drh
c711f53f30
Disable intrinsic functions for Windows using Clang, due to reports of
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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
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approach.
FossilOrigin-Name: 46db23ccd116ce5b9d949f9293be8a2818411b46
2017-01-10 20:04:38 +00:00
drh
ad879ffdb5
Clean up the implementation of constant function factorization.
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FossilOrigin-Name: 2ab997e47998d261bd6190bbce5c09f3fbd4cfd3
2017-01-04 04:10:02 +00:00
drh
1e9b53f9bc
Attempt to factor out constant functions from the interior of table scans,
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since functions can often be expensive to compute.
FossilOrigin-Name: 62e9270a8057d758621da33adb27fad14225f95d
2017-01-04 01:07:24 +00:00
drh
7433ae5df6
Back out the use of __sync_fetch_and_sub() as it does not appear to work.
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FossilOrigin-Name: 4c2efd4239bf07eb4b92d4af54edd68ee6312670
2017-01-03 21:50:49 +00:00
drh
5c6b944d16
Fix a typo in a comment.
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FossilOrigin-Name: ae087123db8e7d47b25a8d0a98cfd62e85e42fc6
2017-01-03 21:03:37 +00:00
drh
b94f2eccc1
Use the CLANG_VERSION macro to control clang-specific features.
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FossilOrigin-Name: f8ebeec211483503e135104ef977b3c384a1d789
2017-01-03 20:01:24 +00:00
drh
eea46aeafc
Use the GCC built-in __sync_fetch_and_sub() to make the sqlite3StatusDown()
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routine atomic, and thereby avoid some mutexing.
FossilOrigin-Name: f69ce75b3d94331fdbfa2f3a27d61db24c285d2b
2017-01-03 18:05:04 +00:00
drh
01e64a1704
Merge all the latest changes from trunk.
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FossilOrigin-Name: c27cd8a8127b81d3176f6a5b9915c9b3c69574fb
2017-01-03 14:30:28 +00:00
drh
83a4f47d57
Change SQLITE_DEFAULT_PCACHE_INITSZ from 100 to 20, which is experimentally
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determined to be slightly faster.
FossilOrigin-Name: 12d9493cb29307aec65ceccc68e802e4d0f18112
2017-01-02 18:40:03 +00:00
drh
38eef32172
Avoid unnecessary calls to sqlite3BtreeEnterAll() and sqlite3BtreeLeaveAll()
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when no btree is using shared-cache.
FossilOrigin-Name: cfb3158204628eb2fd170090a7f212df0e4ce6c9
2017-01-02 18:19:29 +00:00
drh
a1a523a5bb
Add the built-in affinity() SQL function.
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FossilOrigin-Name: 57e40e1cb1bcd3dd8473d2fdeecc9c7ff3d6192b
2016-12-26 00:18:36 +00:00
drh
9bf755cc44
Use the VList object to replace Parse.azVar for tracking the mapping between
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SQL parameter names and parameter numbers. There is a performance
improvement, though there are still a few hiccups in the current code.
FossilOrigin-Name: 68ecafa1425a41358c88f41efea3262f1b4490f2
2016-12-23 03:59:31 +00:00
drh
2fcc1590c4
Code to automatically create eponymous virtual tables for read-only pragmas.
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Compiles, but does not yet work.
FossilOrigin-Name: 988a61e8b03f302c69d11898d1ea95f002cba1a5
2016-12-15 20:59:03 +00:00
drh
79df77821a
Refactor the Table.nRef field as Table.nTabRef for easier grepping.
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FossilOrigin-Name: 9cae4c2e300e20304ced0dc8c1415c4922185928
2016-12-14 14:07:35 +00:00
drh
d07df8e76a
Increase the size of the reference count on Table objects to 32 bits.
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FossilOrigin-Name: d08b72c38ff6fae6ddf7dc84a54f6d7189876289
2016-12-14 13:54:25 +00:00
drh
d12602a9c5
Rename the SQLITE_OMIT_BUILTIN_TEST compile-time option to SQLITE_UNTESTABLE.
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FossilOrigin-Name: f360818737e73ee4f944685a547abc8f14f47819
2016-12-07 15:49:02 +00:00
dan
44c5604ced
Prevent the flattening or where-term push-down optimizations from obscuring
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misuses of SQL row values that can lead to crashes or assert() failures.
FossilOrigin-Name: 433d16ff3adfede3be53d5b0e0512f37e225591b
2016-12-07 15:38:37 +00:00
drh
9314bd5fe2
Always honor the sqlite3.dbOptFlags bitmask, regardless of compile-time
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options. Continuing fix for ticket [da78413751863].
FossilOrigin-Name: afab166313e0b8ad530df99887437a362398ed02
2016-12-07 13:49:11 +00:00
drh
abfd35ea03
Performance improvement and size reduction in the Expr node allocator
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function sqlite3PExpr().
FossilOrigin-Name: 2a81763e68cdf9b8c46389b1e1a87bc2084b53e7
2016-12-06 22:47:23 +00:00
drh
588429a87d
Fix a potential use-after-free error during parsing of malformed
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CREATE TABLE statement.
FossilOrigin-Name: c5dbc599b910c02a961675b12b273b8df6d29450
2016-11-14 20:08:00 +00:00
dan
257c13fa00
Avoid storing redundant fields in sorter records when the sort-key and data have
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fields in common (as in "SELECT a FROM t1 ORDER BY 1").
FossilOrigin-Name: 0af62fdbd8e2aab14718ff8bcb5934f05463c176
2016-11-10 20:14:06 +00:00
dan
298af02308
Add the SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE sqlite3_dbconfig() option - for
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disabling SQLite's default checkpoint-on-close behaviour.
FossilOrigin-Name: 093d2fc2288b75c15ccf877bfa0e622d3918a562
2016-10-31 16:16:49 +00:00
drh
de25a88c50
Avoid unnecessary strlen() calls in sqlite3ExprAssignVarNumber() by passing in
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the token length from the parser.
FossilOrigin-Name: d15ae2e530cffea60263f203ac5f89b6790f4bd5
2016-10-03 15:28:24 +00:00
drh
445f3d564c
Rearrange fields in the Parse object to reduce the amount of initialization
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required.
FossilOrigin-Name: 361940b44dd17bf2b39fc0e0716c0de6b2b7f4f7
2016-10-01 21:43:37 +00:00
drh
cd9af608e1
Avoid initializing the column-cache section of the Parse object, since entries
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in the cache will be initialized as they are used, and avoiding the initial
memset() saves many CPU cycles.
FossilOrigin-Name: 63cf7eafae5c3c1379edf416c5157010c7c120b5
2016-09-30 22:24:29 +00:00
drh
e05950d878
Another simplification to the Parse object.
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FossilOrigin-Name: c1419727f5e4cb3ef63b5853b6ef3b1e53af0651
2016-09-30 19:14:32 +00:00
drh
1d96cc60d0
Remove unnecessary fields from the Parse object.
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FossilOrigin-Name: 814e41da3563eecf5514811bc8ab2df4f5cc0d4b
2016-09-30 18:35:36 +00:00
drh
2831c4d123
Remove the peep-hole optimization of removing OP_Close opcodes that come
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before OP_Halt, as the extra work of removing those opcodes uses more cycles
than just running them.
FossilOrigin-Name: 984a96d79656c1b095aba1f88aca4bb787ba0bd8
2016-09-29 19:50:02 +00:00
drh
209bc522b0
Add the EP_Leaf flag bit to the Expr.flags field to indicate Expr
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nodes that do not have substructure. Use that bit to avoid unnecessary
recursion.
FossilOrigin-Name: 8a6ea455cd1bf42ae0a7f1f1789baf88d782db13
2016-09-23 21:36:24 +00:00
drh
511f9e8d29
Remove the internal sqlite3CodeOnce() interface, replacing it with a
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direct call to sqlite3VdbeAddOp0(v,OP_Once). Slightly smaller and faster.
FossilOrigin-Name: c3774c6a5fe48af91fda28e9e18c6ed9053ea992
2016-09-22 18:53:13 +00:00
drh
9e5eb9c8cc
Revise the implementation of OP_Once so that it is smaller, faster, and uses
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less memory. This also fixes an obscure bug introduced 3 days ago by check-in
[5990a1bdb4a073].
FossilOrigin-Name: 6bf5ba10d28f1b0a32aa9a560ae3143a1235eadb
2016-09-18 16:08:10 +00:00
drh
0dfa4f6fcc
Allow ROWID values in indexed vector comparisons.
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FossilOrigin-Name: b0cc6be4eb81f21b11796e1f14d4412bf21dea6e
2016-08-26 13:19:49 +00:00
drh
a1251bc40d
Add support for vector assignments in the SET clause of an UPDATE statement.
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FossilOrigin-Name: f320d47d6b7b08d9552c8444004bc256348bda90
2016-08-20 00:51:37 +00:00
drh
fc7f27b9d2
Change the way TK_SELECT_COLUMN is handled so that the subquery is only
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generated once even if part of the vector comparison is used for indexing
and the other part is now. This change also is a pathway to vector assignment
in UPDATE statements.
FossilOrigin-Name: d8feea7dcde83179bff303072426561cfe825e58
2016-08-20 00:07:01 +00:00
drh
b684fd5c4a
Merge recent enhancements from trunk.
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FossilOrigin-Name: b17872363b60edab05a5d382a44038aad91e4d9f
2016-08-19 15:41:24 +00:00
drh
9ef5e7708a
Add the capability to VACUUM an attached database by specifying the schema
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name as an argument to the VACUUM command. Since version 2.0, VACUUM has
accepted an argument which was silently ignored. Now it has meaning.
FossilOrigin-Name: 29d63059b4d2bb612523ac55ebfef040d054a64f
2016-08-19 14:20:56 +00:00
drh
db97e56217
Display VECTOR expressions in .wheretrace and .selecttrace debugging output.
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FossilOrigin-Name: 157347e2580e5078c4081d602e9d1a82d194e719
2016-08-18 17:55:57 +00:00
drh
5ea494425f
Merge recent enhancements from trunk.
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FossilOrigin-Name: 4768a1066cb9c7627064d7efec44188d6755cb03
2016-08-18 15:21:16 +00:00
drh
69c338263a
Rename the Db.zName field to Db.zDbSName to make it more descriptive and to
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distinguish it from all of the other "zName" variables scattered throughout
the code.
FossilOrigin-Name: 92a22f01343a898455fd61c3b8e7d7c954f5b569
2016-08-18 14:33:11 +00:00
drh
79752b6e63
Attempt to simplify the logic and generated code for vector comparisons.
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Basic comparison operators are working, but there are many indexing test
failures still to be worked through.
FossilOrigin-Name: dfc028cfbe7657d20727a2670ecadb1575eb8cbb
2016-08-13 10:02:17 +00:00
dan
d66e5794d1
Fix stat4-based cost estimates for vector range constraints.
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FossilOrigin-Name: 18af74abc8ceae47ab9fbee3e3e5bb37db8fcba5
2016-08-03 16:14:33 +00:00
dan
f9b2e05c75
Fix SQLITE_OMIT_SUBQUERY builds.
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FossilOrigin-Name: 339f85f414a484e44d2502d1ff7281caf9b7c838
2016-08-02 17:45:00 +00:00
dan
cb17ce9300
Merge latest trunk with this branch.
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FossilOrigin-Name: 63ae02d084a332250ff6fd8d8c80e53bf5422a68
2016-07-30 17:59:39 +00:00
dan
625015e0c9
Remove the EP_Vector expression flag.
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FossilOrigin-Name: e9d9c6d46b46160fad6aa6e3441a65a09157515f
2016-07-30 16:39:28 +00:00
dan
145b4ea519
Change the way "(a, b) = (SELECT *)" expressions are handled in where.c if there is an index on one of the columns only.
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FossilOrigin-Name: 4dfebff2924f46284d5b9cda69175f79b29d6028
2016-07-29 18:12:12 +00:00
mistachkin
11f69b879c
Using the header file 'intrin.h' requires MSVC 2005 or later.
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FossilOrigin-Name: 9fae75c08b7d3b3e13734193ad8398ef6971cbac
2016-07-29 17:36:27 +00:00
mistachkin
7617e4a8a4
Make sure the SQLITE_TCLAPI macro is always defined.
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FossilOrigin-Name: f2f1323cc4d2ad2d6794dbfae8d50b747213e85d
2016-07-28 17:11:20 +00:00
dan
34c125747d
Merge latest trunk changes into this branch.
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FossilOrigin-Name: 9685880f7baeb670739fdcf2d9df08e22abaa699
2016-07-28 13:59:21 +00:00
dan
d49fd4e89a
Fix some problems with multi-column IN(SELECT...) processing.
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FossilOrigin-Name: 719a3b2035a335ca8b9704646b1d641011e3ea0e
2016-07-27 19:33:04 +00:00
