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Author SHA1 Message Date
drh
fefa094921 Fix harmless compiler warnings in the new balance_nonroot() routine. 
FossilOrigin-Name: 83a1e5db926b3a6d40f4a5cf9a8e6852b9bac9ac
 2014-11-05 21:21:08 +00:00
drh
6d3f91d040 Change the query planner to do a better job of estimating the number rows 
selected by a BETWEEN operator using STAT4 when both upper and lower bounds
are contained within the same sample.

FossilOrigin-Name: 2d36be5d9a1cdd4fd2d54fc4eeece32a81cbacc1
 2014-11-05 19:26:12 +00:00
drh
6b5631e02f Make sure that NULL results from OP_Column are fully and completely NULL 
and do not have the MEM_Ephem bit set.  Fix for ticket [094d39a4c95ee4].

FossilOrigin-Name: 42705fd7d892c4fdfb95fbbb468c99569beece25
 2014-11-05 15:57:39 +00:00
dan
937994aa65 Add a test case to check that the previous commit is effective. 
FossilOrigin-Name: 948d6e5d07bc14b6de32ec2144c716a5532f894c
 2014-11-05 14:19:05 +00:00
drh
e0de876e27 Enhance whereLoopCheaperProperSubset(X,Y) so that it does not report true 
if X uses skip-scan less than Y, since in that case X might
deserve to be cheaper even if it is a proper subset.

FossilOrigin-Name: c106b755369c1f8546e897ecd2ac56fd09d6e885
 2014-11-05 13:13:13 +00:00
dan
8d1edb92c4 Add the ".scanstats on" command to the shell tool. Executing this command causes the shell tool to print values from sqlite3_stmt_scanstatus() after each query is run. 
FossilOrigin-Name: 7974c0ed10ffdc960a43fed89845c2bed428958d
 2014-11-05 09:07:28 +00:00
drh
547fb61807 Improved output formatting for the showstat4 tool. 
FossilOrigin-Name: 7df82c46da437bc743576358c25e758280067df8
 2014-11-04 21:38:45 +00:00
drh
4d9f188f00 Add various requirements evidence marks for sqlite3_config() options. 
FossilOrigin-Name: d423349d2cd8bc7e04f3d90ca7bab11e1ad86e25
 2014-11-04 17:23:24 +00:00
drh
cbd55b0362 Change the definition of SQLITE_CONFIG_SCRATCH so that at most one scratch 
buffer is used per thread.  Use the generic heap memory allocator for the
WalIterator object when running a checkpoint.

FossilOrigin-Name: 391c9b85abcb5ba300fb2e116384639310c69ed2
 2014-11-04 14:22:27 +00:00
drh
5279d3433c Improved documentation and addition of source-code evidence marks for the 
sqlite3_config() interface.

FossilOrigin-Name: 681031a436fdd4cce426d6cd43cbae6b83167d26
 2014-11-04 13:41:32 +00:00
drh
def6889d21 Add the SQLITE_CONFIG_PCACHE_HDRSZ option for sqlite3_config(). 
FossilOrigin-Name: 6eb03e62a34e8e0964175283587247b0212db604
 2014-11-04 12:11:23 +00:00
drh
d84bf205c3 Updates to the sqlite3_stmt_scanstatus() documentation. No changes to code. 
FossilOrigin-Name: d97c324eb1d870c994911c53fbf84205f4e3e7a1
 2014-11-03 18:03:00 +00:00
dan
0cb6948f6b Add the experimental sqlite3_stmt_scanstatus() API. For comparing the number of rows actually visited by a loop with the estimate used by the query planner. 
FossilOrigin-Name: ab3b0fc5760c6d428dbe1f974726a7d3526640bc
 2014-11-03 16:56:43 +00:00
dan
d72219da43 Fix a typo preventing this from building with SQLITE_ENABLE_STMT_SCANSTATUS defined. 
FossilOrigin-Name: 4c5714ab3dba19513374c7b1478221a0b90b450c
 2014-11-03 16:39:37 +00:00
drh
d1a1c23423 Refactor the interface to make it more easily extensible. 
FossilOrigin-Name: 7955342da4a35b57e4ae26690b8d40f7bba20e8f
 2014-11-03 16:35:55 +00:00
dan
e2f771b047 Add further tests. Fixes so that compilation without ENABLE_STMT_SCANSTATUS works. 
FossilOrigin-Name: a2303c719222f1effb51acc6b37930561148c00c
 2014-11-03 15:33:17 +00:00
drh
7b4d780b54 Use exponential buffer size growth in StrAccum, as long as the size does not 
grow to large, to avoid excess memory allocation resize operations.  Also,
document the fact that setting scratch memory causes SQLite to try to avoid
large memory allocations.

FossilOrigin-Name: a518bc3318232d652349eb29303ff250aee40459
 2014-11-03 14:46:29 +00:00
drh
7f5a7ecd21 When enlarging the size of a StrAccum object, use sqlite3DbMallocSize() to 
record the entire size of the allocation, not just the requested size.

FossilOrigin-Name: 3dda3c937469ce661d1cd0e8d8963a03e698ee39
 2014-11-03 13:24:12 +00:00
dan
037b5324bd Remove unused variable from struct WhereInfo. Add some explanatory comments to new code. 
FossilOrigin-Name: f5313e0c680d9baebefb1cf50ddadedd4418a334
 2014-11-03 11:25:32 +00:00
dan
43764a8efb Minor performance enhancements to SQLITE_ENABLE_STMT_SCANSTATUS code. 
FossilOrigin-Name: f13d6ba8a72d75838c4aaf85326c1129da027f8b
 2014-11-01 21:00:04 +00:00
dan
6f9702ed4d If SQLITE_ENABLE_STMT_SCANSTATUS is defined, record the number of times each VDBE opcode is executed. Derive the values returned by sqlite3_stmt_scanstatus() from these records on demand. 
FossilOrigin-Name: 9ea37422a8cc2fce51bb10508e5e90f40fd4b511
 2014-11-01 20:38:06 +00:00
drh
d1dcb23465 Add requirements marks and make minor tweaks to documentation. 
FossilOrigin-Name: 49188b2bb53a92b0b0b6aaf8247edeb0c1bcd1f5
 2014-11-01 18:32:18 +00:00
dan
89e71646df Minor fixes and documentation improvements for sqlite3_stmt_scanstatus(). 
FossilOrigin-Name: 8d8cc9608d30bb65fffcfe488e904411cbbc7f41
 2014-11-01 18:08:04 +00:00
dan
04489b6dce Add the experimental sqlite3_stmt_scanstatus() API. 
FossilOrigin-Name: 6a9bab34aeb6a01b612211a28c140de60a3e883c
 2014-10-31 20:11:32 +00:00
drh
0fb5daed34 Change the command-line shell man-page to use the ".tr" troff directive 
instead of ".cc" for escaping the initial "." characters in the ".help"
output.

FossilOrigin-Name: 67f0d469da28c023200239a1f3d0c6cef9ef0e45
 2014-10-31 14:46:51 +00:00
drh
d836d42383 Simplify the logic in the cell redistribution loop of balance_nonroot(). 
Enhance and clarify comments and add assert() statements for additional
verification of correctness.

FossilOrigin-Name: a07078b60007e88adea67bec5f0caf91f707ad78
 2014-10-31 14:26:36 +00:00
drh
bec021b9fc Simplify the math slightly, and reduce by one the number of loop iterations, 
for the loop in balance_nonroot() that moves cells between pages.

FossilOrigin-Name: 2e838db82e533598b3cb00011c04fc0d5a896895
 2014-10-31 12:22:00 +00:00
drh
9c0153457a Add the "varint.c" utility program in the tool directory. 
FossilOrigin-Name: ea5d56be5fe14934e4dbe9c17d46b058f487a231
 2014-10-31 10:31:59 +00:00
drh
768f29002e Remove an unnecessary branch from balance_nonroot(). 
FossilOrigin-Name: 9fc7c88e3f5221883aa6eafbf8af3be94db0c299
 2014-10-31 02:51:41 +00:00
drh
00fe08af82 In the balance_nonroot() routine, protect the values in aPgno[] array from 
change during the page sort, so that aPgno[] can be used to avoid unnecessary
pointer-map updates for auto_vacuum databases.

FossilOrigin-Name: 69c3924fe834a78d4a8d86833626bf5f68e33a3a
 2014-10-31 00:05:23 +00:00
drh
2a0df92542 Improvements to the wording of some comments. Reinstate an assert() that 
is only true for non-corrupt database files by adding an "|| CORRUPT_DB" term.

FossilOrigin-Name: 67adb44838f98805f86aecca634d9a3b07370b9e
 2014-10-30 23:14:56 +00:00
drh
ba0f999418 Tweaks to comments in btree.c. Minor code changes to enhance testability. 
FossilOrigin-Name: c7d9aa3a1ce63e27ec94295601bc89fecf1e4977
 2014-10-30 20:48:44 +00:00
drh
af8f513f9d Fix the %c format character in sqlite3VXPrintf() so that it correctly 
handles precisions larger than 70.

FossilOrigin-Name: 08a27440f19b7fc884464832e6105af1bf008172
 2014-10-29 18:20:18 +00:00
drh
22e8d833f0 In the OP_Column opcode, when extracting a field that is past the end of 
a short record (because the row was originally inserted prior to ALTER TABLE
ADD COLUMN) then make sure the output register is fully NULL and does not
contain leftover flags (such as MEM_Ephem) from its previous use.
Fix for ticket [43107840f1c02].

FossilOrigin-Name: 24780f8ddc1683fc62180e6961dc6bfe1168f4df
 2014-10-29 00:58:38 +00:00
dan
aa55563d7e Add new test file e_totalchanges.test, containing tests of the sqlite3_total_changes() interface. 
FossilOrigin-Name: f84af4adcc34d7a4c72027bf5b038a1a45a4c307
 2014-10-28 20:49:59 +00:00
drh
4f41b7dec5 Update the documentation on the sqlite3_randomness() interface to conform 
to enhancements associated with the SQLITE_ENABLE_API_ARMOR change.

FossilOrigin-Name: 96e9917c350dfe2069b87860bbb961424ff1105a
 2014-10-28 20:35:18 +00:00
dan
c3da667b25 Modify the documentation for sqlite3_changes() to make it more testable. Add tests and minor fixes for the same. 
FossilOrigin-Name: 41cdd0c422d61533a94870cb5ad094682956d472
 2014-10-28 18:24:16 +00:00
dan
dd8c460081 Fix a crash that could occur if the WHERE clause of an UPDATE statement on a view that does not feature a column named "rowid" contains a term such as "rowid=?". 
FossilOrigin-Name: 8523670d50004f3112b7871f11c8b8b02aab96ab
 2014-10-28 16:50:10 +00:00
drh
635e57fc48 Fix a faulty assert() in the DELETE code generator. 
FossilOrigin-Name: 95f8ebdbf87326f23cd38e561ac5632b5367a449
 2014-10-28 16:19:18 +00:00
drh
c3ef4fa88a Trivial simplification to the automatic index logic. 
FossilOrigin-Name: 23073a053931de324323f631a6613086786af411
 2014-10-28 15:58:50 +00:00
drh
916cd23b2c Bump the version number to 3.8.8 
FossilOrigin-Name: 1a7e711ed10860c7985e84b97cdfff748d940b9f
 2014-10-28 12:35:28 +00:00
drh
eefaf448db Correct the documentation on the maximum size of a scratch allocation. 
FossilOrigin-Name: 30f86eb3f9ac88f83ed9e23ea6cd1fccf68e0812
 2014-10-28 00:56:18 +00:00
mistachkin
2d8ad51c5b Add special handling for static mutexes in sqlite3_mutex_alloc() when automatic calls to sqlite3_initialize() are enabled. 
FossilOrigin-Name: 7857d27caa845e5629d94c2e66587dc89016daca
 2014-10-27 22:06:21 +00:00
drh
d61a18a9f1 Remove a small amount of unnecessary #ifdeffery from random.c. 
FossilOrigin-Name: 2b9340c8684bc382391e02813e960b3166f24daa
 2014-10-27 20:14:02 +00:00
mistachkin
df9c093e2c Fix compilation issue with MSVC due to a misplaced variable declaration. 
FossilOrigin-Name: 9588b345d09daaa49d24d7fb6cab732e64e5474e
 2014-10-27 19:58:29 +00:00
mistachkin
a95d8ca1fa Fix harmless compiler warning in an assert statement. 
FossilOrigin-Name: d33a1ff3aad0bfabf70a98ac338a68f82074e4fe
 2014-10-27 19:42:02 +00:00
drh
98d94211ce Fix a typo in the macro name of an #ifdef 
FossilOrigin-Name: 9646a136e69cf2583965dfc9fac5f056af4cdb62
 2014-10-27 19:39:51 +00:00
drh
a4b8fa2360 Add the SQLITE_ENABLE_API_ARMOR compile-time option for extra API parameter 
validation.  Enhance sqlite3_stricmp(), sqlite3_strnicmp(), and
sqlite3_uri_parameter() for improved NULL parameter handling.

FossilOrigin-Name: ffb9d8144bbc35bf3d929e0e13a663668fff0558
 2014-10-27 18:34:07 +00:00
drh
8a42d1bba1 Fix an unused variable in btree.c:allocateSpace(). 
FossilOrigin-Name: 637246165a14c4808b90d0437e4d43fa5fac659e
 2014-10-27 18:21:01 +00:00
dan
53838629ce Optimizations aimed at reducing the number of memcpy() operations required by balance_nonroot(). 
FossilOrigin-Name: face33bea1ba3a6d57780655fa827226b4d2baa9
 2014-10-27 14:26:54 +00:00