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git.ipfire.org Git - thirdparty/sqlite.git/log
drh [Fri, 21 Jul 2023 22:22:13 +0000 (22:22 +0000)]
drh [Fri, 21 Jul 2023 19:17:26 +0000 (19:17 +0000)]
Fix harmless compiler warning introduced by the previous check-in.
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drh [Fri, 21 Jul 2023 18:38:59 +0000 (18:38 +0000)]
Avoid a potentially large strlen() in sqlite3DecOrHexToI64().
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drh [Fri, 21 Jul 2023 18:09:07 +0000 (18:09 +0000)]
Further improvements to large string handling in relation to JSON.
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drh [Fri, 21 Jul 2023 15:07:56 +0000 (15:07 +0000)]
Fix harmless compiler warning about signed/unsigned comparison.
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drh [Fri, 21 Jul 2023 15:01:53 +0000 (15:01 +0000)]
Multiple optimizations that try to preserve or infer the zero-terminated
property of TEXT values. Avoid unnecessary copying of text values destined
to become function parameters. All changes help improve performance of
doing UPDATEs on large JSON values that are indexed multiple ways.
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drh [Wed, 19 Jul 2023 23:02:45 +0000 (23:02 +0000)]
Performance enhancements to the JSON parser and code generator.
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drh [Wed, 19 Jul 2023 20:23:34 +0000 (20:23 +0000)]
Revise the new JSON parser performance test to make the test run 25 times
longer, and thus provide a more repeatable number.
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drh [Wed, 19 Jul 2023 19:23:30 +0000 (19:23 +0000)]
Describe JSON parser performance testing procedure in test/json/README.md
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drh [Wed, 19 Jul 2023 17:24:36 +0000 (17:24 +0000)]
Further improvement to JSON parser performance.
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drh [Wed, 19 Jul 2023 15:06:29 +0000 (15:06 +0000)]
Further performance enhancements to JSON parsing and rendering. Total
performance gain for large JSONs so far on this branch is about 11%.
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drh [Wed, 19 Jul 2023 13:50:31 +0000 (13:50 +0000)]
Performance optimization for parsing large JSONs that contain lots of text.
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drh [Wed, 19 Jul 2023 09:52:10 +0000 (09:52 +0000)]
Two minor improvements to sum(), one of which was inspired by
[forum:/forumpost/
af5be98dbc |forum post
af5be98dbc ].
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drh [Tue, 18 Jul 2023 21:06:19 +0000 (21:06 +0000)]
Do not use the [/info/
609fbb94b8f01d67 |viewscan optimization] on a query
that has only a single loop, as the cost adjustments can cause problems
for outer queries. Proposed fix for the performance regression reported by
[forum:/forumpost/
64d36440e473516c |forum post
64d36440e473516c ].
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drh [Tue, 18 Jul 2023 20:41:09 +0000 (20:41 +0000)]
Improved ".wheretrace" for the VIEWSCAN optimization.
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dan [Tue, 18 Jul 2023 16:29:34 +0000 (16:29 +0000)]
dan [Tue, 18 Jul 2023 13:55:19 +0000 (13:55 +0000)]
Fix a buffer overrun in fts5 that could occur in 'secure-delete' mode when dealing with corrupt database records.
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stephan [Fri, 14 Jul 2023 21:06:00 +0000 (21:06 +0000)]
stephan [Fri, 14 Jul 2023 12:21:05 +0000 (12:21 +0000)]
stephan [Thu, 13 Jul 2023 18:35:48 +0000 (18:35 +0000)]
Reintroduce WASMFS+OPFS support, albeit as a separate (less portable) WASM build.
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stephan [Thu, 13 Jul 2023 18:13:52 +0000 (18:13 +0000)]
Minor cleanups related to reintroducing wasmfs support.
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stephan [Thu, 13 Jul 2023 17:27:05 +0000 (17:27 +0000)]
More work on the wasmfs build and its test apps.
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stephan [Thu, 13 Jul 2023 16:33:45 +0000 (16:33 +0000)]
Get speedtest1 wasmfs variant running again.
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drh [Thu, 13 Jul 2023 14:49:39 +0000 (14:49 +0000)]
Fix an off-by-one error in tests for cells overflowing the end pages. The
error is completely harmless for the default page cache, but might cause
problems for application-defined page caches that pack pages tightly
together.
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stephan [Thu, 13 Jul 2023 14:08:30 +0000 (14:08 +0000)]
Significant surgery on the wasm build on the way to incorporating wasmfs as a first-class build option.
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stephan [Thu, 13 Jul 2023 10:41:41 +0000 (10:41 +0000)]
More work on the wasmfs build. Resolve the inconsistent argument type passed to sqlite3InitModule() in such builds.
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stephan [Thu, 13 Jul 2023 04:54:18 +0000 (04:54 +0000)]
stephan [Thu, 13 Jul 2023 04:26:13 +0000 (04:26 +0000)]
Get wasmfs build and its bare-bones test app working again, albeit currently in ES6 mode only.
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stephan [Thu, 13 Jul 2023 03:46:43 +0000 (03:46 +0000)]
Replace 'self' with 'globalThis' in some JS test code.
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stephan [Thu, 13 Jul 2023 01:51:16 +0000 (01:51 +0000)]
JS: change the default OPFS VFS journal mode from PERSIST to DELETE, as DELETE is faster in current browsers.
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stephan [Thu, 13 Jul 2023 01:48:53 +0000 (01:48 +0000)]
Remove obsolete ext/wasm/api/sqlite3-wasi.h.
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stephan [Wed, 12 Jul 2023 09:30:13 +0000 (09:30 +0000)]
stephan [Wed, 12 Jul 2023 09:16:18 +0000 (09:16 +0000)]
Correct handling of the speedtest1 --without-rowid flag in the HTML front-end to speedtest1.wasm. Reduce default speedtest1-with-OPFS workload size in ext/wasm/index.html to speed up manual testing.
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drh [Tue, 11 Jul 2023 19:54:17 +0000 (19:54 +0000)]
Reduce divergence between branches: trunk and wal-shm-exceptions.
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drh [Sat, 8 Jul 2023 17:42:24 +0000 (17:42 +0000)]
Always use the "LL" suffix on 64-bit integer literals.
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drh [Sat, 8 Jul 2023 14:27:55 +0000 (14:27 +0000)]
drh [Fri, 7 Jul 2023 18:49:08 +0000 (18:49 +0000)]
Omit the use of memmove() in sqlite3FpDecode() in an attempt to avoid
spurious warnings from valgrind. Also makes the code slightly smaller and
faster.
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drh [Fri, 7 Jul 2023 12:18:26 +0000 (12:18 +0000)]
For the "Valgrind" test scenario, set LONGDOUBLE_TYPE=double as valgrind
does not correctly emulated extended precision on x64.
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drh [Fri, 7 Jul 2023 12:08:22 +0000 (12:08 +0000)]
Add option 2 to SQLITE_TESTCTRL_USELONGDOUBLE to move the setting to its
defaults. Enhance the CLI and testfixture to make use of this value.
Base the default on sizeof(LONGDOUBLE_TYPE) rather than on sizeof(long double).
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drh [Thu, 6 Jul 2023 20:34:06 +0000 (20:34 +0000)]
Improved handling of integer inputs to the new sum() implementation.
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drh [Thu, 6 Jul 2023 18:29:15 +0000 (18:29 +0000)]
A more precise implementation of sqlite3RealToI64().
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drh [Thu, 6 Jul 2023 17:14:47 +0000 (17:14 +0000)]
Fix octet_length() test cases so that they work when the database encoding
is utf16.
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drh [Thu, 6 Jul 2023 15:44:38 +0000 (15:44 +0000)]
Use the Kahan-Babushka-Neumaier algorithm to improve the accuracy of sum().
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drh [Thu, 6 Jul 2023 14:45:53 +0000 (14:45 +0000)]
Fix minor inaccuracies in the new sum() algorithm.
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drh [Thu, 6 Jul 2023 13:19:10 +0000 (13:19 +0000)]
Experimental attempt to boost the accuracy of sum() using the
Kahan-Babuska-Neumaier algorithm.
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drh [Thu, 6 Jul 2023 00:55:06 +0000 (00:55 +0000)]
Use "volatile" isntead of "#pragma" to get floating point calculations
working correctly when compiling with GCC for x86 machines.
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drh [Wed, 5 Jul 2023 22:05:18 +0000 (22:05 +0000)]
This is alternative work-around for the x86 float-point problem that uses
"volatile" rather than compile-specific #pragmas.
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drh [Wed, 5 Jul 2023 19:56:14 +0000 (19:56 +0000)]
Improved comments on the work-around to the GCC x86 floating point wonkiness.
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drh [Wed, 5 Jul 2023 18:59:52 +0000 (18:59 +0000)]
Work around for an apparent GCC bug. See
[forum:/info/
ee7278611394034c |forum post
ee7278611394034c ] for details.
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drh [Wed, 5 Jul 2023 15:34:30 +0000 (15:34 +0000)]
Make the order of operations explicit for the error term of Dekker
double-precision multiply.
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drh [Wed, 5 Jul 2023 14:42:50 +0000 (14:42 +0000)]
Simplification of the dekkerMul2() subroutine.
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drh [Wed, 5 Jul 2023 12:00:32 +0000 (12:00 +0000)]
Add the ieee754_inc(r,N) function to the ieee754.c extension.
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drh [Mon, 3 Jul 2023 18:32:29 +0000 (18:32 +0000)]
Enhance the sqlite3AtoF() function so that it can operate with or without
long double and provides accurate results in both cases.
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drh [Mon, 3 Jul 2023 18:18:35 +0000 (18:18 +0000)]
Enhance sqlite3AtoF() so that it honors the USELONGDOUBLE test-control.
Enable the test/atof1.test module on non-intel platforms.
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drh [Mon, 3 Jul 2023 15:30:50 +0000 (15:30 +0000)]
Store the fp-speed-1.c test program used to measure relative performance of
SQLite versus the standard library, in the test/ directory. A header comment
explains how to use it.
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drh [Mon, 3 Jul 2023 15:11:28 +0000 (15:11 +0000)]
Add the --nolongdouble option to speedtest1.c.
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drh [Mon, 3 Jul 2023 15:03:59 +0000 (15:03 +0000)]
Improved precision of binary-to-decimal conversion of floating-point values
on all systems but especially non-x86 systems that lake extended precision
hardward floating point.
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drh [Mon, 3 Jul 2023 14:56:49 +0000 (14:56 +0000)]
Whether or not to use the long-double floating point conversion technique
is now a test-control setting.
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drh [Mon, 3 Jul 2023 12:58:18 +0000 (12:58 +0000)]
New test cases for floating-point conversions.
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drh [Mon, 3 Jul 2023 11:44:15 +0000 (11:44 +0000)]
Use Dekker double-precision floating point to do the value normalization
step in sqlite3FpDecode() for systems on which "long double" is 8 bytes or
less.
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drh [Mon, 3 Jul 2023 11:39:38 +0000 (11:39 +0000)]
Final clean-up of the idea of using Dekker double-precision floating
computations to improve accuracy.
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drh [Mon, 3 Jul 2023 10:35:29 +0000 (10:35 +0000)]
Squeeze as many bits as we can out of normalization.
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drh [Mon, 3 Jul 2023 10:18:02 +0000 (10:18 +0000)]
Faster Dekker multiplication that removes the restriction on input magnitude.
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drh [Mon, 3 Jul 2023 10:00:38 +0000 (10:00 +0000)]
Fix one constant in the normalization logic. Improved error output
from atof1.test.
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drh [Mon, 3 Jul 2023 09:07:23 +0000 (09:07 +0000)]
Replace the dodgy error estimating logic in the previous check-in with
full-up Dekker double-double multiplication, and this idea works much better.
There are still a few inaccuracies, but it is much closer.
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drh [Mon, 3 Jul 2023 00:40:37 +0000 (00:40 +0000)]
An idea for improving accuracy of fp-to-decimal conversion for systems that
do not have "long double". Does not quite work. Retained only for
documentation purposes.
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drh [Sat, 1 Jul 2023 20:21:27 +0000 (20:21 +0000)]
This check-in adds the use of "long double" to sqlite3FpDecode() which when
run on x86 using a compiler that translates "long double" into binary80,
causes all legacy tests to pass. But on a system where "long double" is just
an alias for "double", some of the tests are still failing.
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drh [Sat, 1 Jul 2023 18:33:26 +0000 (18:33 +0000)]
Reinstate the fpdecode() SQL function for testing, but only when compiled
with SQLITE_DEBUG.
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drh [Sat, 1 Jul 2023 17:56:00 +0000 (17:56 +0000)]
drh [Sat, 1 Jul 2023 15:23:24 +0000 (15:23 +0000)]
Improved response to Infinity and NaN. Remove the termporary fpdecode()
function.
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drh [Sat, 1 Jul 2023 14:03:50 +0000 (14:03 +0000)]
Progress towards fixing corner-case floating-point formatting issues.
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drh [Fri, 30 Jun 2023 23:42:46 +0000 (23:42 +0000)]
Fix an issue with the "+" attribute in printf().
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drh [Fri, 30 Jun 2023 23:18:44 +0000 (23:18 +0000)]
Begin cutting over sqlite3FpDecode() into printf(). The code in this
check-in gets a lot right, but there are still some formatting
discrepencies.
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drh [Fri, 30 Jun 2023 19:41:57 +0000 (19:41 +0000)]
Add decimal rounding to the sqlite3FpDecode() routine.
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drh [Fri, 30 Jun 2023 18:35:43 +0000 (18:35 +0000)]
Experiments with a new algorithm for converting ieee-754 binary64 numbers
into decimal.
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dan [Fri, 30 Jun 2023 18:31:37 +0000 (18:31 +0000)]
Add support for sqlite3_stmt_scanstatus_v2() profiling of GROUP BY clauses that use a temp b-tree, and for sub-queries implemented as co-routines.
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dan [Fri, 30 Jun 2023 18:23:53 +0000 (18:23 +0000)]
Improve support for sqlite3_stmt_scanstatus_v2() profiling of sub-queries implemented as co-routines.
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dan [Fri, 30 Jun 2023 17:14:36 +0000 (17:14 +0000)]
Add support for sqlite3_stmt_scanstatus_v2() profiling of GROUP BY clauses that use a temp b-tree.
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dan [Fri, 30 Jun 2023 16:16:51 +0000 (16:16 +0000)]
Add extra debugging code for sqlite3_stmt_scanstatus_v2() to test1.c.
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drh [Fri, 30 Jun 2023 14:01:09 +0000 (14:01 +0000)]
Completely unwind the enhanced precision sum() from [
a915f15a916af698 ] so
as not to offend UBSAN and OSS-Fuzz.
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drh [Fri, 30 Jun 2023 12:59:06 +0000 (12:59 +0000)]
Omit the doubleToReal() function in vdbemem.c. Use the
equivalent sqlite3RealToI64() function in its place.
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drh [Fri, 30 Jun 2023 11:51:36 +0000 (11:51 +0000)]
Make the sum() function less precise and slower in order to avoid
harmless signed integer overflow UBSAN warnings from OSS-Fuzz.
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drh [Thu, 29 Jun 2023 23:03:30 +0000 (23:03 +0000)]
Cleanup and commenting of the new DECIMAL extension code. No functional
changes.
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drh [Thu, 29 Jun 2023 20:28:03 +0000 (20:28 +0000)]
Enhancements to the DECIMAL extension:
(1) If the argument to decimal(X) is a floating point value (or an 8-byte blob),
the floating point value is expanded into its exact decimal representation.
(2) Function decimal_sci(X) works the same except it returns the result in
scientific notation.
(3) New function decimal_pow2(N) returns the full decimal expansion of the N-th
integer power of 2.
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drh [Thu, 29 Jun 2023 17:48:32 +0000 (17:48 +0000)]
Fix harmless compiler warnings about unused function arguments.
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drh [Thu, 29 Jun 2023 17:36:18 +0000 (17:36 +0000)]
Improve the range of floating-point numbers that can be handled as integers
for numeric-to-text conversion.
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drh [Thu, 29 Jun 2023 17:26:21 +0000 (17:26 +0000)]
Further refine the dtostr() testing function in the CLI so that it takes an
optional second parameter which is the number of significant digits to display.
FossilOrigin-Name:
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drh [Thu, 29 Jun 2023 16:48:25 +0000 (16:48 +0000)]
Change the (undocumented) dtostr() SQL function in the CLI so that it only
shows the first 26 significant digits - 10 more digits than are available
in a 64-bit double.
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drh [Thu, 29 Jun 2023 14:49:23 +0000 (14:49 +0000)]
Add the decimal_sci(X) function to the Decimal extension for showing a decimal
value in scientific notation: +D.DDDDDe+DD
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drh [Thu, 29 Jun 2023 12:14:10 +0000 (12:14 +0000)]
CLI enhancements to facilitate SQLite core testing:
(1) Add built-in functions strtod() and dtostr() that convert text to
floating point and back using C-library routines.
(2) Do not disable all of ".testctrl" without --unsafe-testing, but only
those subcommands of .testctrl that are actually dangerous.
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drh [Wed, 28 Jun 2023 12:02:48 +0000 (12:02 +0000)]
Enhance the SUM() aggregate (and related AVG() and TOTAL()) so that the running
sum is accurate to about 100 bits.
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drh [Wed, 28 Jun 2023 11:46:28 +0000 (11:46 +0000)]
Improved accuracy of floating-point conversion constants as suggested by
[forum:/info/
598d32f6135c41c1 |forum post
598d32f6135c41c1 ].
FossilOrigin-Name:
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drh [Mon, 26 Jun 2023 19:57:23 +0000 (19:57 +0000)]
Simple test cases for the enhanced SUM() function.
FossilOrigin-Name:
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drh [Mon, 26 Jun 2023 19:35:20 +0000 (19:35 +0000)]
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:
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larrybr [Mon, 26 Jun 2023 17:08:08 +0000 (17:08 +0000)]
Fix CLI .sha3sum error message for keyword identifiers, reported in [forum:/forumpost/
7cbe081746dd |forum post
7cbe081746dd ].
FossilOrigin-Name:
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stephan [Mon, 26 Jun 2023 07:05:05 +0000 (07:05 +0000)]
Replace some JS 'self' references with 'globalThis', as reported via the npm subproject.
FossilOrigin-Name:
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drh [Sun, 25 Jun 2023 20:23:51 +0000 (20:23 +0000)]
drh [Fri, 23 Jun 2023 11:10:13 +0000 (11:10 +0000)]
Add support for the octet_length() SQL function, with low-level optimizations
that avoid loading large string content from disk when the argument to
octet_length() is a table column.
FossilOrigin-Name:
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drh [Thu, 22 Jun 2023 21:19:37 +0000 (21:19 +0000)]
Optimize the argument to the octet_length() function so that it does not
attempt to read content from disk.
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drh [Thu, 22 Jun 2023 15:26:52 +0000 (15:26 +0000)]