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98aa1d735eb80f90b4523f50c17fc965ce967c79
Commit Graph

415 Commits

Author SHA1 Message Date
dan
116b56a2cc Fix a crash that could follow an OOM condition in the instr() SQL function. 
FossilOrigin-Name: 6e59e903e4e956617bddef0b94e5cae02d724ac8145940b57ab5b0f628759736
 2017-03-16 12:11:07 +00:00
drh
5424075137 Put the affinity() function implementation inside of #ifdef SQLITE_DEBUG. 
FossilOrigin-Name: f778f58ae4ea3e16f51b94591a2c1e563dcb0cde
 2017-01-03 14:39:30 +00:00
drh
01e64a1704 Merge all the latest changes from trunk. 
FossilOrigin-Name: c27cd8a8127b81d3176f6a5b9915c9b3c69574fb
 2017-01-03 14:30:28 +00:00
dan
3043b53222 Fix a crash that could occur following an OOM in the group_concat() function 
if the second argument is an SQLITE_BLOB value.

FossilOrigin-Name: 14d855d2b2b5b3485e0673d11405db7266b34c6d
 2016-12-30 17:40:14 +00:00
drh
1d081ab39e Strengthen the defense against OOM in the instr() SQL function. 
FossilOrigin-Name: a0971e713682a73d8c7c20511db256c20d2f6388
 2016-12-30 15:16:20 +00:00
dan
895decf6b5 Avoid passing NULL pointers to memcmp() or memcpy(), even when the 
"number-of-bytes" argument is passed 0.

FossilOrigin-Name: 56ff72ab44288296efc99a608f7edc4346366a50
 2016-12-30 14:15:56 +00:00
drh
a1a523a5bb Add the built-in affinity() SQL function. 
FossilOrigin-Name: 57e40e1cb1bcd3dd8473d2fdeecc9c7ff3d6192b
 2016-12-26 00:18:36 +00:00
drh
698a01ca2f Faster version of patternCompare() that uses new return values rather than 
an extra parameter to communicate wildcard information back up to parent
searches.

FossilOrigin-Name: a1e2b6ce3af690ae91bda3d056357205c4018da7
 2016-12-01 18:49:40 +00:00
dan
1a4a73764c Modify the patternCompare() function (used for GLOB, LIKE) to better handle 
patterns containing multiple wildcard characters ("*", "%").

FossilOrigin-Name: c5e5614d98a752738c081fecdd1e349a1a92b0e5
 2016-12-01 17:34:59 +00:00
dan
a2bfa046ea Avoid a crash that can occur after an obscure OOM in the built-in INSTR() 
function.

FossilOrigin-Name: b86b79c442a58d10aa005ba4f34095375a88d242
 2016-11-04 12:05:29 +00:00
drh
cc15313cc9 Add the experimental SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION compile-time option. 
When enabled, the "unknown function" error is suppressed for EXPLAIN and
a no-op function named "unknown()" is substituted.  This facilitiates using
the command-line shell to analyze queries from applications that contain
many application-defined functions that are not normally available to the
shell.

FossilOrigin-Name: b7f30a9ff20d580fdaecdcf2b644d09ad6c2575e
 2016-08-04 12:35:17 +00:00
drh
c80937a5f5 Small performance improvement in the LIKE function. 
FossilOrigin-Name: 5fb0c35459cf7a8662bf8cd84ac345f6fafda6cc
 2016-06-06 01:48:14 +00:00
drh
f602a16123 Test cases for SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION. 
FossilOrigin-Name: debafa5efd37ac60e030d0963ce8e7c4f51a0f10
 2016-04-21 01:58:21 +00:00
drh
191dd06195 Revert sqlite3_enable_load_extension() to its original long-standing behavior. 
Add SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION which will enable only the C-API and
leave the SQL function disabled.

FossilOrigin-Name: b2ae5bfa32e608625bd177907596df3dbc2212e1
 2016-04-21 01:30:09 +00:00
drh
1a55dedf7b <b>API Change:</b> Modify sqlite3_enable_load_extension() so that it only 
enables/disables the load_extension() SQL function, and leaves the C-APIs
enabled at all times.  In this way, applications can enable extension loading
for the C interface without having to expose that capability to the SQL.

FossilOrigin-Name: edb454e45ae008e051e2f48d704a855b0c3e4be9
 2016-04-20 00:30:05 +00:00
drh
80738d9c3e Improvements to the application-defined function mechanism so that it is 
more compact and runs faster, especially when the application defines
thousands of new SQL functions.

FossilOrigin-Name: 3201fbcc5105d23132e6b8b7ac825e66af4f8a39
 2016-02-15 00:34:16 +00:00
drh
4a642b6060 Improvements to the way that OOM errors are processed. 
FossilOrigin-Name: c3ef03478a5788c855b3aef385d43ae7f494f440
 2016-02-05 01:55:27 +00:00
drh
5f4a686f8c Simplification and size reduction to the printf logic. Remove the bFlags 
parameter from sqlite3VXPrintf() and sqlite3XPrintf().  Use sqlite3XPrintf()
instead of sqlite3_snprintf() for rendering P4 values in EXPLAIN output.

FossilOrigin-Name: 0bdb41c45aa1cc8e5c136aaa6605d54b401483bd
 2016-01-30 12:50:25 +00:00
drh
fb3972602c Case folding in the LIKE operator should look at all bits of the character, 
not just the lower 8 bits.  Fix for ticket [80369eddd5c94].  This is a
back-out of check-in [0a99a8c4facf] with a testcase added.

FossilOrigin-Name: 204432ee72fda8e82d244c4aa18de7ec4811b8e1
 2016-01-20 14:22:41 +00:00
drh
07e8347221 Slightly smaller and faster LIKE/GLOB comparison implementation. 
FossilOrigin-Name: 5dddcc78eec5bcd0c7e8fe1b70875ce775488f0c
 2016-01-11 03:48:18 +00:00
drh
31d175dde4 Remove unnecessary tests from the LIKE pattern matcher. Slightly faster and 
slightly smaller, and it should also now works with EBCDIC.

FossilOrigin-Name: 0a99a8c4facf65ec67d8d86108c9a3f723f7cbd6
 2015-12-30 14:06:22 +00:00
drh
41d2e66ef3 Add the SQLITE_LIKE_DOESNT_MATCH_BLOBS compile-time option. 
FossilOrigin-Name: 9e1d6d4c391ff90077f0d1cdeb567969fee9f747
 2015-12-01 21:23:07 +00:00
drh
8b4a94adc1 Add the sqlite3_strlike() interface, which might be useful for implementing 
LIKE operators on virtual tables.

FossilOrigin-Name: e70ec71d6883f2f8fc75301ff985bccb5aa06127
 2015-11-24 21:23:59 +00:00
drh
03bf26d90d Not only date/time functions, but also functions like sqlite_version() and 
changes() need to be prohibited from use inside of indexes.

FossilOrigin-Name: 487131303980f15dd5e1b6695b4f29efda229eb8
 2015-08-31 21:16:36 +00:00
drh
6bacdc21ae Fix compiler warnings. Get the new sqlite3_result_zeroblob64() working 
on loadable extensions.

FossilOrigin-Name: f8991e6f726485301c80d2dbb05e7d5c0d283b5d
 2015-07-24 17:14:03 +00:00
dan
a4d5ae8fa2 Add the sqlite3_result_zeroblob64() API. Use it in the SQL zeroblob() function. 
FossilOrigin-Name: c6445b9fb4d7d1a8479436d7d183bad754a01615
 2015-07-24 16:24:37 +00:00
drh
53e66c3cda More robust handling of zeroblob() with oversized arguments. Fix fuzzcheck 
so that it can be run with limited heap memory.

FossilOrigin-Name: 4e3e516a42059c97f42a7eb59bdf5cded0ff843a
 2015-07-24 15:49:23 +00:00
drh
b0870486aa Performance optimization and comment fixes for the LIKE and GLOB operators. 
FossilOrigin-Name: c89d772628564a808173f6f73bc1798ec714276b
 2015-06-17 13:20:54 +00:00
drh
c049057242 Cleanup of the sqlite3StrAccumInit() function. No functionality changes. 
FossilOrigin-Name: 7952c32268aa650d9ee946d5bfe190f712e3bbe6
 2015-05-02 11:45:53 +00:00
drh
f3cdcdccbe Use sqlite3_malloc64() in place of sqlite3_malloc() internally. 
FossilOrigin-Name: 48f553b05c05373c0af4b9c3a542979db3a2ee19
 2015-04-29 16:50:28 +00:00
drh
a9e03b1b82 The valueFromFunction() routine is better able to handle OOM errors. 
Omit unreachable branches.

FossilOrigin-Name: 8fb6bd9be59d6b04e922d7b246aaefd4851539b6
 2015-03-12 06:46:52 +00:00
drh
16897072b5 Refactor some jump opcodes in the VDBE. Add JumpZeroIncr and DecrJumpZero. 
Fix the LIKE optimization to work with DESC sort order.

FossilOrigin-Name: 26cb5145bf52f8c3fffa8c69b6c24aee4d974883
 2015-03-07 00:57:37 +00:00
drh
883ad04985 First small steps toward brining trunk and apple-osx closer together. 
FossilOrigin-Name: 28284ccc0d7301503f6d2d7bee9093738d52e331
 2015-02-19 00:29:11 +00:00
drh
643091f071 Fix a typo in a requirements mark on the abs() SQL function. 
FossilOrigin-Name: b1e6c02f8b9a2afaa12ac15a33e3f698c3be27d6
 2014-11-20 23:21:23 +00:00
drh
a15cc47f81 Simplifications to the SQL function and aggregate calling procedures. 
FossilOrigin-Name: 3467049a1705b49905ea88a5c6becb6fe318f2fa
 2014-09-25 13:17:30 +00:00
drh
9fdfdc893b Still more performance enhancements to the LIKE and GLOB operators. 
FossilOrigin-Name: 6c8924cacc2b875270770fed2cc3b1884f57a655
 2014-09-25 11:08:57 +00:00
drh
88b3322f27 More performance optimization for the LIKE and GLOB operators. 
FossilOrigin-Name: 5ab1023d6cfe31fa8a194804b8216058977ac973
 2014-09-25 03:51:37 +00:00
drh
328d913cbd Size reduction and performance improvement in the LIKE and GLOB operators. 
FossilOrigin-Name: b2c89ef49cd19b8031a8149a2dc47cea07dd04e0
 2014-09-25 00:56:00 +00:00
drh
035e563bf6 Reorder the elements of the Mem object for a small size reduction and 
performance improvement.

FossilOrigin-Name: 0be3019ed794c10de67dfd645ceea7d45815bc4b
 2014-09-16 14:16:31 +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
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
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
bbf483f855 Change the name of the _texte64() interfaces to just _test64(), without the "e". 
FossilOrigin-Name: 6ab76c5fedfe568b0f0f34a600f9135bf6558148
 2014-09-09 20:30:24 +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
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
ede7ae31f1 Fix an obsolete comment in the func.c source file. No changes to code. 
FossilOrigin-Name: 5c6bb57d90bad32785d6d9cdf110a825bbc5ec73
 2014-08-06 11:58:40 +00:00
drh
03202a97f8 Add the likely() function for symmetry with unlikely(). The likely(X) 
function means the same thing as likelihood(X,0.9375).

FossilOrigin-Name: 38965484199153e3e5b999f5196c1d66e5296f60
 2014-06-17 16:11:28 +00:00
drh
8009c9b439 A better fix for the group_concat() problem. 
FossilOrigin-Name: 1c086deebd0eb442918972e4b9185a5a0db3b8c3
 2014-05-07 20:24:00 +00:00
drh
86a1119133 Ensure that the sqlite3StrAccumAppend() routine is never called with a NULL 
second argument.  Doing so is harmless when N==0, but it causes an assert()
to fail that was placed to quiet static analyzers.

FossilOrigin-Name: f03fbf3700d9d4a654e3aa2e5caa810a8416bed9
 2014-05-07 18:21:56 +00:00
drh
eacc050f30 Make sure the group_concat() function returns an empty string, not a NULL, 
if it has at least one input row.  Fix for ticket [55746f9e65f8587].

FossilOrigin-Name: 0deac8737545a020d344be96fff16660a7977ab8
 2014-05-07 17:19:31 +00:00