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12873 Commits

Author SHA1 Message Date
drh
f6aff80525 Set the connection-specific lastRowid value before calling any SQL function. 
FossilOrigin-Name: dff0f6422e60a7e2e4efb658aab202a119cfa702
 2014-10-08 14:28:31 +00:00
drh
6a15440378 Ensure that the Pager.pTmpSpace allocation is correct even if an OOM error 
occurs while reducing the page size.

FossilOrigin-Name: e4b43967fd9a0b4944be9ab5575bff3678be8ed5
 2014-10-08 13:34:21 +00:00
dan
923c0b53be Remove some temporary code in mallocA.test that was accidentally checked in. 
FossilOrigin-Name: dedd15f7cd13868f3be37646dd30ab7ceac5dea7
 2014-10-08 11:11:24 +00:00
drh
69afd9980e Fix the STAT4 range scan estimates for DESC indexes. 
FossilOrigin-Name: e3fe84005259ef9a6027d25793514cebb2d4e7e0
 2014-10-08 02:53:25 +00:00
drh
9a7b41d74a More intuitive labels on ".wheretrace" output. 
FossilOrigin-Name: adcb3fed489b580221c7bf2692a60e24248b23a0
 2014-10-08 00:08:08 +00:00
drh
722246e801 Make sure the sqlite3VdbeMemClearAndResize() routine is never called with a 
zero size parameter, since a size of zero could lead to either a memory leak
or an assertion fault.

FossilOrigin-Name: f672a380e2e52bede95ff11a533fd9f7d412d494
 2014-10-07 23:02:24 +00:00
drh
89a5833cb9 Fix the corruptI.test script so that it works with 
SQLITE_ENABLE_OVERSIZE_CELL_CHECK and with SQLITE_DEFAULT_AUTOVACUUM=1.

FossilOrigin-Name: e405b9e4a9ef322d84b20e902234b4f6aa196b1b
 2014-10-07 20:09:27 +00:00
drh
3b335fce5c Restrict the scope of the valueToText() routine. 
FossilOrigin-Name: 13c962b33df411a0d9ead0bb1969596faa286f79
 2014-10-07 16:59:22 +00:00
drh
d231aa3a42 Enhance (and fix) the MEMTYPE tags associated with heap memory allocations 
when SQLITE_MEMDEBUG is used.

FossilOrigin-Name: ca5b789e33c4e5ce366d8f5372d086442f84e230
 2014-10-07 15:46:54 +00:00
drh
85d117bc56 Remove unreachable branches in decodeIntArray() when compiling without 
STAT3 or STAT4.

FossilOrigin-Name: 80e1baa5c225c78902e08dbea9d577ff5757847f
 2014-10-06 18:33:49 +00:00
dan
61a157254f Improve the accuracy of the estimates used when searching an index for values not present in any stat4 samples. 
FossilOrigin-Name: 3aff9a9cac7aa994dfdaa0ab5c23ae73a1e820f0
 2014-10-06 14:37:48 +00:00
drh
b8e8d5055a Fix a harmless compiler warning inside an assert() in FTS4. 
FossilOrigin-Name: 418f3c9ad28672e5fe38d772d34e7cf8d26bc0e1
 2014-10-06 12:41:57 +00:00
drh
df868a4fbf Tweaks to documentation on sqlite3_open() and sqlite3_bind(). No code changes. 
FossilOrigin-Name: b8f7f19dc06c59de2e194d83e6c052fb7d28c71d
 2014-10-04 19:31:53 +00:00
drh
00729cba46 Updates to documentation and requirements marks. No code changes. 
FossilOrigin-Name: 0f8102d71a0ee828629f037775ad86fe2a544120
 2014-10-04 11:59:33 +00:00
dan
4ee3eb0ad4 Add a test to show that the change on this branch is effective. 
FossilOrigin-Name: fc619be057975b8be6d0958024c5d436edbdf084
 2014-10-04 10:22:01 +00:00
drh
75b170b164 Avoid leaking Index.aiRowEst memory if an OOM causes a rollback which deletes 
the index before the aiRowEst deletion code in sqlite3AnalysisLoad() routine
has a chance to run.  Since the aiRowEst now might be deleted from freeIndex()
which does not always have a db pointer, make sure the aiRowEst memory is
not held in lookaside.

FossilOrigin-Name: efd87ba142723ba131fcc985db6eb45c5a3c637b
 2014-10-04 00:07:44 +00:00
dan
0c1a18b294 Fix a division-by-zero error that might occur if the sqlite_stat1 table is corrupt. 
FossilOrigin-Name: f9c053b23ece877a7fdbe82204a10592f2d24a2d
 2014-10-03 19:29:39 +00:00
dan
43085d7425 Improve the accuracy of the estimates used when searching an index for values not present in any stat4 samples under some circumstances. 
FossilOrigin-Name: e6f7f97dbc677c9f01b23142928c3fa7307c2fba
 2014-10-03 19:16:53 +00:00
drh
79f7af9a9e Add requirements marks on the sqlite3_db_status() interface implementation. 
Fix a typo in the documentation.  Fix the new sqlite3_result_text64() routine
so that it works correctly with an encoding parameter of SQLITE_UTF16.

FossilOrigin-Name: d2fc322728331ae2d147c8496129df5e3c655eb5
 2014-10-03 16:00:51 +00:00
drh
8da47419dd Update to requirements marks related to changes in the memory allocation 
interface and enhancement of the documentation regarding DEFAULT clauses
in CREATE TABLE.

FossilOrigin-Name: 440705b98a3429b830ea85e71cc1e414bc6d8058
 2014-10-03 14:54:47 +00:00
drh
2a3d1d17fd Avoid a NULL pointer deference when processing the IS operator if the 
right-hand side is an illegal "#ID" style variable.
Fix for ticket [8c32a33a53092c85a15b]

FossilOrigin-Name: ffe7573636c8057614b02f0a85559e1857fd04e4
 2014-10-02 21:52:35 +00:00
drh
ccaba81e26 Show the TK_DOT operator in the TreeView debugging output. 
No changes to production code.

FossilOrigin-Name: 07c89940c49a5dca3205a4b6fa8290f23bcb6e10
 2014-10-01 13:17:34 +00:00
dan
9501a64516 Avoid ever writing before the start of an allocated buffer in the DIRECT_OVERFLOW_READ code. Fix for [e3a290961a6]. 
FossilOrigin-Name: c3c15d20c6913811956a5041c959a56ca4eeb5eb
 2014-10-01 12:01:10 +00:00
drh
b08cd3f345 Improvements to the new syntax-tree output routines: Omit the "END SELECT" 
mark and instead terminate the graph at the last item.  Increase the maximum
tree depth to 100.

FossilOrigin-Name: 5ce05757aac80b99c3b2141cd301809f8e28e661
 2014-09-30 19:04:41 +00:00
drh
36be4c49e4 Enable the query planner to deal with WHERE clauses that have OR terms 
nested within AND terms that are nested within OR terms.  Also remove an
unused function declaration.

FossilOrigin-Name: b6b289182f6590288ebc7b9efbcb29b6b4480538
 2014-09-30 17:31:23 +00:00
drh
0a99ba3bc8 Further enhancements to the "wheretrace" debugging output. 
FossilOrigin-Name: 670993eb8113f386cb2cb8b1507917f6da3b4d98
 2014-09-30 17:03:35 +00:00
drh
5265149c0d Enhanced debug output for OR-logic in the query loop optimizer. 
FossilOrigin-Name: 2e375eae473e4a9f2e7870d59e22ba39051ecbce
 2014-09-30 14:14:19 +00:00
drh
c90713d3d2 Show tree diagrams of data structures in the debugging output when the 0x100 
bit is set on sqlite3WhereTrace or sqlite3SelectTrace.

FossilOrigin-Name: 92e0b4bd4d75e8b000586e51a07b3e181d9af20b
 2014-09-30 13:46:49 +00:00
drh
4fa4a54f7e Remove the SQLITE_ENABLE_TREE_EXPLAIN compile-time option. Add alternative 
debugging display routines: sqlite3TreeViewExpr(), sqlite3TreeViewExprList(),
and sqlite3TreeViewSelect().

FossilOrigin-Name: 4ff51325d6b41d0c59e303b573700ec80c51d216
 2014-09-30 12:33:33 +00:00
drh
39c4b82b5a Fix the header comment in sqlite3VdbeDeletePriorOpcode(). No changes to 
code.

FossilOrigin-Name: 7fb1626866c2f8dad84c7e6184824be3efd71ca2
 2014-09-29 15:42:01 +00:00
drh
7682a476f6 Ensure that the OP_Prev opcode verifies that content has not been deleted 
out from under the cursor.  Fix for ticket [209d31e3161b9e9ff].

FossilOrigin-Name: 414f0d6a647a4d040b5463c73c5e15e699d85b4c
 2014-09-29 15:00:28 +00:00
mistachkin
843e4cdea9 Add an assert() to verify the last-row-id for the database just prior to calling a SQL function. 
FossilOrigin-Name: d026f0c944ce812732d3595eaa3c5d432a86c7dd
 2014-09-26 18:30:11 +00:00
drh
867db83159 Fix the "PRAGMA integrity_check" command so that it avoids formatting error 
message context messages until it actually needs to generate an error message.
This avoids much formatting, and hence greatly improves the performance of
"PRAGMA integrity_check" in the common case when there are no errors.  It also
makes the code a little smaller.

FossilOrigin-Name: 83913515830aa850f9e38406f9422d7e88dcab66
 2014-09-26 02:41:05 +00:00
drh
3b130beb15 If an SQL function makes a recursive call to do an INSERT into the same 
database, make sure that the last_insert_rowid() for that INSERT is recorded.

FossilOrigin-Name: e93aecc090c2a1d3c231bb2bde044886eff0bdf7
 2014-09-26 01:10:02 +00:00
drh
d863346194 Minor code reformatting and comment change, to improve clarity. 
No logic changes.

FossilOrigin-Name: baeb72a356d73e6f624edacd2986ab766105e177
 2014-09-25 17:42:41 +00:00
drh
a15cc47f81 Simplifications to the SQL function and aggregate calling procedures. 
FossilOrigin-Name: 3467049a1705b49905ea88a5c6becb6fe318f2fa
 2014-09-25 13:17:30 +00:00
drh
2c4dc635a1 Simplification to the random rowid picking logic that begins running when 
the maximum possible rowid has already been used.

FossilOrigin-Name: 1330c72e172324c68ab49e5bb2ceba985935ae01
 2014-09-25 12:31:28 +00:00
drh
9fdfdc893b Still more performance enhancements to the LIKE and GLOB operators. 
FossilOrigin-Name: 6c8924cacc2b875270770fed2cc3b1884f57a655
 2014-09-25 11:08:57 +00:00
drh
88b3322f27 More performance optimization for the LIKE and GLOB operators. 
FossilOrigin-Name: 5ab1023d6cfe31fa8a194804b8216058977ac973
 2014-09-25 03:51:37 +00:00
drh
97348b37c2 Change that might allow SQLite to build and work using the EBCDIC character 
set.

FossilOrigin-Name: ef30e0352b3d4a29749cd0872c10e45a6649ec52
 2014-09-25 02:44:29 +00:00
drh
328d913cbd Size reduction and performance improvement in the LIKE and GLOB operators. 
FossilOrigin-Name: b2c89ef49cd19b8031a8149a2dc47cea07dd04e0
 2014-09-25 00:56:00 +00:00
drh
3fbb022b98 Have each open database allocate its pTmpSpace when the first write cursor 
is opened, rather than on each insert or delete, for a small space savings
and performance boost.

FossilOrigin-Name: 99323552c001bc9173eb2a44542234c8ef7a9845
 2014-09-24 19:47:27 +00:00
drh
b2325b72df Small performance and size optimization for btreeUnlockIfUnused(). 
FossilOrigin-Name: 13c746f85d254475b10c3dd58555acd3bbead0ce
 2014-09-24 18:31:07 +00:00
drh
feada2df39 Do not allow parameters in a DEFAULT clause of a CREATE TABLE statement. 
Ticket [78c0c8c3c9f7c1].

FossilOrigin-Name: 1ad2bc1ed4c4ac81ac67a9660761f0eeb47c7fef
 2014-09-24 13:20:22 +00:00
drh
9bfdc25062 Have the clearCell() routine return the cell size to the caller, rather 
than have the caller make a separate call to cellSizePtr().

FossilOrigin-Name: f21d217583c205dc17f98bb4877fd4ed98cefcb1
 2014-09-24 02:05:41 +00:00
drh
3f3874030c Shorten all lines of source code in btree.c to at most 80 characters. 
No logical changes.

FossilOrigin-Name: 5dd41cdbfebdd088ebd9a90a394ee296c207ad90
 2014-09-24 01:23:00 +00:00
drh
3e28ff5cb5 Add the MemPage.noPayload boolean and use it to help 
cellSizePtr() and btreeParseCellPtr() run faster.

FossilOrigin-Name: 8e3375313ebbf26b68561f3ed31d2a488222e5d0
 2014-09-24 00:59:08 +00:00
drh
c46838309c Remove an unused C-preprocessor macro. No functional changes to the code. 
FossilOrigin-Name: f480582ccae0e9a917d4523191025bd16016ba64
 2014-09-23 23:12:53 +00:00
drh
6200c88123 Avoid calling btreeParseCellPtr() from within fillInCell() since most of 
what btreeParseCellPtr() computes is ignored by fillInCell().  Instead, have
fillInCell() compute the values it needs inline.  Performance improvement.

FossilOrigin-Name: 4147f6671e3faa8ddffab8387a6c7d9b5b962fc8
 2014-09-23 22:36:25 +00:00
drh
ab1cc58b70 Simplify the CellInfo structure for a size reduction and performance 
improvement.

FossilOrigin-Name: bf59df66b3613c38cfb13a68091b8328ebb22c78
 2014-09-23 21:25:19 +00:00
drh
3b8fea9ec6 Add the "multiplex_truncate" PRAGMA to the multiplexor extension, for 
querying and setting the truncate flag on a database connection.

FossilOrigin-Name: d2962a5f388f30a02429e0c8b87399f482b5604c
 2014-09-23 18:30:00 +00:00
drh
14f0e2128a Adjust skip-scan cost estimates slightly so that a full table scan is 
preferred over a skip-scan to a column with only two distinct values.

FossilOrigin-Name: ae9a42b268ad3f7d21a5813bb931e795c6917014
 2014-09-23 01:40:59 +00:00
drh
a4bb5b0726 Fix to payload size overflow detection in the cellSizePtr() change of 
the previous check-in.

FossilOrigin-Name: 7609744014c6a84a8379794a0351a2e9626ec86b
 2014-09-22 20:38:10 +00:00
drh
dc41d60aaa Size reduction and substantial performance increase for cellSizePtr(). 
FossilOrigin-Name: bc8bbf3207288d160287519c3b7123997996b440
 2014-09-22 19:51:35 +00:00
drh
7e07433fe7 Tune the query planner to be more aggressive about using automatic indexes 
on views and subqueries for which there is not opportunity to declare a
persistent schema index.

FossilOrigin-Name: 41de1643bfc9ae25e20790d707e2789b665baa2b
 2014-09-22 14:30:51 +00:00
drh
d9f9441d7d Disable shared memory operations using the unix-nolock VFS. 
FossilOrigin-Name: 10a6e510497b471d67ac3dfb19ff256a7d18adf4
 2014-09-22 03:22:27 +00:00
drh
6656630b63 Correctly handle an ORDER BY clause on an outer query when applying 
the compound-subquery flattening optimization.  Ticket [89398880bcfff].
Also add the SQLITE_ENABLE_SELECTTRACE option for additional debugging
and analysis information about select statement processing.

FossilOrigin-Name: d5880abd63c83c88e135257373afa0a3fd88297e
 2014-09-21 22:31:52 +00:00
drh
d7643037e6 Add test cases for ticket [89398880bcfff9]. 
FossilOrigin-Name: 9683e001ed38b41979220eef0bdfcb54df5f3191
 2014-09-21 20:31:26 +00:00
drh
249489331c Add the "showauth" extension in ext/misc. 
FossilOrigin-Name: 28d52c1c38d849f099bc777f5987d1ef89680c2a
 2014-09-21 17:51:37 +00:00
drh
eb9b884c2d Improved ".selecttrace" output. 
FossilOrigin-Name: c0b61f7092a7fd2c5f51db26ce7a7a5c75c227fe
 2014-09-21 00:27:26 +00:00
dan
7c0a4720ca Candidate fix for [d11a6e908f]. 
FossilOrigin-Name: 89398880bcfff96e91d2a9c45774f5fb3209ffc1
 2014-09-20 20:38:48 +00:00
drh
9300adbc79 Fix the SELECTTRACE_ENABLE macro so that it doesn't cause problems for 
testfixture.  Add new SELECTTRACE() calls.

FossilOrigin-Name: f1ba68f131d2f03e4a7bc50cde23a7609d384279
 2014-09-20 20:24:49 +00:00
drh
abd4c72357 Enable SELECT query planning tracing when compiled with 
SQLITE_ENABLE_SELECTTRACE and either SQLITE_DEBUG or SQLITE_TEST.

FossilOrigin-Name: cbe0cf9ddf46f0a678c85d49bfa74e3b7712e1a1
 2014-09-20 18:18:33 +00:00
drh
af6f25aacc Fix the usage of the _GNU_SOURCE and _BSD_SOURCE macros in the main 
internal header file, sqliteInt.h.  Set HAVE_STRCHRNUL to 1 by default on
Linux only.

FossilOrigin-Name: 59e2c9df02d7e988c5ad44c560ead1e5288b12e7
 2014-09-20 00:35:05 +00:00
drh
4e7a479597 Only enable HAVE_STRCHRNUL by default on linux, as that is the only place 
it appears to work by default.

FossilOrigin-Name: 0fac2c045f47c7735af4eb68ced81d8b43622a1f
 2014-09-20 00:29:20 +00:00
mistachkin
33ac4c8bf5 Revise macro usage in 'sqliteInt.h'. 
FossilOrigin-Name: 35db3e2f350ca2bc6bb9e1a647aec7f93bfb7065
 2014-09-20 00:02:23 +00:00
drh
e7a3466458 Simplify two conditionals and add testcase() macros to the affinity transform 
logic in the comparison operators.

FossilOrigin-Name: 544664cadfb4e504bc0b321c865d1ecb8a831e20
 2014-09-19 22:44:20 +00:00
drh
1eda9f7d87 Recognize the invariant that a Mem object cannot be MEM_Dyn and have 
a non-zero szMalloc at the same time.  Enforce this with assert()s and
exploit it in the sqlite3VdbeMemClearAndResize() routine for a performance
increase.

FossilOrigin-Name: 3b21cf2b284048da4b728a5d6ec89e5c330144d4
 2014-09-19 22:30:49 +00:00
drh
11a6eee8e1 Tighten the conditions under which applyNumericAffinity() be called and add 
assert() statements to prove that it is never called otherwise.

FossilOrigin-Name: e996ca32cb643c558b616c0dd872f3351b6aa3ef
 2014-09-19 22:01:54 +00:00
drh
4583c37ca0 Fix the affinity on inserts into the ANALYZE tables. Change the affinity 
characters to be upper case, to make the P5 parameter of comparison operators
easier to read.

FossilOrigin-Name: 3f3ca76aea38d566a574f4403b375bdac32854ed
 2014-09-19 20:13:25 +00:00
drh
d74a90eab8 Do not attempt to extend the temp file if VFS version 3 is not supported and 
hence memory mapped I/O is unavailable.

FossilOrigin-Name: 3ab20ba14f0204efeec62c7dbb87cb3f60e2497f
 2014-09-19 19:43:20 +00:00
drh
142341cd23 Make the "nolock" VFS on unix a version-3 VFS so that the sorter can 
use memory-mapped I/O.

FossilOrigin-Name: 3db78d6100a1ecf58c18eec3abefa7d1250c649c
 2014-09-19 19:00:48 +00:00
drh
0c8f760ab3 Remove a local variable from the OP_Column implementation, resulting in a 
modest size reduction and a performance increase.

FossilOrigin-Name: 6199760d1340858d97c845177986b783da915d9e
 2014-09-19 16:56:45 +00:00
drh
069c23c947 Small size reduction and performance increase for releaseMemArray(). 
FossilOrigin-Name: 24cd32d681df58f687b2afbe4b13d579e3efdd4b
 2014-09-19 16:13:12 +00:00
drh
7abda85607 Updates to comments. No code changes. 
FossilOrigin-Name: 9b42c3da6b2593a10b8fe4b2fcc3d650132625c1
 2014-09-19 16:02:06 +00:00
drh
7b5ebcaf26 The OP_Column opcode runs faster and is smaller by manually in-lining the 
code that persists string values in the output register.

FossilOrigin-Name: 36b613ccf0ddb764af90841994da91b7fcaa8f00
 2014-09-19 15:28:33 +00:00
drh
a5476e9254 Add the sqlite3VdbeMemClearAndResize() function. Fix a sorting-index 
prefilter problem.

FossilOrigin-Name: 987a7a211913b3949da20e43423af376f72a28ba
 2014-09-19 04:42:38 +00:00
drh
137fd4fda2 Make sure that the sorting-index pre-filter recognizes that a rowid reference 
might be sortable.  This fixes a performance regression.

FossilOrigin-Name: 72727b68cd07969165f1f0943cc7e1a265436653
 2014-09-19 02:01:37 +00:00
drh
322f2852f2 Add the sqlite3VdbeMemClearAndResize() interface to be used in place of 
sqlite3VdbeMemGrow().

FossilOrigin-Name: 5b9b8987797abf7c68d2c3154f6657be9b8b1c8f
 2014-09-19 00:43:39 +00:00
drh
17bcb10299 Add the Mem.szMalloc element to the Mem object and use it to keep track of 
the size of the Mem.zMalloc allocation.

FossilOrigin-Name: 9c09ac353df6041808cace41880f4729ee73f5e1
 2014-09-18 21:25:33 +00:00
mistachkin
26c79a060b Correct typos in comments. No changes to code. 
FossilOrigin-Name: 55879932116d373c95a5f32ec44b53a9c3f4db24
 2014-09-18 18:55:47 +00:00
drh
74eaba4de2 Merge the Mem.r value into the MemValue union as Mem.u.r. Hence, a Mem can 
now store an integer or a real but not both at the same time.  Strings are
still stored in a separate element Mem.z, for now.

FossilOrigin-Name: 4c8c89d7e62aecfe2eb735f7bb114aed6b452847
 2014-09-18 17:52:15 +00:00
drh
24a096297e Performance improvement for affinity transformations on comparison operators. 
FossilOrigin-Name: d7afdcbac24350b73a30c06c45cf0f2122820e4f
 2014-09-18 16:28:59 +00:00
drh
7ea31ccb01 Since numeric affinity is the most common case, check it first. Interchange 
the NONE and TEXT affinity codes for easier checking of no affinity.

FossilOrigin-Name: 4ef4c9a7c8510203bce0941dda2f76ded8da1de2
 2014-09-18 14:36:00 +00:00
dan
9675d5dabc Modify an assert() within sqlite3PagerWalFramesize(), a function only ever used by zipvfs, to account for recent zipvfs changes. 
FossilOrigin-Name: 3bd7c1b2faa2d4cc95b255633204006849bfd5e0
 2014-09-18 09:59:28 +00:00
drh
20f3df046a Fix harmless warnings on 32-bit MSVC builds. 
FossilOrigin-Name: 5192f964b2a85459553f1cea741b9791606ccc4e
 2014-09-18 02:20:54 +00:00
drh
760b15984b Make sure of the strchrnul() library function on platforms where it is 
available.

FossilOrigin-Name: ef1aa10b7f54912cba71cd0a98c5055d501de54f
 2014-09-18 01:50:09 +00:00
drh
9031494af2 Merge micro-optimizations into trunk after fixing the build on MSVC. 
Performance now shows 7.58% faster than the 3.8.6 release on x64 with
gcc 4.8.1 and -Os.

FossilOrigin-Name: 1de558bcb13edc4e9a42a0b05e4b0ed6b14286a4
 2014-09-18 01:29:11 +00:00
drh
3329a63ac5 Fix compiler warnings and change the nullMem structure initializer into a 
format that MSVC can understand.

FossilOrigin-Name: 163bfae8583b2d3002a3a43d6bf8a66fefd73acb
 2014-09-18 01:21:43 +00:00
drh
ca5506bdc4 Performance improvement and slight size reduction to the comparison operators 
in the VDBE.

FossilOrigin-Name: 14052a7d088bed8196d90a3361ce717a5193bdc8
 2014-09-17 23:37:38 +00:00
drh
d3b74200a8 In the Mem object, stop requiring that Mem.xDel be NULL when the MEM_Dyn 
bit is clear.  Also reduce the amount of initialization of Mem objects.
All for a small size reduction and performance increase.

FossilOrigin-Name: fdddb477c89dabb9f7bf2d5ccb32534868df3a03
 2014-09-17 16:41:15 +00:00
drh
0725cabe3a Improved interface to the Mem object handling. Small size reduction and 
performance increase.

FossilOrigin-Name: 4e437844322cc20eef92928b53fa6b37eded586e
 2014-09-17 14:52:46 +00:00
drh
6b478bcd9e Continuing cleanup of memory register memory allocation handling. 
FossilOrigin-Name: 2598aedc5dd2bac67e2e518a31f2803e469c2ba6
 2014-09-16 21:54:11 +00:00
drh
8740a60016 Make sure registers are cleared properly prior to being used to store 
the result of an OP_Column operator.

FossilOrigin-Name: 78fb8838d80b229418c347c63579989432e1af7d
 2014-09-16 20:05:21 +00:00
drh
2a2a696cd7 Simplification of the OP_Column logic for the case of rows with overflow. 
FossilOrigin-Name: f73678038d8fc399c1ca55230ae45962007c909c
 2014-09-16 18:22:44 +00:00
drh
897a2d50f2 Remove an unused parameter from sqlite3VdbeIdxRowid(). This is cosmetic 
only as the C-compiler optimizers were already omitting this parameter on
amalgamation builds.

FossilOrigin-Name: a10a6bba4963761b490b7243b388dcc920c4cfed
 2014-09-16 14:55:08 +00:00
drh
75179ded97 Reduce the number of arguments to RecordCompare functions from 4 to 3, 
resulting in a small performance increase.

FossilOrigin-Name: 8239c35aedd583af79505378bb7dbb78346a3f45
 2014-09-16 14:37:35 +00:00
drh
035e563bf6 Reorder the elements of the Mem object for a small size reduction and 
performance improvement.

FossilOrigin-Name: 0be3019ed794c10de67dfd645ceea7d45815bc4b
 2014-09-16 14:16:31 +00:00
drh
7f4b19f170 Changes to sqlite3VdbeRecordUnpack() to make it slightly smaller and faster. 
FossilOrigin-Name: 8fb90da77ce0e662c1ef1ae0d854e5164494b7af
 2014-09-16 13:30:05 +00:00
drh
982ff72f0f Performance improvement to the sqlite3MemCompare() routine by factoring out 
sqlite3BlobCompare().

FossilOrigin-Name: 20ed2321b09ba076e50f9fc2f42c135b25746d72
 2014-09-16 03:24:43 +00:00