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Commit Graph

2052 Commits

Author SHA1 Message Date
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
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