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98aa1d735eb80f90b4523f50c17fc965ce967c79
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415 Commits

Author SHA1 Message Date
drh
589c787620 Chagnes the ESCAPE clause on the LIKE operator to overwrite wildcard 
characters, in order ot match the behavior of PosgreSQL.

FossilOrigin-Name: 11e0844f71e8f2d27ce9363fb505e02fd7795c61dae0b3886cf0d8df4484dd97
 2020-03-19 18:13:28 +00:00
drh
78b5220328 Fix a NEVER() macro that can be true if compiled with 
SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION.
Ticket [b985f0bd1636d9bc]

FossilOrigin-Name: 9f0f5d593a383ec2bebb6513ad566813f5b3dc6f052c61bcd76e8ac557bbb062
 2020-01-22 23:08:19 +00:00
drh
ef9f719d0b Fix #ifdefs so it compiles cleanly with all SQLITE_OMIT compile-time options. 
Update compile-time option testing.

FossilOrigin-Name: 7584e4b649d57767aac3906da6b06549d5b772aaa69f469c623ae5da834d54d5
 2020-01-17 19:14:08 +00:00
drh
171c50ec38 New test-only SQL functions: implies_nonnull_row(), expr_compare(), and 
expr_implies_expr().  The SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test-control
is modified to toggle internal function access on and off for a single
database connection.

FossilOrigin-Name: 473892a8eceacf24d57fd0c72ff2a0b8be4e0d75e0af7a30bdb24fbc3b453601
 2020-01-01 15:43:30 +00:00
drh
25c4296bd9 Factor out code generation for in-line SQL functions into a separate routine 
inside of expr.c.

FossilOrigin-Name: 586a65a28fc6cac77309612abc32a2e1017c65e0387f9f438f5d8ac8406da8eb
 2020-01-01 13:55:08 +00:00
drh
64de2a5f7b Also set the SQLITE_DIRECTONLY flag on the load_extension() function. 
FossilOrigin-Name: 3bd095a53119c368fe30e539983588b27957203344cf427405b9a64784b8eba7
 2019-12-31 18:39:23 +00:00
drh
9d70284022 Fix an OOB read in the INSTR() function introduced yesterday by check-in 
[3fb40f518086c1e8] and detected by OSSFuzz.  The test case is in TH3.

FossilOrigin-Name: d49047c1b59bbfd05204af9973cdb0fab51b4d2661b550aec10d917fff94dc9b
 2019-09-18 11:16:46 +00:00
drh
97b0250599 Fix the instr() SQL function so that it makes a copy of its argument 
before changing the datatype, since the datatype affects processing.
Also fix the sqlite3_value_text() routine so that it always works even
for values obtained form sqlite3_value_dup().  Ticket [587791f92620090e]

FossilOrigin-Name: 3fb40f518086c1e8d11eb1f4134e965450dbedfa4277bce39ef1e969fc747d38
 2019-09-17 03:16:29 +00:00
drh
175b8f06f7 Remove support for STAT3. The sqlite_stat3 tables are ignored, if they 
exist.  STAT4 continues to work as it always has, and as it is a superset of
STAT3 is the recommended replacement.

FossilOrigin-Name: 1e17ea2fd1df4ad49138c787c8fe3207dd0c25c93f9001d52a9b69f8c12e841c
 2019-08-08 15:24:17 +00:00
drh
55700bcd72 Remove code in the round() SQL function that became unreachable due to 
the optimization of check-in [e95138f5f4febde5]

FossilOrigin-Name: b141bae3f6d16c0ebb59dac9b02086a4370839e71ade34004f647b09b1083d1d
 2019-06-07 22:51:13 +00:00
drh
9a2782293c When casting string values into numeric and the string has a prefix that looks 
like a number but total string is not a well-formed number, then take extra
care that the result is either integer or real depending on what the prefix
looks like.  Fix for tickets [e8bedb2a184001] and [4c2d7639f076aa].

FossilOrigin-Name: 67a68af5578f08d2be2e48cf4fd12a6cf35a09c47d259deda81950f7ee1f02f7
 2019-06-07 22:26:08 +00:00
drh
84422db987 Optimization to the round() SQL function for large input values without a 
fractional part.

FossilOrigin-Name: e95138f5f4febde598f39e031d6e4f4d5ad0adbd8dcdd34fd0baaa78ab393417
 2019-05-30 13:47:10 +00:00
drh
05d7bfd0bb Fix the round() SQL function so that it handles infinities correctly. 
FossilOrigin-Name: db9acef14d49212108c8082cc15a9b9b4a56b8afe4fe1104ddf62783739c1fbe
 2019-05-10 12:06:47 +00:00
drh
ea5c040f87 Simplification to the logic underlying PRAGMA case_sensitive_like. 
FossilOrigin-Name: ef0015fde4c87e992ffd3d7dea8586951bdd65ff98d30d436b126b85b1cc9c74
 2019-05-08 19:32:33 +00:00
drh
08652b5ea0 Provide the SQLITE_OMIT_CASE_SENSITIVE_LIKE_PRAGMA compile-time option to 
omit the case_sensitive_like pragma.  This change, in combination with
documentation changes, is the current solution to ticket
[a340eef47b0cad5].

FossilOrigin-Name: eabe7f2d4ff0e0dd868dcab7ec1d4a9168a25f80d3a52f0eeea2f90bd33782f2
 2019-05-08 17:27:18 +00:00
drh
cf83323936 Small performance increase and size reduction in the implementation of the 
LIKE and GLOB operators.

FossilOrigin-Name: f97626f921dafe596b615a168ef31987f4a1c0b52956443e1a5c1148b49cab74
 2019-04-30 11:54:36 +00:00
drh
8e0f794d17 Enable the LIKE optimization when the ESCAPE keyword is present and the 
PRAGMA case_sensitive_like pragma is ON.

FossilOrigin-Name: 6ae4b8c525f446ddb0e0bdd5e4e01e06e2ab975e3effa42fce6a1102b3a39830
 2019-02-27 23:05:14 +00:00
drh
3cb79202f8 Use the full 64-bit integer value in the argument to randomblob(). 
FossilOrigin-Name: 05df5f7aeaf2132810452e8871132d1e66650a841991cb2a9ce32f2d03e20bf4
 2019-01-18 14:53:15 +00:00
drh
c930b405f0 Performance improvement on the instr() function, especially for large 
haystacks.

FossilOrigin-Name: ce51f1a2b6a1789a5876e01cf829e45d84f3851d135a2fa5c44a56f948673a60
 2019-01-08 15:18:24 +00:00
drh
c7bf57168a Fixes for various harmless compiler warnings. 
FossilOrigin-Name: 5023b1b85b883a716a5da673740b6effe214ee0490f4ca45f161bb8b04784366
 2018-07-09 22:49:01 +00:00
drh
a546ef219e Simplifications to the implementation of the sum() SQL function. 
FossilOrigin-Name: a8b13002378fc4ef0b41c367b44b67bf2b28b6624303c087a3c6d657b5bfe32e
 2018-07-07 20:55:16 +00:00
drh
fd4b72853a Add ALWAYS() macros on results of sqlite3_aggregate_context() calls in 
xInverse() implements, since they can never fail.

FossilOrigin-Name: fdef2a921d451c66ca535021d08af3ec1ab53283da2d2979378a799fd8731ef9
 2018-07-07 19:47:21 +00:00
dan
683b0fffee Fix a problem in the xInverse method of window-function group_concat(1). 
FossilOrigin-Name: 73391283101288251fe5d030ba12bcdabe8a781d41086afe3564c58c05d0fd5c
 2018-07-05 18:19:29 +00:00
dan
d736829e8b Fix a problem in the xInverse callback for the built-in sum() window function. 
FossilOrigin-Name: b6563647382634588ebe5c6a3c35c65a321dc1b3732c809d48ce46759b9dd80f
 2018-07-02 17:45:59 +00:00
dan
6b4b88208e Fix a crash caused by a LIKE pattern that consists of a single escape 
character.

FossilOrigin-Name: bb9bfc3a12dfb89b1c58f5551cdc89ab7b0fbe03f285f2ed86611786ed02ffd9
 2018-07-02 15:03:50 +00:00
dan
7262ca94cb Fix a segfault caused by invoking a regular aggregate as a window-function. 
And some problems with count(*) when used as a window-function.

FossilOrigin-Name: 4f3c8a82fd1c5b14d84f2301e34cfc8d52fe4b3a60840c39e895c11f2da529d9
 2018-07-02 12:07:32 +00:00
dan
67a9b8eded Omit all window-function related code when building with SQLITE_OMIT_WINDOWFUNC. 
FossilOrigin-Name: 5f04b016467342b5a796bf702ed25b621eb86f2961c1e703d276c93f2cb6aa89
 2018-06-22 20:51:35 +00:00
dan
6fb2b54ceb Fix a problem with using min() or max() as a window function. 
FossilOrigin-Name: 801074ce63d3f4825cc9fa508c42629a9f74e7f9e35c5f238343bb1cff4fbae1
 2018-06-19 17:13:11 +00:00
dan
660af939b0 Add new API function sqlite3_create_window_function(), for creating new 
aggregate window functions.

FossilOrigin-Name: da03fb4318fd2613ec5c5b109a3974ac1120c19ed16bed4ca85bbdc4b35c998c
 2018-06-18 16:55:22 +00:00
dan
e3bf632cc2 Add support for the WINDOW clause. 
FossilOrigin-Name: 19c983b511f1c823fdfb051713681b4c779f02fa83b41189afca0a9b8b72048d
 2018-06-08 20:58:27 +00:00
dan
03854d2ecc Fixes to allow group_concat() to be used as a window function. 
FossilOrigin-Name: 89bbc9ba8f66853a7530453f146c9df1baacd8558468016cefa7602911f7578a
 2018-06-08 11:45:28 +00:00
dan
dfa552f45b Add support for window functions row_number(), rank(), dense_rank() and 
percent_rank().

FossilOrigin-Name: 91c1cb7a217d0991a08256269f6c55ef185c25362d57b36bfbd2d85dab38e58f
 2018-06-02 21:04:28 +00:00
dan
c3a20c19a8 Add support for "ROWS BETWEEN <expr> PRECEDING AND <expr> FOLLOWING" window 
frames.

FossilOrigin-Name: 3a203660f1e4da3b8d2d605c494f4843f6e00752f28042b49e11d7d6550dd406
 2018-05-23 20:55:37 +00:00
dan
e2f781b9d1 Evaluate multiple window functions in a single pass if they use the same 
window definition. Add xValue callbacks for other built-in aggregate
functions.

FossilOrigin-Name: c9f0f140941660ff368e5bb5752d54feb1964b7a9eac986d4bfb8f24a1c20d86
 2018-05-17 19:24:08 +00:00
dan
86fb6e1738 Start of experimental implementation of SQL window functions. Does not yet 
work.

FossilOrigin-Name: 3781e520854808fe02ad3fe77dd11fc917448c58ff1fd79123289dd91937decd
 2018-05-16 20:58:07 +00:00
drh
0cdbe1aee0 Make the internal dynamic string interface available to extensions using 
the new sqlite3_str object and its associated methods.  This is mostly just
a renaming of internal objects and methods to use external names, through
there are a few small wrapper functions.

FossilOrigin-Name: 87f261f0cb800b06ad786f6df16f2c4dddd0d93dfdcc77b4a4eaa22920b56bf1
 2018-05-09 13:46:26 +00:00
drh
c86d82f27d Fix misplaced testcase() macros from the previous check-in. 
FossilOrigin-Name: 3aed949a18a251c5795f21f0385c205a127502b7e9cf06bc7f4c763951cd7984
 2018-02-10 02:31:30 +00:00
drh
f313952097 Improve the performance of the built-in REPLACE() function in cases where 
it does many substitutions that make the string larger.  OSSFuzz is reporting
intermittant timeouts when running a test where it does a REPLACE() on a 
930KB random blob. Perhaps this enhancement will fix that.

FossilOrigin-Name: fab2c2b07b5d3cd851db3e6f5c8a44155e32b0df22905ea33412b153b825a928
 2018-02-09 23:25:14 +00:00
drh
21d5978422 Remove an unreachable branch from sqlite3SkipAccumulatorLoad(). 
FossilOrigin-Name: 8b9c8eab60b692e45c55a718d76b70e63040416040696907463692cbf83fb0c5
 2018-01-23 19:24:54 +00:00
drh
7ea3469e53 Slightly faster implementation of the length() SQL function. 
FossilOrigin-Name: 9a4199aedb039141a50a68943ef863d7df9637ada318793cce6c12b9d39bcdc5
 2018-01-23 04:22:33 +00:00
drh
f09ac0b336 Slightly faster function dispatch in the virtual machine by avoiding 
unnecessary reinitialization of variables that are already correctly
initialized.

FossilOrigin-Name: edd4e6876cc08ab907bb21f075380de946562d4c56a04923760848b4b11536ac
 2018-01-23 03:44:06 +00:00
drh
35100fb194 Remove the snarky "_supported_" qualifier from the name of the 
sqlite_offset() SQL function.

FossilOrigin-Name: a6eee0fcd89d3958f8720ebdb5f0a8558b4795d747128091dae283eb81c4f74f
 2018-01-04 19:20:37 +00:00
drh
092457b18c Change the function name to sqlite_unsupported_offset(X). Only enable the 
function if compiled with -DSQLITE_ENABLE_OFFSET_SQL_FUNC.  The makefiles add
that definition to shell builds.

FossilOrigin-Name: 7a7f826e324b1a2c332e2f1d0740fd0babffcaca6275a798572f02ad367b99ab
 2017-12-29 15:04:49 +00:00
drh
2fc865c115 Add an experimental location(X) SQL function that attempt to return the 
location of the payload within the database for the record that contains
column X.  location(X) returns NULL if X is not an ordinary table column or
if SQLite cannot figure out the location because it is using a covering index.

FossilOrigin-Name: 51be9558164301c5dd4df23ab8b3e67de0b522f8d36f79f3d84d45d3dc2a83a4
 2017-12-16 20:20:37 +00:00
drh
eba21f9eb2 Improve the performance of the LIKE operator by using strcspn() to aid 
wildcard matching.

FossilOrigin-Name: 37284d4e8f501a37c582aa899419a3dfe0932e2a8e2ef2fdf59addd1d3cdacb4
 2017-10-30 18:49:11 +00:00
drh
f49759bf03 Fix a few over-length source code lines. No functional changes. 
FossilOrigin-Name: 1783c54ce9dcb4b2c4f2a66f6d3315e646b71b54a8899fc32a7bf0f935a21f7f
 2017-08-25 19:51:51 +00:00
drh
1d42ea71c2 Enhance the like optimization so that it works with an ESCAPE clause. 
FossilOrigin-Name: f5d330f495d07a704e115595bbdf5422ddb68fd8191114c5a12c9c873d983f7c
 2017-07-27 20:24:29 +00:00
drh
3cef364966 Add requirements marks for some of the new features in the 3.20 release. 
FossilOrigin-Name: 264238671379306b14d62a6ddaefd2a20acd34ca77276b6ce872253160fe0146
 2017-07-14 19:22:08 +00:00
drh
9d8e401c2d More compact implementation of the typeof() SQL function. 
FossilOrigin-Name: efb4aab0caa4145732a5438cc2a193bc12c455b4007220564d240e75900ea8ad
 2017-07-06 13:51:50 +00:00
drh
b30574bcae Simplified OOM detection in the instr() SQL function. 
FossilOrigin-Name: 6d85eb5736781b43aa674d9544c7523b849b4e634f371702f8764b33e22e1e9f
 2017-03-16 14:28:52 +00:00