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2423 Commits

Author SHA1 Message Date
drh
188d488409 Disable the use of memory-mapped I/O if the SQLITE_DISABLE_MMAP macro is 
defined.  Automatically define this macro for OpenBSD and QNX.  Other
systems are likely to be added to the disabled list over time.

FossilOrigin-Name: 8a4314a398c6c6efb25e6993c826b7e60d9bb1f9
 2013-04-08 20:47:49 +00:00
drh
a1f42c7c32 Add the SQLITE_CONFIG_MMAP_LIMIT configuration option for overriding the 
SQLITE_DEFAULT_MMAP_LIMIT compile-time setting.  Enhance "PRAGMA mmap_limit"
so that without a specific database name, it sets the limit on all database
files and changes the default for any future databases that might be added
using ATTACH.

FossilOrigin-Name: 78141d0a16dd1d56b575fccd149de7fa789cb06c
 2013-04-01 22:38:06 +00:00
drh
0d0614bdc6 Memory-mapped I/O is now on by default. The "PRAGMA mmap_limit(N)" can be 
used to issue a hint to the VFS to limit mmap space to N bytes.  The VFS
is free to ignore that hint if desired.  However, if "PRAGMA mmap_limit(0)"
is used, xFetch is never called.

FossilOrigin-Name: 1b37c4effdd03aa2ea938a71b4f22ed27391689b
 2013-03-25 23:09:28 +00:00
dan
5d8a137218 Add the sqlite3_io_methods.xMremap() method to the VFS interface. Also "PRAGMA mmap_size". 
FossilOrigin-Name: 6183f1bd86ceed76d22d9762f3d7eb33262c62d1
 2013-03-19 19:28:06 +00:00
dan
bfb5a031e5 Merge latest trunk changes into this branch. 
FossilOrigin-Name: d6cd3c780c6bc718d37e0f0b884e3e9a423d57be
 2013-03-13 06:34:51 +00:00
drh
1ccce44937 Fix the ORDER BY optimization with IN constraints when the RHS of the 
IN constraint is a descending index.

FossilOrigin-Name: 62316ebaca933f7e5df2018e8360a2b74234f30a
 2013-03-12 20:38:51 +00:00
drh
7a3e147ee2 Revised fix for the DESC ORDER BY and IN constraint bug, 
ticket [4dd95f6943fbd18].  The previous check-in was incorrect.

FossilOrigin-Name: 8b2eb7a43b4580f04c14ea8600cf080e0e7f384d
 2013-03-12 18:40:20 +00:00
drh
0fe456bb29 A proposed fix for the DESC ORDER BY bug of ticket [4dd95f6943fbd18]. 
Seems to work, but lots more testing is needed prior to moving to trunk.

FossilOrigin-Name: 614a038ad2fe111687d2bc1c0aa716d7eb8fdd7c
 2013-03-12 18:34:50 +00:00
dan
1bc8b87e46 Merge recent changes to trunk into sessions branch. 
FossilOrigin-Name: 62adb0e0d70e619becb68ffd2625d979bcc777cd
 2013-03-12 11:38:59 +00:00
dan
881bd79293 Define _BSD_SOURCE when building on OpenBSD. This is required for fchmod(). 
FossilOrigin-Name: f9027cb47bdec8dcebf1f038921b28d9e9928c18
 2013-03-11 13:37:52 +00:00
drh
b05567ed4b Merge all the latest trunk changes into the sessions branch. 
FossilOrigin-Name: d69d21903b883067c66dbcdefe6b369a6fe328b0
 2013-03-06 02:12:18 +00:00
drh
4bde37027c Truncate over-length source lines in sqliteInt.h to 80 characters or less. 
FossilOrigin-Name: d71abab08518f0be1eb73c7068566ab813652318
 2013-02-19 18:34:12 +00:00
drh
dab942860c Enhancements to the query planner to make use of indices for ORDER BY even 
when IN constraints are in the WHERE clause.  Add extended error codes for
all SQLITE_CONSTRAINT errors.

FossilOrigin-Name: 7e14dc734d7d941da5c3aa6612e26d93b5b929bd
 2013-02-13 13:42:50 +00:00
drh
a4b05e2874 Allow an index to be used for sorting even if prior terms of the index 
are constrained by IN operators.

FossilOrigin-Name: 2cef8b68f0e1216cf68bb7dd45a5a9a330748070
 2013-02-13 01:00:35 +00:00
drh
d91c1a1768 Add extended error codes for constraint errors. 
FossilOrigin-Name: 5461104668a49529577f21df97f6a0e7d8f0c679
 2013-02-09 13:58:25 +00:00
drh
2d96b934c8 Loop through the elements on the RHS of an IN operator in reverse order when 
the ORDER BY clauses specifies DESC.

FossilOrigin-Name: f78395c8896666bb1359b83fbcd58d5e3dbc39d3
 2013-02-08 18:48:23 +00:00
drh
e096205a7f New debugging pragmas: PRAGMA vdbe_debug=ON is short-hand for the sql_trace, 
vdbe_listing, and vdbe_trace pragmas.  PRAGMA vdbe_debug enables tracing of
sqlite3VdbeAddOp() calls.  None of this is active unless compiled with
SQLITE_DEBUG.

FossilOrigin-Name: ae565ff3e0836b0cb45cc0ba7f27fa8cb2d21d77
 2013-01-29 19:14:31 +00:00
drh
3dbfbcf43e Enhancements to the query planner to exploit transitive relationships in the 
WHERE clause, and other minor changes to bring the sessions branch into
alignment with the trunk.

FossilOrigin-Name: 82d3d1ae824e1fbc7958657be79231590ec17ace
 2013-01-25 02:10:06 +00:00
drh
eb5bc9261c Add the ability to disable transitive constraints using the 
sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS) interface.

FossilOrigin-Name: 593d67c8b0908daf7a70b2a310ed85515d384cbf
 2013-01-17 16:43:33 +00:00
drh
7a5bcc0f08 Enhance the query planner to exploit transitivity of join constraints in 
a multi-way join.

FossilOrigin-Name: 13171eb5dc19733276fbfd5515d75b70a9f5f5d7
 2013-01-16 17:08:58 +00:00
drh
89ded43b36 Merge recent trunk changes into the sessions branch. 
FossilOrigin-Name: 7e068e39b3b31364271664e0afb1cd95a235c26f
 2013-01-03 22:22:55 +00:00
drh
3e3f1a5b49 Now supports result sets of the form "TABLE.*" with nested FROM clauses. 
FossilOrigin-Name: 4cf5ed7ea198abc32f8118e79490e77f847f08c1
 2013-01-03 00:45:56 +00:00
drh
d530ee64ca Merge all the latest trunk changes into the name-resolution enhancement branch. 
FossilOrigin-Name: a5f4d2b641f7fafb6f1a312efeffb10f213d2d0a
 2013-01-02 12:29:05 +00:00
drh
b376daeb67 Reduce the size of the Index object (by 8 bytes on x64). 
FossilOrigin-Name: 5a2ac944839ec0c5b9147a035c6cbf0935f3d202
 2013-01-01 14:01:28 +00:00
drh
b2bb176b70 Add PRAGMA foreign_key_check. Name the child and parent tables as part of 
a "foreign key mismatch" error.

FossilOrigin-Name: e408dc9080594dc464b8763dece6b365772c6105
 2012-12-20 01:15:20 +00:00
drh
0dde4739f3 Add commentary to the ExprList object to explain how zSpan is overloaded. 
Add test cases for the new name resolution functionality.

FossilOrigin-Name: 3e7d84db7861911c9b2c7dcdabe0b213bf483d79
 2012-12-19 13:41:03 +00:00
drh
832ee3d4cc Optimize the degenerate case of a FROM clause table name enclosed all by 
itself inside parentheses.  Generate code as if the parentheses did not
exist, rather than the old behavior of manifesting the parenthesized table
into a transient table.  Also, tag every FROM-clause SELECT subquery that is
generated by a parenthesized FROM-clause expression using the SF_NestedFrom
flag.  The new SF_NestedFrom flag is not yet used for anything.

FossilOrigin-Name: 7fecced466d86a66b0b751c5b5608141e134fe2d
 2012-12-18 19:36:11 +00:00
drh
6c5b915fcb Prototype for PRAGMA that checks all foreign key constraints on a table. 
FossilOrigin-Name: 01c980e9bbdf82e0b37667b6403c19ed8c73ee62
 2012-12-17 16:46:37 +00:00
drh
bd36911f4d Pull the latest trunk changes into the sessions branch, and in particular 
the collating-sequence refactorization.

FossilOrigin-Name: 4f6d69ae94671df92b976525f75404c01270fef9
 2012-12-08 23:37:22 +00:00
drh
953f7611da Fix a long-standing issue with the distinct-as-aggregate optimization that 
only expressed when the new collating-sequence logic is turned on.

FossilOrigin-Name: 0aaf52a339808386984c30cca0c0c35ac2e70e7e
 2012-12-07 22:18:54 +00:00
drh
0a8a406e9b Some errors in veryquick resolved. Many more to go. 
FossilOrigin-Name: 972443b4eb282d45507da06c75e2cd46dd72326b
 2012-12-07 18:38:16 +00:00
drh
ae80ddea9f Remove the Expr.pColl field and compute the collating sequence as it is needed. 
This fixes the test script "shared9.test", though there is still a memory leak.
And there are other problems.  Consider this a work-in-progress.

FossilOrigin-Name: fd011cb22f2d899d94ec7ce22641d7a8f5e19972
 2012-12-06 21:16:43 +00:00
drh
e6f1e760d5 Remove obsolete comments from the definition of the CollSeq object. 
FossilOrigin-Name: 7b6951016f5bf4c21f843f09769ba176c709e785
 2012-12-06 01:03:15 +00:00
dan
3de0f18476 If the atomic-write property is enabled, a transaction may be committed in journal_mode=DELETE mode without ever actually creating a journal file on disk. In this case, do not attempt to unlink() the journal file when committing the transaction. 
FossilOrigin-Name: 11aa47b0a837858b644c304638e1cbbf482de2f0
 2012-12-05 10:01:35 +00:00
drh
26cd614dad Update the sessions branch to include the SQLLOG enhancement, the 
SQLITE_IOERR_DELETE_NOENT fix, and a fix for the number-of-documents
bug in FTS4.

FossilOrigin-Name: ba8d08b67021a32fda069c18b7eb93523e6f0d1f
 2012-11-27 21:56:28 +00:00
dan
ac45593931 Add an option to register global hooks used for logging all SQL executed by an application. 
FossilOrigin-Name: cd501bbccf3e62b002317592cc331770b32c129a
 2012-11-26 19:50:41 +00:00
drh
afe5b83dcd Merge the latest changes from trunk: chiefly the outer/inner loop query 
optimizer scoring enhancement and the INSTR() function.

FossilOrigin-Name: 2993ca20207f8dac02f58d01e31d68c84328356a
 2012-11-10 01:27:59 +00:00
drh
782d68a4cd Try to take into account the cost of inner loops when selecting which table 
of a join to use for the outer loop.

FossilOrigin-Name: 942556342a332b04a11169bb04f387d741ef9488
 2012-11-09 17:59:26 +00:00
drh
3dc2b9032f Pull all the latest trunk enhancements into the sessions branch. 
FossilOrigin-Name: fce667f2d93a4ba65ccf1e748469576a3cd7ffcc
 2012-10-30 21:03:48 +00:00
drh
a575967793 Make it possible to disable the subquery-by-coroutine optimization using 
sqlite3_test_control().  Remove an always-false conditional.

FossilOrigin-Name: 564631f3e45f8f8a8db69f1e0df0d1dadbad8a2c
 2012-10-30 14:39:12 +00:00
drh
21172c4cc0 Add an optimization that attempts to run a subquery as a coroutine rather 
than manifesting it into a temporary table.

FossilOrigin-Name: 7af3acbbd49a2114fcdada9ec907c68ba9b053bd
 2012-10-30 00:29:07 +00:00
drh
036a71a97c Merge all the latest core changes into the sessions branch. 
FossilOrigin-Name: 76767d651fe733614b1719aef9ad5ed4568234e4
 2012-10-15 14:25:16 +00:00
dan
06a2d82566 Move a couple of WAL-related function declarations in sqliteInt.h and pager.h into "#ifndef SQLITE_OMIT_WAL" blocks. Otherwise, the amalgamation fails to build using some compilers with SQLITE_OMIT_WAL (static function declared but not defined). 
FossilOrigin-Name: f7437153b90b25a1b77294a0f8d1b0bd4bd08c08
 2012-10-10 09:46:29 +00:00
drh
d1102b1ec7 Merge the latest trunk changes, especially the ORDER BY optimizer enhancements 
but also other fixes, onto the sessions branch.

FossilOrigin-Name: f1fbb8c5bfa84e84e0b8e2872d83b06a0c0d5acc
 2012-10-09 14:58:15 +00:00
dan
aedf9ee73a Merge the shared-cache related fixes from the shared-cache-fix branch to the trunk. 
FossilOrigin-Name: 698ec7769d4feea1782401479c61ce67d2113fd4
 2012-10-05 17:44:51 +00:00
drh
79e72a50aa Consolidate all occurrences of the "no such collation sequence" error message 
into a single spot.

FossilOrigin-Name: 8ea67522fb03134f355ecb776b70c6917241cab2
 2012-10-05 14:43:40 +00:00
dan
41fb5cd103 Shared-cache mode fixes for views and virtual tables. 
FossilOrigin-Name: 2b370dea704b59262c604af0efcef5660b194454
 2012-10-04 19:33:00 +00:00
drh
c4645dacfb Merge the latest trunk changes (especially "PRAGMA busy_timeout" and the 
ORDER BY query planner optimizations) into the sessions branch.

FossilOrigin-Name: 6ca8eae1f89d19ee23cbc3a869d85b57d29b4a7d
 2012-09-28 13:05:48 +00:00
drh
a9e3fc05f5 Fix some corner case behavior in the new ORDER BY optimization logic. 
Remove the SQLITE_OrderByIdx bit from the 
SQLITE_TESTCTRL_OPTIMIZATIONS mask, since enabling it caused many
TH3 tests to fail when the NO_OPT configuration parameter was engaged,
and since there really isn't any need to turn that optimization off.
The SQLITE_OrderByIdxJoin bit remains.

FossilOrigin-Name: 98b633717a1c9a08f6a1d00bc6bc891564ae7e9b
 2012-09-27 23:27:23 +00:00
drh
7e5418e4a4 Add more bits to the bit vector that is used to disable optimizations for 
built-in test.  Add specific bit patterns to disable ORDER BY using an
index in general and for joins.  Use macros to test for bits in the 
disabled-optimization bit vector, in order to make the code clearer.

FossilOrigin-Name: d2fcba1e143beca8c45724d2108870657c269e17
 2012-09-27 15:05:54 +00:00