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Commit Graph

2376 Commits

Author SHA1 Message Date
drh
af8f513f9d Fix the %c format character in sqlite3VXPrintf() so that it correctly
handles precisions larger than 70.

FossilOrigin-Name: 08a27440f19b7fc884464832e6105af1bf008172
2014-10-29 18:20:18 +00:00
drh
d05ab6aacf Increase the resolution of the second parameter to the likelihood() SQL
function (the probability value) so that it can handle probabilities
as small as 0.00000001.  Formerly, it ran out of precision at 0.001.

FossilOrigin-Name: 0f08924fe0c52a85a103f67bee9809e0f8f884b0
2014-10-25 13:42:16 +00:00
drh
059b2d50e1 Enhance the automatic index logic so that it creates a partial index when
doing so gives the same answer for less work.

FossilOrigin-Name: d95d0313c447f5baeabdb17284d8606331ab7d49
2014-10-24 19:28:09 +00:00
drh
d7d7147022 Change the 0x800 bit of SQLITE_TESTCTRL_OPTIMIZATIONS so that it disables
the loading of STAT3 and STAT4 content, not just the using of that content.
Change the internal name of that bit to SQLITE_Stat34.

FossilOrigin-Name: ca3b00c44ec52d209642a5ba9ef82e085fac39db
2014-10-22 19:57:16 +00:00
drh
9f07cf7b2e Take steps to avoid misestimating range query costs based on STAT4 data
due to the roundoff error of converting from integers to LogEst and back
to integers.

FossilOrigin-Name: 3c933bf95f291f7957580d823dce92c981375a5c
2014-10-22 15:27:05 +00:00
drh
92fe38ece5 Merge recent trunk micro-optimizations and the DESC index GROUP BY ORDER BY
bug fix into the sessions branch.

FossilOrigin-Name: 83d4114f2aa404e670ced33511183baacd813a01
2014-10-14 13:41:32 +00:00
drh
6cf4a7dfa6 Remove the OPFLAG_CLEARCACHE flag from OP_Column. In its place, change the
P3 parameter of OP_SorterData to be the index of the pseudo-table cursor whose
record header cache is to be cleared.  This gives a small size reduction
and performance increase.

FossilOrigin-Name: 20062f49428a2349a2dd705af570c60b499a3eef
2014-10-13 13:00:58 +00:00
drh
ab993380a2 Changes to enable compiling using VC6.
FossilOrigin-Name: 9ee5686ab3b0bca8cabdf455c75bd9410cdc5378
2014-10-10 18:09:52 +00:00
drh
78aad7cd1d Merge all recent trunk changes.
FossilOrigin-Name: abfef254721ca29b653f24bfe80e88adaa92dc6c
2014-10-10 12:56:35 +00:00
drh
d231aa3a42 Enhance (and fix) the MEMTYPE tags associated with heap memory allocations
when SQLITE_MEMDEBUG is used.

FossilOrigin-Name: ca5b789e33c4e5ce366d8f5372d086442f84e230
2014-10-07 15:46:54 +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
595db25b28 Merge the latest enhancements from trunk.
FossilOrigin-Name: 2695772c984c215649a16e1e3e18a8048a6a60dd
2014-10-01 01:52:42 +00:00
drh
b08cd3f345 Improvements to the new syntax-tree output routines: Omit the "END SELECT"
mark and instead terminate the graph at the last item.  Increase the maximum
tree depth to 100.

FossilOrigin-Name: 5ce05757aac80b99c3b2141cd301809f8e28e661
2014-09-30 19:04:41 +00:00
drh
36be4c49e4 Enable the query planner to deal with WHERE clauses that have OR terms
nested within AND terms that are nested within OR terms.  Also remove an
unused function declaration.

FossilOrigin-Name: b6b289182f6590288ebc7b9efbcb29b6b4480538
2014-09-30 17:31:23 +00:00
drh
4fa4a54f7e Remove the SQLITE_ENABLE_TREE_EXPLAIN compile-time option. Add alternative
debugging display routines: sqlite3TreeViewExpr(), sqlite3TreeViewExprList(),
and sqlite3TreeViewSelect().

FossilOrigin-Name: 4ff51325d6b41d0c59e303b573700ec80c51d216
2014-09-30 12:33:33 +00:00
drh
6382b6dc71 Merge recent trunk changes (performance enhancements) into the sessions
branch.

FossilOrigin-Name: 497367cb57345dd37793e5f369b34d12be56172e
2014-09-27 19:51:50 +00:00
drh
97348b37c2 Change that might allow SQLite to build and work using the EBCDIC character
set.

FossilOrigin-Name: ef30e0352b3d4a29749cd0872c10e45a6649ec52
2014-09-25 02:44:29 +00:00
drh
feada2df39 Do not allow parameters in a DEFAULT clause of a CREATE TABLE statement.
Ticket [78c0c8c3c9f7c1].

FossilOrigin-Name: 1ad2bc1ed4c4ac81ac67a9660761f0eeb47c7fef
2014-09-24 13:20:22 +00:00
drh
6b011d83b4 Merge all recent trunk changes into the sessions branch.
FossilOrigin-Name: 6406b77f2c447751a2fbb16f01c61cdcfd6af59e
2014-09-21 22:49:20 +00:00
drh
eb9b884c2d Improved ".selecttrace" output.
FossilOrigin-Name: c0b61f7092a7fd2c5f51db26ce7a7a5c75c227fe
2014-09-21 00:27:26 +00:00
drh
9300adbc79 Fix the SELECTTRACE_ENABLE macro so that it doesn't cause problems for
testfixture.  Add new SELECTTRACE() calls.

FossilOrigin-Name: f1ba68f131d2f03e4a7bc50cde23a7609d384279
2014-09-20 20:24:49 +00:00
drh
abd4c72357 Enable SELECT query planning tracing when compiled with
SQLITE_ENABLE_SELECTTRACE and either SQLITE_DEBUG or SQLITE_TEST.

FossilOrigin-Name: cbe0cf9ddf46f0a678c85d49bfa74e3b7712e1a1
2014-09-20 18:18:33 +00:00
mistachkin
33ac4c8bf5 Revise macro usage in 'sqliteInt.h'.
FossilOrigin-Name: 35db3e2f350ca2bc6bb9e1a647aec7f93bfb7065
2014-09-20 00:02:23 +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
drh
7ea31ccb01 Since numeric affinity is the most common case, check it first. Interchange
the NONE and TEXT affinity codes for easier checking of no affinity.

FossilOrigin-Name: 4ef4c9a7c8510203bce0941dda2f76ded8da1de2
2014-09-18 14:36:00 +00:00
drh
9588ad95c1 Do not flatten aggregate subqueries that contain min() or max() functions
so that if the min()/max() are discarded by the outer query, they still
function and cause non-aggregate expression to be evaluated on the minimal
or maximal row.

FossilOrigin-Name: 0bdf1a086b3946722f4d4b328e25917f61c14713
2014-09-15 14:46:02 +00:00
drh
fb046e7653 Fix a problem with parser memory allocation on 32-bit systems.
FossilOrigin-Name: 2f69a1fa6adc9377149ae7faa586a5d30b6a631b
2014-09-12 04:28:33 +00:00
drh
46c831bf2a Add new APIs that take 64-bit length parameters: sqlite3_malloc64(),
sqlite3_realloc64(), sqlite3_bind_blob64(), sqlite3_bind_text64(),
sqlite3_result_blob64(), and sqlite3_result_text64().
Add the sqlite3_msize() interface.
Internal memory allocation routines now use 64-bit unsigned
length parameters for safety.
Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid
a integer overflow problem.

FossilOrigin-Name: 7e4978c003867d1b532b69221013dda75ca61953
2014-09-11 18:44:04 +00:00
drh
7883ecfcd4 Enhance the sqlite3_user_add() interface to initialize the user
authentication logic.  Add test cases for the extra argument on the
end of the authorizer callback.

FossilOrigin-Name: 842c6da8f1a62bd13a1b4089a98b0835a46a2285
2014-09-11 16:19:31 +00:00
drh
32c6a48b5e Add support for the extra parameter on the sqlite3_set_authorizer() callback
and support for failing an ATTACH with an authentication-required database
using bad credentials.  The extension is now feature complete, but much
testing and bug-fixing remains.

FossilOrigin-Name: 596e728b0eb19a34c888e33d4d37978ca2bf1e00
2014-09-11 13:44:52 +00:00
drh
f442e33e3a Add the ".user" shell command and implement the sqlite3_user_add()
routine.  Incremental check-in.  The code compiles but does not work.

FossilOrigin-Name: a0455f9deb603bf91684158d911269622720fc1a
2014-09-10 19:01:14 +00:00
drh
e933b83f02 Further ideas on user authentication. Not yet working code.
FossilOrigin-Name: c8171ecd0d6f097c9e95d5f6643bae8d67f44750
2014-09-10 17:34:28 +00:00
drh
da4ca9d19c Add new APIs that take 64-bit length parameters:
sqlite3_malloc64(),
sqlite3_realloc64(),
sqlite3_bind_blob64(),
sqlite3_bind_texte64(),
sqlite3_result_blob64(),
and sqlite3_result_texte64().
Internal memory allocation routines also now use 64-bit unsigned length
parameters for safety.
Also add the sqlite3_msize() interface.
Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid a
integer overflow problem.

FossilOrigin-Name: 94954850cf2e1ec0b7f590c7f46cdc54c72558ce
2014-09-09 17:27:35 +00:00
drh
d45309796b Non-working preliminary implementation attempts on user authentication.
FossilOrigin-Name: 8440f093bac19a41d44ee352744354eab897fe4e
2014-09-09 14:47:53 +00:00
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