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Commit Graph

2376 Commits

Author SHA1 Message Date
drh
07a3b11a50 Slightly more compact implementation of the byte-code generator for
the COMMIT and ROLLBACK commands.

FossilOrigin-Name: 4da663d9863004d8cef58259a043fdcf4f466f80d3714cf58321a52485be8766
2017-07-06 01:28:02 +00:00
drh
269ba80469 Add the count-of-view optimization when compiled using
SQLITE_COUNTOFVIEW_OPTIMIZATION.

FossilOrigin-Name: d1ba200234f40b84327c7fc28c2584ed069da80e97578df71114d1a9ba9c559c
2017-07-04 19:34:36 +00:00
drh
37f906087b Merge the in the latest enhancements from trunk.
FossilOrigin-Name: 8f63c5863231eba7f853f9587b58a81102c31708402fa9962a6e91aa622fad13
2017-06-28 18:07:29 +00:00
drh
169dd928c5 Add the SQLITE_DBCONFIG_ENABLE_QPSG option to activate the query planner
stability guarantee.  This involves refactoring the sqlite3.flags bitvector
to carve out a free bit to use.

FossilOrigin-Name: 7076e8283ebae1b45a5d85d9538b49b6da399d38c3c6935de100f948f814f6a9
2017-06-26 13:57:49 +00:00
dan
5aa550cf3b Consider the values bound to SQL variables when determining whether or not a
partial index may be used.

FossilOrigin-Name: 7b59c353b805c64689b4ae9df347705acbb5f116346ad77af8ce087da7893747
2017-06-24 18:10:29 +00:00
drh
7f2d1cd2b0 Make sure the config.h header is included by ctime.c, if that header exists.
FossilOrigin-Name: c2ea62937ec8fabec72d3c7cd38d8e2cabbb5ce48638f8ce7ebefd6cd2716fd3
2017-06-24 16:35:00 +00:00
dan
814aad618c Ensure that the value of the THREADSAFE symbol is always included when
reporting compile time options, even if it was not explicitly configured.

FossilOrigin-Name: 95141c642697dc037e57f9e4992ff3460155995d3caef6259235601ee722cb93
2017-06-17 17:29:24 +00:00
dan
da1f49b83f Rework the code in ctime.c a bit to report on more compile time options. And
to only output configuration options passed in to SQLite, not the default
values of #define symbols set automatically. Also generate the large array in
ctime.c using new script tool/mkctime.tcl, instead of entering it manually.

FossilOrigin-Name: bc1951d699e6eeacbe15776a37cd0f5cf3f09eb85d3ae01cff43293cb286fcd7
2017-06-16 19:51:47 +00:00
drh
cc97ca4c08 In SQLITE_DEBUG mode, attempt to log the page number of the database that
contained the problem when SQLITE_CORRUPT errors are seen.

FossilOrigin-Name: e39795d7d798d5249c7bd2a0f6ff891b455f4300a3d638c39a4668323b367666
2017-06-07 22:32:59 +00:00
drh
a8b9793c86 Avoid unnecessary memory zeroing during expression list allocation.
FossilOrigin-Name: de28e6514a42438411e2c9d833ba660108128ca86d0b90f32925fb73195f4862
2017-05-31 02:58:30 +00:00
drh
d03257c141 Size and performance optimizations to sqlite3ResolveExprNames().
FossilOrigin-Name: af8c0fed93c830c50641d95691bb507c31947a15529aba2a88bfaa66b3a3287a
2017-05-31 00:49:40 +00:00
drh
979dd1be57 Optimizations to the Walker object and its methods to make the code a little
smaller and to help it run a little faster.

FossilOrigin-Name: 6854a34ed708259f2280f7ee56cec09f7fc99810dc739dc2814ddeae286aa2c4
2017-05-29 14:26:07 +00:00
drh
5034dc673d Merge the latest enhancements from trunk.
FossilOrigin-Name: a7dcf6a79f7e1c5884baee2909a4bf3174ae06d561dae87b390856e573f81b49
2017-05-02 19:45:14 +00:00
dan
ab31a8450b Automatically transfer terms from the HAVING clause to the WHERE clause of an
aggregate query in cases where the result of evaluating the term depends only
one one or more of the GROUP BY expressions (and on no other inputs).

FossilOrigin-Name: 5375a3ce56f1d993b13b469fe33ec7679948f53940f62a15ddbaeb8aaa26a22c
2017-04-29 20:53:09 +00:00
dan
280db65e2c Add support for analyzing trigger programs to the sqlite3_expert code.
FossilOrigin-Name: 159e8022a9d6701532b8b60e0c41154bc434c1bbdb107c8c97a78fb1140fa745
2017-04-17 17:03:08 +00:00
dan
e01b9281fc Add header comment for sqlite3_vtab_collation().
FossilOrigin-Name: d238694ca445ccb4eeb3e3269a5f872f998f795945d0f9dd95c11d0e42d4d538
2017-04-15 14:30:01 +00:00
dan
0824ccf29b Modify the code in ext/expert/ to use the vtab interface instead of
sqlite3_whereinfo_hook(). Remove sqlite3_whereinfo_hook().

FossilOrigin-Name: 3bb6585004090dbf92dd5e9abdf0fd2c921e64b5b3121c4fb7446db764ab59e5
2017-04-14 19:41:37 +00:00
dan
0e0f5edbb5 Update this branch with latest trunk changes.
FossilOrigin-Name: 0f66a093935100efd731e14aa63b57360ddd517c1ac97edd1ea9a9de95e1f3cc
2017-04-11 19:00:30 +00:00
dan
2b78dd2359 Merge latest trunk with this branch.
FossilOrigin-Name: e051e8f21b909c5e89a7203eef6501fecd64f82a634c4e10398b5ef7d716eb37
2017-04-08 19:00:37 +00:00
drh
aca19e19a8 Proof of concept for the ability to use the expression columns in an index
on expressions in place of equivalent expressions in the result set or in
the WHERE clause.  This check-in compiles but is mostly untested.

FossilOrigin-Name: a52ef2ad7c0e14b78b801f16a1f6ea8d8fa9ae5d7d810e18dd24c600b662a312
2017-04-07 19:41:31 +00:00
drh
dbd6a7dc06 Split off sqlite3DbFreeNN() from sqlite3DbFree() and use it in cases where
we know that the argument to be freed is never NULL.

FossilOrigin-Name: ad90e8bb5e47945607c8fb47b6ade8cfc52a9b684805cc40132629be0ecc14cc
2017-04-05 12:39:49 +00:00
drh
43606175e2 Combine the ExprList_item objects and the ExprList wrapper into a single
memory allocation, for improved performance and reduced footprint.

FossilOrigin-Name: 2b6560ad88b92820c383bcdc1e30c06f8b081ef7c6d9b1af71d2bb76c83e35cd
2017-04-05 11:32:13 +00:00
dan
e86573fa51 Add the sqlite3_whereinfo_hook() API - an experimental API replacing the
DBCONFIG_WHEREINFO hack on this branch.

FossilOrigin-Name: a54aef35da11f7508a8888a159372036a362fc52afa1df752dc835db334c4330
2017-04-04 04:23:06 +00:00
dan
fbf3bdcdbc Merge latest trunk into this branch.
FossilOrigin-Name: cb721d0b36268a7b0ef493fa4d7f6bcbaa9ead8b1990e3c3fae015fa1d545226
2017-03-31 11:20:20 +00:00
drh
3e7d012eb1 Make the default value for SQLITE_DEFAULT_SYNCHRONOUS a simple integer
literal, so that it does not show up goofy in the output of
"PRAGMA compile_options;".

FossilOrigin-Name: 833ab3212addc340ca8004e8d6a06cc5e51bf256f43dc73d87fbe67518a4891b
2017-03-25 18:03:26 +00:00
drh
bce0414844 Do a single OP_Expire at the very end of "PRAGMA optimize", and omit the
OP_Expire on ANALYZE commands invoked by the pragma.

FossilOrigin-Name: 188300a337c87b7ee0dd1f4b9a4f1bd80e70cca4
2017-02-23 00:58:36 +00:00
drh
114ce7a4b1 Merge integrity_check and other improvements from trunk.
FossilOrigin-Name: fe073905081b421405ca425ca03c5b8b0ff5f2c8
2017-02-22 19:49:54 +00:00
drh
8b174f2916 Fix integrity_check so that it verifies NOT NULL constraints even for tables
that have no indexes.  Enhance quick_check so that it verifies NOT NULL and
CHECK constraints.

FossilOrigin-Name: 5264844b069cdc20f456acee9f5b2b97c986120d
2017-02-22 15:11:36 +00:00
drh
4a54bb5794 Add the OP_SqlExec opcode and use it to implement "PRAGMA analyze_as_needed",
invoking ANALYZE subcommands as necessary.  This simplifies the implementation.

FossilOrigin-Name: d386015f5e7ecdd951d70db56b7bbd858be7ad90
2017-02-18 15:58:52 +00:00
drh
182e84c116 In the analyze_as_needed pragma, avoid running unnecessary OP_LoadAnalysis
and OP_Expire opcodes.  Make the analyze_as_needed pragma responsive to the
schema name.

FossilOrigin-Name: 882599a4a7ea92c9e7752e0745475508e58a11c3
2017-02-18 02:19:02 +00:00
drh
5e98e838da The analyze_as_needed pragma now responds to table size growth and will
automatically rerun the analysis after each 10x size increase.

FossilOrigin-Name: bfbdd07409688fac4ccddbab3639745f6152e23d
2017-02-17 19:24:06 +00:00
drh
72052a73a3 Add the "PRAGMA analyze_as_needed" command.
FossilOrigin-Name: e93db2373127d31d33ec46ef918fa9386bb664a6
2017-02-17 16:26:34 +00:00
drh
a3928dd7be Set the TF_StatsUsed flag on tables when the query planner outcome is
affected by the sqlite_stat1 data.  Also, change the column names of the
"PRAGMA stats" command so that they are not keywords.

FossilOrigin-Name: fb2b8ae8310e4ea4b42354bbf36c3084a9d5c6d7
2017-02-17 15:26:36 +00:00
drh
33bec3f5e8 Enhance the Index and Table objects so that they remember if their stats come
from the sqlite_stat1 table.  Make the "PRAGMA stats" an SQLITE_DEBUG only
pragma.  Add the flags column to "PRAGMA stats".  These are all preliminary
steps toward a "PRAGMA analyze_ifneeded;" feature.

FossilOrigin-Name: 85026c8ee143bbd46565660fff8346ef81421546
2017-02-17 13:38:15 +00:00
drh
c5f4816fc5 Fix a comment on a field of the ExprList object. No changes to code.
FossilOrigin-Name: bb8e264227175fc93f1c86a0083f8ad6c4ce2dc7
2017-02-16 16:26:53 +00:00
drh
6f271a421d Increase Table.tabFlags from 8 to 32 bits.
FossilOrigin-Name: 7e14044c65f64322769bcad4640a5896be0a1687
2017-02-16 15:57:30 +00:00
drh
44266ec651 Always use the IsVirtual() macro to determine if a Table object is a virtual
table.  Slightly smaller and faster code.

FossilOrigin-Name: 6affb1c89d87288cad87dde5a533832cdf06b8aa
2017-02-16 14:48:08 +00:00
drh
dc5ece86ae Remove the CLANG_VERSION macro, since we have learned that version numbers in
clang are "marketing" and are inconsistent and unreliable.  Builds using clang
will still use the GCC_VERSION macro since clang works hard to be gcc
compatible.

FossilOrigin-Name: 810d29320b853b3a01aa50d8f2a0bceacf79e0aa
2017-02-15 15:09:09 +00:00
drh
f9463dfbcf Fix indexes on expressions so that they can be actually used with
a COLLATE clause.

FossilOrigin-Name: e464b919f76520b45bb58983c6702db59d820ee4
2017-02-11 14:59:58 +00:00
drh
a39284bfa8 Cleanup the usage of the SQLITE_DISABLE_INTRINSIC compile-time option.
Remove the SQLITE_RUNTIME_BYTEORDER compile-time option.  Use
-DSQLITE_BYTEORDER=0 instead.  Fix a bug in R-Tree that occurs when compiling
on a known little-endian machine without the use of intrinsic byteswapping
functions.

FossilOrigin-Name: 798fb9d70d2e5f95e64237b04d6692360133381a
2017-02-09 17:12:22 +00:00
drh
1650fcb1b5 Fix the build by making the OPFLAG_ISNOOP macro available unconditionally.
FossilOrigin-Name: 510933cb24c5bf883265af3a6075e60a4b5ffa37
2017-02-01 15:19:29 +00:00
dan
e7eeeb99f7 Fix building with SQLITE_OMIT_FOREIGN_KEY defined.
FossilOrigin-Name: e93d2c49a44af994ff10cc9cc7eafacd5a4f73ab
2017-01-30 11:38:19 +00:00
drh
d26cc54183 In the amalgamation, allocate the parser engine object from stack rather than
from heap, for improved performance.  This only happens in the amalgamation,
since otherwise the sqlite3RunParser() routine does not know the object size.

FossilOrigin-Name: 4fe879d4b5da6ae0688a7a99004683a234966597
2017-01-28 20:46:37 +00:00
dan
f64ece143c Avoid redundant table b-tree cursor seeks in UPDATE statements that use the
two-pass strategy.

FossilOrigin-Name: dc555b1039c6930f6d15355c698ff917a85e8056
2017-01-28 19:45:34 +00:00
drh
d447dced96 Trim NULL values off the end of records when the SQLITE_ENABLE_TRIM_NULLS
compile-time option is used.  Increase the size of the P5 operand to 16 bits.
Fix a problem with short records in the sessions extension.

FossilOrigin-Name: 4801bd59a01dcc11a3eb9e776e7599b36f162d2a
2017-01-25 20:55:11 +00:00
drh
585ce1923c Experimental enhancement to automatically trim NULL values from the end of
records, for a reduced disk footprint.  This change also involves increasing
the P5 operand from 8 to 16 bits.

FossilOrigin-Name: 118ded403b95050b74ae2b03919c43d614094a32
2017-01-25 14:58:27 +00:00
drh
8674e49214 If compiled with SQLITE_INLINE_MEMCPY, all memcpy() calls are replaced with
in-line code.  With that change, cachegrind shows which memcpy() calls
are taking the most time.  This is a performance-measurement hack only and
is not for production use.

FossilOrigin-Name: 9ed38521617136223a667988aed40e25797faf84
2017-01-19 21:20:11 +00:00
drh
c711f53f30 Disable intrinsic functions for Windows using Clang, due to reports of
linkage errors.  This causes a 0.6% performance reduction.  We will want to
revisit this change in the future.

FossilOrigin-Name: 7fd560c6d2ff470b755ad118287a0a8825b3009e
2017-01-17 00:10:58 +00:00
dan
f91c1318f4 Changes to allow some multi-row UPDATE statements to avoid the two-pass
approach.

FossilOrigin-Name: 46db23ccd116ce5b9d949f9293be8a2818411b46
2017-01-10 20:04:38 +00:00
drh
ad879ffdb5 Clean up the implementation of constant function factorization.
FossilOrigin-Name: 2ab997e47998d261bd6190bbce5c09f3fbd4cfd3
2017-01-04 04:10:02 +00:00