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Commit Graph

494 Commits

Author SHA1 Message Date
drh
5ed044e893 Fix another problem from [c63e26e705f5e967] involving infinities and the 
Kahan-Babushka-Neumaier summation algorithm.  Problem reported by
[forum:/forumpost/23b8688ef4|forum post 23b8688ef4].

FossilOrigin-Name: 45d272ef38d5ee6189f81369aefb8e3ac35868a67687012d93c84f2bbc42520a
 2024-03-19 10:16:17 +00:00
drh
f79b0bdcbf The quote() SQL function should convert +Inf into 9.0e+999 and -Inf into 
-9.0e+999.  See [forum:/forumpost/6675b25108|forum post 6675b25108].

FossilOrigin-Name: 85dd79a6edecfc8c6307c6d215998f76dab086aa14528ddc64eb9955501becfd
 2024-02-26 22:28:21 +00:00
drh
8dca1905ed Ensure that the replace() SQL function always returns a TEXT value even 
when its first argument is numeric and its second argument is an empty string.
Fix for the issue reported by
[forum:/forumpost/3776b48e71|forum post 3776b48e71].

FossilOrigin-Name: 01868ebcd25fadb2034da234c0636e82d07c5abc902ef66493cadfc988e74d7b
 2024-01-20 13:18:22 +00:00
drh
d5e040b6f0 Add string_agg(X,Y) as an alias for group_concat(X,Y), for compatibility 
with SQLServer and PG.

FossilOrigin-Name: b91c19bf2680f60d7826ab5d9e7902e2dc2a55d847bbea565a6489d47f2cc8f1
 2023-10-20 20:19:30 +00:00
larrybr
99d43979d3 Avoid potential overflow in hex(). [forum:/forumpost/7ac0c9c5ea|See forum post 7ac0c9c5ea.] 
FossilOrigin-Name: 2e968114fd0e60eebcc088dec02684e10b06ac1ec42d6bedb5287362f5cbf032
 2023-10-13 01:39:47 +00:00
drh
51e3f7a1c3 Fix the length of the string in the new concat() and concat_ws() functions. 
FossilOrigin-Name: 325243226520376f4a142864ae3fb98866f25bff4dc50a6b648ef98428a7169f
 2023-10-02 17:06:28 +00:00
drh
43d71eb892 Remove an ALWAYS() from a branch that can in fact be false following an OOM 
fault.

FossilOrigin-Name: 3a1feb1c469d3dd50e2558581199b16bfd59b9d5bcb0de5f1a8f0ec30a17b4d1
 2023-10-02 15:56:37 +00:00
drh
7bb5a6db40 Fix the AVG() and TOTAL() functions (after the SUM() fix of [77d3dcd283595c52]) 
so that they work with infinitites.  Fixes a bug introduced by check-in.
[c63e26e705f5e967].  Bug reported by
[forum:/forumpost/8960fb40cc|forum post 8960fb40cc].

FossilOrigin-Name: 6df6f17ccb404c648076ccff4200d0eb5437f0e3e82424bf3da5ea682b107bb4
 2023-08-30 16:03:27 +00:00
drh
e1e67abc5c Add support for the CONCAT() and CONCAT_WS() SQL functions, modeled after 
the PostgreSQL behavior.

FossilOrigin-Name: 0b434ca7aa19eff4ad134a8c6f88f6a7ccab88864faa55e93579a2462d8ac3bc
 2023-08-29 15:24:41 +00:00
drh
bd953dfcad Fix an issue with infinity handling by the SUM() function that goes back 
to the extended-precision SUM() enhancement of
[check-in c63e26e705f5e967].  Problem reported by
[forum:/forumpost/1c06ddcacc86032a|forum post 1c06ddcacc86032a].

FossilOrigin-Name: 77d3dcd283595c52f24c07fc59ba60c9133b71c440cf3f799cf48c907c6fae3e
 2023-08-28 12:20:18 +00:00
drh
00eee07911 Fix the PRAGMA case_sensitive_like command so that the LIKE function continues 
to be innocuous after the PRAGMA.
[forum:/forumpost/925dc9f67804c540|Forum post 925dc9f67804c540].

FossilOrigin-Name: 84c268c34cba7207a90dad2a8e972ce90c85304e91f4933c76963822ad1ae48b
 2023-08-15 11:58:22 +00:00
drh
61a5b6e3bc Fix a harmless use-of-initialized-value warning from OSSFuzz that results 
from recent large string optmizations.

FossilOrigin-Name: 1a6b3dd1c40277a0d0f0bb562ddc4868aadd632fc2d29be1b17bb33fc22c46c8
 2023-07-22 15:21:41 +00:00
drh
37fd50df1f Two minor improvements to sum(), one of which was inspired by 
[forum:/forumpost/af5be98dbc|forum post af5be98dbc].

FossilOrigin-Name: a0d3e7571aded8d1e03908059d2d5aa5d62ec49bff099cb38f6f35df5e4b18b5
 2023-07-19 09:52:10 +00:00
drh
4c40b7b819 Always use the "LL" suffix on 64-bit integer literals. 
FossilOrigin-Name: 07d95ed60f0a17ea13b4bc19c2ab2ec9052fedd27c9e1e57a1ec6e3a6470e5b7
 2023-07-08 17:42:24 +00:00
drh
7d0103bb06 Improved handling of integer inputs to the new sum() implementation. 
FossilOrigin-Name: 31561c63bde6af2210296810fd66232b935033b4d26273a6b8a52142c54b4e12
 2023-07-06 20:34:06 +00:00
drh
26cd8bc1af Fix minor inaccuracies in the new sum() algorithm. 
FossilOrigin-Name: e3f7a960c9bd8e84cd70f0585bb955d043604a92001d0e2bf6c1216bb1fd7221
 2023-07-06 14:45:53 +00:00
drh
45d7562843 Experimental attempt to boost the accuracy of sum() using the 
Kahan-Babuska-Neumaier algorithm.

FossilOrigin-Name: ebc5edd3b10c1102b07b9fb0d6837266b81e55504ef883b9b8a7ad5e8ab29dd2
 2023-07-06 13:19:10 +00:00
drh
453be55b85 Reinstate the fpdecode() SQL function for testing, but only when compiled 
with SQLITE_DEBUG.

FossilOrigin-Name: 07eab52e0801bb0e4743b304a06ad16e18cdf8eaa18c0faf8d47a1f5d8576ea0
 2023-07-01 18:33:26 +00:00
drh
17c20bb15e Improved rounding policy. 
FossilOrigin-Name: 6f1122e942b8269552daaf13d647d200d8546ec25f36310d67037c6b58d09976
 2023-07-01 17:56:00 +00:00
drh
9ee9444a0a Improved response to Infinity and NaN. Remove the termporary fpdecode() 
function.

FossilOrigin-Name: 76ab8ae809a47a66688e2d50c20dc87ce946d82e9ffebb3adda55c451fad07fc
 2023-07-01 15:23:24 +00:00
drh
002330dc48 Add decimal rounding to the sqlite3FpDecode() routine. 
FossilOrigin-Name: 27871140caa833f0bc0962e44356993938e93dcf81c1074382b1560a3e1aeb61
 2023-06-30 19:41:57 +00:00
drh
a1b0ff1735 Experiments with a new algorithm for converting ieee-754 binary64 numbers 
into decimal.

FossilOrigin-Name: e923405e448385085224f9289991b303d86b02763535ea77d6fcee98ba6fc1f2
 2023-06-30 18:35:43 +00:00
drh
48114d08cf Completely unwind the enhanced precision sum() from [a915f15a916af698] so 
as not to offend UBSAN and OSS-Fuzz.

FossilOrigin-Name: 85be05b66ef975f02a3e7b2984bcab97d9280c7f3b6ee1e16718de549f240d46
 2023-06-30 14:01:09 +00:00
drh
60f41362cf Make the sum() function less precise and slower in order to avoid 
harmless signed integer overflow UBSAN warnings from OSS-Fuzz.

FossilOrigin-Name: 1be0646a2c352dbf03d2af87fd48b6f9edfd68666790ac6863144ac95f3e0621
 2023-06-30 11:51:36 +00:00
drh
12b198f1a2 Use ideas from T. J. Dekker in "A Floating-Point Technique for Extending the 
Available Precision" (1971-07-26) to enhance the accuracy of the SUM()
aggregate function in cases where input magnitudes vary wildly.

FossilOrigin-Name: 439fc00fee62b4db3751860485e21a99cae4fd1f5d911b2c08651a1466245ecc
 2023-06-26 19:35:20 +00:00
drh
077efc2730 Optimize the argument to the octet_length() function so that it does not 
attempt to read content from disk.

FossilOrigin-Name: 8b8ea4e3f52d96cc217bd1fb27ca4a83489ef1f250756ed2f790d1b0ee529a3a
 2023-06-22 21:19:37 +00:00
drh
d6c671e626 Merge recent trunk enhancements into the octet_length branch. 
FossilOrigin-Name: d35c214811aac7dec0000ca2aa77231f74a7963dd0c53cf25a65ade5ef0f8dc0
 2023-06-22 13:01:02 +00:00
larrybr
55be21647e Fix straggler misspellings and tidy the custom dictionary. Also include pickups from [forum:/info/c61fb09afd|forum post c61fb09afd]. 
FossilOrigin-Name: 8c291d99946eb32b20b743921202f9c7cfb716268ff526817b27adbb7942e40b
 2023-06-07 17:03:22 +00:00
larrybr
bc91738e66 Add a C-source spell-checking facility. make misspell (on Nix) 
FossilOrigin-Name: 26c1bb4bd9e9f56613c3aa87407a7f562fd4ebde5bfd6dece02078001d9a45f8
 2023-06-07 08:40:31 +00:00
drh
b3d7f1c2db Prototype implementation of the octet_length() SQL function. 
FossilOrigin-Name: 2db989c8635f7e89b3ea58d1fde94787fced039ac1a118d9b6362811eda73f87
 2023-06-03 11:22:30 +00:00
drh
e030619109 Updates to compile-time option usage and especially to the compile-time option 
test script in tool/omittest.tcl.

FossilOrigin-Name: fece588b186c4f9f76d626313e35336fd5681e966e9bd0fa1053b147c4e3c315
 2023-05-05 14:16:31 +00:00
drh
3c2688d137 Provide -DHAVE_LOG2=0 and -DHAVE_LOG10=0 compile-time options for use on systems 
that lack the log2() and log10() standard math library routines, to cause
SQLite to substitute its own alternatives.

FossilOrigin-Name: 7ee22f95e7a7d8650f961f20e304e56c7813e624f05655d7392ca9347748270f
 2023-02-23 01:52:54 +00:00
drh
3c7e90b894 Fix a harmless UBSAN warning in debugging code of the new unhex() function. 
FossilOrigin-Name: 315574d5cbe5c805ff2163052d986b054985984fb45bfb064d1a7b39a22b90eb
 2023-02-18 15:50:23 +00:00
dan
a50db438eb Update unhex() to allow a second argument, specifying a set of characters that are permitted to appear between pairs of hexadecimal digits. 
FossilOrigin-Name: 66c8562690b19f17972589611810e1dccad3a48777acb05208289c1f77076f71
 2023-01-24 17:19:47 +00:00
dan
e3c11d55db Add experimental user function unhex(). 
FossilOrigin-Name: dbe424b5db33ce2c7562dfb44daf2969cf3074234cc891eb9b8d0d907faf6a78
 2023-01-23 14:11:34 +00:00
drh
3547e4997f Fix lots of harmless, nuisance compiler warnings, mostly unused parameter 
warnings in extensions.

FossilOrigin-Name: c14bbe1606c1450b709970f922b94a641dfc8f9bd09126501d7dc4db99ea4772
 2022-12-23 14:49:24 +00:00
drh
79b9bc4452 More efficient implementation of large precisions on the "%c" format for 
the built-in printf().  This is an effort to avoid a reported
timeout on a (ridiculous) query generated by OSSFuzz.

FossilOrigin-Name: 371f9b88387a44a5f820279d79733d1deb7eafc72f320ec47a11679bbdbb49ef
 2022-12-21 19:11:56 +00:00
drh
3c1572ddb4 Use the log10() and log2() functions from the standard C library to implement 
the equivalent SQL functions, in the hope that this will prevent reported
precision problems.
See [forum:/forumpost/cfceb1230bdcfd84|forum post cfceb1230bdcfd84] and the
surrounding thread.

FossilOrigin-Name: 7c572d02e60a83b36543ba4d9d45f61e9fc111b61fee085410c2d87558c732d6
 2022-11-17 14:40:33 +00:00
drh
42dddb97de Enhance the sqlite3_strglob() and sqlite3_strlike() interfaces so that they 
will do sensible things with NULL string pointers.  This is an extra layer
of defense against bugs such as reported by
[forum:/forumpost/730b554179|forum post 730b554179].

FossilOrigin-Name: 8ba9c884bded52e3e044ff39c826c04838e7c31f05d802f4a14d9ce5a01ab721
 2022-10-25 13:44:18 +00:00
dan
2bc4a6cad0 Fix a problem in the LIKE and GLOB operators that may occur when the character immediately following a "%" or "*" wildcard is U+80. Reported by [forum:61bf7ccbdf]. 
FossilOrigin-Name: 2da677c45b643482eec39e4db7079c772760bc966dc71bf6c01658cc468f5823
 2022-10-14 15:10:36 +00:00
drh
645682a7c7 Move the sqlite_offset() function implementation to be an in-line function, 
thereby avoiding special case code and freeing up a bit in the
FuncDef.flags field.

FossilOrigin-Name: 1c9812c458bd229c862efe5df1b64fae333da9871c8756b5ae4605a81bcda4b5
 2022-06-01 11:05:59 +00:00
drh
724e298e9c Slight increase in the accuracy of log10(). 
FossilOrigin-Name: c48a735bd4a1dbd541aed5937c25fc0c606c4263d8ee94cae30a06b1a7b26d9a
 2022-05-25 13:10:29 +00:00
drh
97a985e0c5 The sqlite_offset() function should be non-deterministic. 
dbsqlfuzz 3df8230bb940870db87ffca2c0fc759c1e7fa356.

FossilOrigin-Name: e1a185e60afd32d3b25278dee42049920759ccd8fe709161007f5daa4a048693
 2022-03-06 11:43:06 +00:00
dan
af7b8dcb58 Avoid dropping SQLITE_TOOBIG errors in the quote() function. 
FossilOrigin-Name: 115c3051a1ff7567e84f14fc4c49efe61bc2850248533449b0195c305ab6516e
 2022-02-12 13:37:27 +00:00
drh
69b0ce33fd Fix various harmless compiler warnings. 
FossilOrigin-Name: 70049342d5ad57ea3e863bba19253934b868bacdd1c26c9371bac024a829badf
 2022-02-04 13:15:01 +00:00
drh
cd379b8a53 Merge trunk enhancements into the json-in-core branch. 
FossilOrigin-Name: ea755771699dcbffe0ddfd204d42fae9b6e79e107485c725b8eb6caab92aacb8
 2022-01-09 19:36:39 +00:00
drh
9d44f18b3c Add a new built-in subtype() function. 
FossilOrigin-Name: a25f4ce255c034fc694c33728aedb98289ebccda9c48920829ef780b92b8faee
 2022-01-09 16:54:02 +00:00
drh
6bcd58572b Add function format() as an alias for printf(), for compatibility with other 
systems.

FossilOrigin-Name: 68bffc612c467b2419bf5fe85a8ca16b787003e0e8c11f7c051a879f5865b847
 2022-01-08 21:00:38 +00:00
drh
9dbf96bd70 An attempt to integrate the JSON functions directly into the SQLite core, 
rather than holding them as an extension.

FossilOrigin-Name: 583b47d865fb8d2c9ae4d3a4e70356a8a758978efb0a282f6b19775bf41fb748
 2022-01-06 01:40:09 +00:00
drh
ef95d5583b Factor out the logic that does quoting for the SQL quote() function, so that 
it might be reused for other purposes.

FossilOrigin-Name: 8e98ba1eeb1a5a61b7cb2de337ef8bca3d07494266a50d62b9c6bc60ad0a955f
 2021-12-10 21:01:24 +00:00