08 15:04:24 +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
d8b77e20fc Query planner heuristic update: 
When doing a full table scan on a table that has an equality constraint on
an unindexed column, do not allow the estimated number of output rows to
be greater than half the total number of rows in the table.

FossilOrigin-Name: 73954f93c4c6f880c6e01d0d130e3fed40fd4106
 2014-09-06 01:35:57 +00:00
drh
bf9ed6f9af Merge the latest trunk changes, including the multi-threaded sorter, into 
the sessions branch.

FossilOrigin-Name: d4cce2c71e64ab7b6a65a81b88b69445ed859351
 2014-09-02 15:49:47 +00:00
drh
6b2129aaaf Disable worker threads when SQLITE_THREADSAFE=0. Set the default compile-time 
maximum number of worker threads to 8 and honor the
SQLITE_DEFAULT_WORKER_THREADS compile-time constant (which defaults to 0).

FossilOrigin-Name: 33fa0410499900dd8beb44b9a8ffbd9f4b68c8d8
 2014-08-29 19:06:07 +00:00
drh
111544cbb4 Add SQLITE_LIMIT_WORKER_THREADS for controlling the maximum number of 
worker threads.

FossilOrigin-Name: 1b598c68f32db635d1cea1373bedc434aa60cf08
 2014-08-29 16:20:47 +00:00
drh
e1ed0b0e17 Merge recent performance enhancements and the CAST operator enhancements 
into the sessions branch.

FossilOrigin-Name: 08ae974ac80fabe53f515bbbd93ccf55de8ee671
 2014-08-26 02:15:07 +00:00
drh
028696c4cc Remove the SQLITE_CONFIG_WORKER_THREADS configuration parameter. The number 
of worker threads in the sorter is now determined only by the
PRAGMA threads=N setting.

FossilOrigin-Name: e3305d4b4efcbe06945ce7f6ec0f2e864244aaf9
 2014-08-25 23:44:44 +00:00
drh
034596153d Query or change the maximum number of worker threads allowed on each 
database connection separately using the "PRAGMA threads" command.

FossilOrigin-Name: 29c5e8a7c9d7ce349a1e1d72082d23450e877b45
 2014-08-25 15:13:22 +00:00
drh
4d015c6902 Merge the recent performance enhancements implemented on trunk into the 
threads branch.

FossilOrigin-Name: dfdc900f5d1a31ee5c5f35a630c4a8253e69093b
 2014-08-25 13:27:02 +00:00
drh
2f2b2b8580 Performance enhancement in sqlite3PutVarint(). 
FossilOrigin-Name: a929be551924144c9bc7aab608404d59e479abb5
 2014-08-22 18:48:25 +00:00
drh
13f40da31d Split the sqlite3Error() routine into sqlite3Error() and 
sqlite3ErrorWithMsg(), for a slight size reduction and performance increase.

FossilOrigin-Name: cf561d1f0bb60b3d638632d20bd686dda4fa4a04
 2014-08-22 18:00:11 +00:00
drh
14a924a5cd Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use 
of local variables.

FossilOrigin-Name: 8267d82174099e548a4f78d06af0c6324c89b83d
 2014-08-22 14:34:05 +00:00
drh
da2e5862d1 Merge all recent changes from trunk. 
FossilOrigin-Name: a353a8515fb2eff86042d0c33e39772f4d04e0b3
 2014-08-06 02:03:35 +00:00
drh
58c4cbe152 Merge the latest 3.8.6 beta changes from trunk. 
FossilOrigin-Name: 68a6d5e2f43702c78057ae2f2a7345c981d24e17
 2014-08-06 01:25:47 +00:00
drh
42191f6248 Add the ability to evaluate IN operators as a sequence of comparisons as 
an alternative to the long-standing algorithm of building a lookup table.
Use the new implementation in circumstances where it is likely to be faster,
such as when the RHS of the IN changes between successive evaluations.

FossilOrigin-Name: 952868216854e8355edf57af62bd1a6bcb70ce61
 2014-08-05 19:16:22 +00:00
drh
2c5e35ffd1 Rename the internal Schema.flags field to Schema.schemaFlags. 
FossilOrigin-Name: 5ae80b3c8f032528359c8c762505ce24da8db96f
 2014-08-05 11:04:21 +00:00
drh
bb53ecb1db Enhancements to the code generator for the IN operator that result in much 
faster queries in some cases, for example when the RHS of the IN operator
changes for each row of a large table scan.

FossilOrigin-Name: 436e884215e2b33ca3fbb555362237b12827c07a
 2014-08-02 21:03:33 +00:00
drh
e80c9b9ad5 The idea of coding IN operator with a short list on the RHS as an OR expression 
turns out to be helpful.  If the list is of length 1 or 2, the OR expression
is very slightly faster, but the ephemeral table approach is clearly better for
all list lengths greater than 2.  Better to keep the code simple.

FossilOrigin-Name: e13175d3579e1045165bab091b3b28951d691704
 2014-08-01 15:34:36 +00:00
drh
3a85625d87 Begin making changes to the IN operator in an attempt to make it run faster 
and to make the code easier to understand.

FossilOrigin-Name: ee0fd6aaf94cda1dce3fe752bfe3b0f83e0043f1
 2014-08-01 14:46:57 +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
aae73527ad Merge recent trunk changes, and especially the fix for the R-Tree problem 
described in ticket [d2889096e7bdeac6].

FossilOrigin-Name: 8f1beeade0ddf802900c9d203a4fd678d1190394
 2014-07-29 12:40:45 +00:00
drh
2b49327d08 Fix the build on windows. 
FossilOrigin-Name: 2773a5f9879a106a89a3d0bc3c5bfdcb2fe43c7c
 2014-07-29 00:23:08 +00:00
drh
966d9f267f Merge recent trunk changes into the threads branch. 
FossilOrigin-Name: 163c247bd8280ab14fe577329c631c8bd884707f
 2014-07-28 15:01:37 +00:00
drh
eac5bd7870 Try to fix harmless compiler warnings reported by Fortify. 
FossilOrigin-Name: e0fa6fdc14ac5458f9200cbae124f8025ea534ea
 2014-07-25 21:35:39 +00:00
drh
2bd2c29a95 Merge all recent trunk changes into the threads branch. 
FossilOrigin-Name: 770685892c8f09b9cddb2fbb2877cfb291e19425
 2014-07-24 16:54:28 +00:00
drh
35c3d8cc75 Merge recent trunk changes into the sessions branch. 
FossilOrigin-Name: a9db017eabdefafcda87c497e8bafa07002ac0fe
 2014-07-24 16:23:51 +00:00
drh
c4747f2314 Add support for hexadecimal integer literals in the parser. 
FossilOrigin-Name: f8f79f28785db716b10c3bc9d6652b98253fd125
 2014-07-24 12:19:41 +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
1b7ddc5915 Remove a surplus function prototype. #ifdef code that is not used when 
hex integers are omitted at compile time.

FossilOrigin-Name: a5b383e077e4b277a65920f7cc202f32f07aa9ee
 2014-07-23 14:52:05 +00:00
drh
9296c18a50 Change the hex literal processing so that only the SQL parser understands 
hex literals.  Casting and coercing string literals into numeric values does
not understand hexadecimal integers.  This preserves backwards compatibility.
Also:  Throw an error on any hex literal that is too big to fit into 64 bits.

FossilOrigin-Name: 6c6f0de59bf96b79c8ace8c9bfe48c7a6a306a50
 2014-07-23 13:40:49 +00:00
drh
3526319b48 Add the OP_ReopenIdx opcode that works like OP_OpenRead except that it becomes 
a no-op if the cursor is already open on the same index.  Update the
OR-optimization logic to make use of OP_ReopenIdx in order to avoid
unnecessary cursor open requests sent to the B-Tree layer.

FossilOrigin-Name: 77f412caf0192d3e7fecb377d6d72123d8b64424
 2014-07-22 20:02:19 +00:00
drh
a45fdc7b1e The optimization of check-in [b67a6e33f2] does not work (it generates 
incorrect VDBE code) if an OR term is AND-ed with a constant expression.
So back that optimization out and add a test case to make sure it does not
get added back in.

FossilOrigin-Name: eed754fe93644f4df082eac0c0a7ffc5c78ccd10
 2014-07-22 19:14:42 +00:00
drh
53ad7e48ab For the OR-optimization, avoid generating OP_OpenRead opcodes that reopen 
exactly the same index.

FossilOrigin-Name: b67a6e33f23ce5f5d9a545fa9d6700a7ed636901
 2014-07-22 00:40:45 +00:00
drh
a7ab6d8165 Allow the SQLITE_MAX_ATTACHED compile-time option to be larger than 62. The 
default limit on the number of attached databases remains 10.

FossilOrigin-Name: 1a817ae2f35fa0396148dda2782cd4f919bf5c6f
 2014-07-21 15:44:39 +00:00
drh
6614181610 Merge the latest trunk changes into the threads branch. 
FossilOrigin-Name: ae23a65eb1547fbe8b86ab71477071990a22d31d
 2014-06-30 20:25:03 +00:00
drh
f257b4c613 Merge the latest trunk enhancements into the sessions branch. 
FossilOrigin-Name: a5d94eaba6aa12ff16d2a0af2fc752bcdb461877
 2014-06-30 20:02:55 +00:00
dan
b0b8290ecb Attempt to use sqlite_stat4 data to estimate the number of rows visited by a range query that uses a skip-scan. This code is largely untested. 
FossilOrigin-Name: 01dc8102592427b71a18c2cb82301d2266dd59c2
 2014-06-26 20:21:46 +00:00
drh
cbabb20390 Merge trunk changes into the sessions branch. 
FossilOrigin-Name: 9f18e78f039ffa89a8806810ad385bdc51bc88ed
 2014-05-29 20:29:13 +00:00
drh
ff14013496 Merge changes from the trunk into the threads branch. 
FossilOrigin-Name: 416cb091267de91b9cadee9f7453b8627570b7d3
 2014-05-29 20:24:20 +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
d963982049 Merge recent trunk changes into the sessions branch. 
FossilOrigin-Name: 2d33afe0c43cb99caa521c48b721c3b0971e967c
 2014-05-20 00:20:23 +00:00
drh
d25c69ef39 Merge all recent changes from trunk, and especially the new sqlite3FaultSim() 
interface.

FossilOrigin-Name: 43fcbd9116401f30781fdcbe55d1674d6b96311b
 2014-05-16 14:27:05 +00:00
drh
c007f61bb0 Repurpose the SQLITE_TESTCTRL_FAULT_INSTALL test-control to register a 
callback to be invoked by sqlite3FaultSim().  That test-control has been
unused since 2008-06-20 and was never used in any official release.

FossilOrigin-Name: 0d43a7ad9abe821e33e0bf83a997aa4461b1e3f2
 2014-05-16 14:17:01 +00:00
drh
a09c8855b7 Add the SQLITE_DEFAULT_WORKER_THREADS compile-time option. 
Fix a NULL-pointer dereference that can occur following OOM.

FossilOrigin-Name: e0dea89b3e9f295f80210fcca007681bf1b08692
 2014-05-03 11:22:09 +00:00
dan
2ae56f50ce Merge orderby-planning with this branch. 
FossilOrigin-Name: d9549de31741239ece060e448b592ce8fc5b8042
 2014-05-02 18:05:38 +00:00
drh
224155dd1c Fix long-standing typos in comments. 
FossilOrigin-Name: b9f91317c34d07769a95dc2f905a6ccabceb64a3
 2014-04-30 13:19:09 +00:00
drh
2e525f18e2 Merge all recent trunk enhancements and fixes into the sessions branch. 
FossilOrigin-Name: e158812c34b01ce516d26636a489509bf61d1c27
 2014-04-28 18:02:21 +00:00
dan
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. 
FossilOrigin-Name: c51efaa5d29ee0a91b9e6a83a8dd82530670811a
 2014-04-25 20:22:45 +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