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21,092 Commits 1,607 Branches 185 Tags
d901b168b58bb82192bcfc5dcb3b7ae316af1497
Commit Graph

441 Commits

Author SHA1 Message Date
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
053a128f55 Tighter VDBE code for the WHERE_DISTINCT_ORDERED case of DISTINCT keyword 
handling.

FossilOrigin-Name: 94b48064db3cbb43e911fdf7183218b08146ec10
 2012-09-19 21:15:46 +00:00
drh
37f58e9902 Avoid repeating calls to the sqlite3_trace() callback when the same statement 
is evaluted multiple times by sqlite3_step() due to an SQLITE_SCHEMA
reprepare.

FossilOrigin-Name: 39f763bfc04174ee0fe2cdf6a92b7c12f726bd1b
 2012-09-04 21:34:26 +00:00
drh
16de7f4d32 Merge all the latest trunk changes into the sessions branch. 
FossilOrigin-Name: fc07a4795e027108674d1d41eb4350df629ddc8b
 2012-08-15 16:21:55 +00:00
drh
c041c16ce1 Mark parameters to sorter interfaces as const where appropriate. 
FossilOrigin-Name: d8da26f1f43610ac83af2a5d0e170be5abaf7aaa
 2012-07-24 19:46:38 +00:00
drh
fdf1795618 Pull all the latest trunk changes into the sessions branch. 
FossilOrigin-Name: 361fb66a799f4f253e61ca94d999accde2c75b2c
 2012-02-10 17:54:52 +00:00
drh
3fb757b487 More structure packing for smaller objects and less memory usage. 
FossilOrigin-Name: f14e7f29ff7f2d7706dc3cdd715e103e04ba0ef1
 2012-02-02 21:02:43 +00:00
drh
7a95789c0c For queries of the form "SELECT p, max(q) FROM t1", the value of column p 
returned is the one on the same row that holds the maximum value of q.

FossilOrigin-Name: adb29232b659c5332b6841776372407fcc350b08
 2012-02-02 17:35:43 +00:00
drh
c35f3d5027 Very small performance enhancement and reduction in size of the sqlite3_stmt 
object.

FossilOrigin-Name: a38d57a4e5d79a0baefdf776e0e2d61423681a4f
 2012-02-01 19:03:38 +00:00
dan
af49af7f9e Update sessions branch with latest changes from trunk. 
FossilOrigin-Name: 01c84fd391a0ca1f5245c7eff0644d0cc6cff86b
 2012-01-14 13:50:12 +00:00
drh
45d29309a7 Fix typos in commands. Combine the ExpandBlob and expandBlob macros into one. 
FossilOrigin-Name: fc9179e154751b51ddef429600d30a89d4a098bd
 2012-01-08 22:18:33 +00:00
drh
54cced185c Merge all of the latest trunk changes into the sessions branch. 
FossilOrigin-Name: a9bcb432f58b96f079a73c456efd4851c582221e
 2012-01-05 13:02:36 +00:00
drh
e4c88c0c38 Fix typos and comments and make minor changes to a few function names, 
as suggested by readership.

FossilOrigin-Name: e9d05cbb7676cbda83f1b3b71447404d7edde898
 2012-01-04 12:57:45 +00:00
drh
678a9aa7bd Import the experimental parse-tree explainer, with fixes, from the 
tree-explain branch.

FossilOrigin-Name: bcbc7152d49107afa926c8950360c61a6cf3d244
 2011-12-10 15:55:01 +00:00
drh
a5eec8c8c3 Merge the latest trunk changes into tree-explain branch. 
FossilOrigin-Name: 1a360da0f8314f232c224c71829646bc7558892b
 2011-12-10 14:44:31 +00:00
dan
1d8cb21fdb Modify the OP_Once opcode so that it works correctly in trigger sub-programs. This is a candidate fix for [7bbfb7d442]. 
FossilOrigin-Name: 557c69055a300b4082830b5f4803091dca1c3140
 2011-12-09 13:24:16 +00:00
drh
7e02e5e6b5 Begin adding the data-structure explaining subsystem. All is contained within 
FossilOrigin-Name: 79ae51c5b1b20ed0a425a87e65a32a096a80b7e1
 2011-12-06 19:44:51 +00:00
drh
f004e1d69e Merge in all changes found in the version 3.7.9 release candidate. 
FossilOrigin-Name: 23580718e1c15ddb89682d0e7566da4d7276bfe9
 2011-10-31 14:34:31 +00:00
dan
029ead645d If an error occurs within sqlite3_step() on a statement prepared using sqlite3_prepare_v2(), transfer both the error code and error message to the database handle before sqlite3_step() returns (so that they are available via sqlite3_errcode() and sqlite3_errmsg(). Prior to this commit, only the error code was transfered. The error message was not available until after either sqlite3_reset() or sqlite3_finalize() had been called on the statement handle. 
FossilOrigin-Name: 8f88cc4e616b4b30ed349f89e148f782da5cb6c4
 2011-10-27 15:19:58 +00:00
dan
93bca69578 Merge latest changes from the trunk into the sessions branch. 
FossilOrigin-Name: c00e45ede7cbf71a3a6d1ccad0b9275010ca8493
 2011-09-14 19:41:44 +00:00
drh
ca892a7252 The build works again with -DSQLITE_OMIT_MERGE_SORT. The merge-sorter now 
avoids spilling to disk (letting the in-memory linked list grow without
bound) if PRAGMA temp_store=3.

FossilOrigin-Name: 68e26c4487696d194ee85370380e4b0e56d206ee
 2011-09-03 00:17:51 +00:00
dan
5134d1357e Instead of a temporary b-tree, use a linked-list and merge-sort to sort records in main memory in vdbesort.c. 
FossilOrigin-Name: 7769fb988d9be0f2d8129aaac19620ac88f9b4a6
 2011-09-02 10:31:11 +00:00
drh
c6aff30ca4 Experimental code-generator changes to utilize new opcodes for sorting. 
FossilOrigin-Name: bab2e560f6cb989c83a96aad60f666960ede7abe
 2011-09-01 15:32:47 +00:00
drh
2d36eb43a4 About a 1% overall performance improvement by using a macro to avoid 
no-op calls to sqlite3MemReleaseExternal().

FossilOrigin-Name: ff71d20a9ed129bd1785a3f7a777ce62098735b7
 2011-08-29 02:49:41 +00:00
drh
7cca2e6259 Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: eb036d6f81e15bac013316bf5b1b2ba3e0bd4605
 2011-08-26 19:20:47 +00:00
dan
e6f7bc6379 Remove an unused parameter from a function in vdbesort.c. Fix some comments and other details in the same file. 
FossilOrigin-Name: 1a8498d8037a1b93e56951bbdbb76291bd5a4f87
 2011-08-12 16:11:43 +00:00
dan
689ab89781 Add the SQLITE_OMIT_MERGE_SORT pre-processor directive. To omit the code in vdbesort.c. 
FossilOrigin-Name: 4ced2394b10d0a4f86422ff893bcdf3cf32591e3
 2011-08-12 15:02:00 +00:00
dan
1e74e602ec In temp files used for merge sorting, store the size of each packed-memory-array at the start of the array itself. This is to avoid having to store the offsets of all arrays in the (potentially very large) file in main-memory. 
FossilOrigin-Name: 8051c1767c4386b0f14a66742d9fac41e001eb07
 2011-08-06 12:01:58 +00:00
dan
7fe6270b4d Minor fixes to vdbesort.c code in preparation for a major rework. 
FossilOrigin-Name: 7f339c0e2655310d7530041c379b082d49ce8c7f
 2011-08-02 10:56:22 +00:00
dan
a20fde64eb Experimental support for speeding up CREATE INDEX commands using an offline merge sort. 
FossilOrigin-Name: 30dbf0feab0323250404e0741ac2716bcb6b0cbe
 2011-07-12 14:28:05 +00:00
drh
8863f35f5c Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: 4c5e276c902e0b93cfc05bf2e1db966ecdac0ed0
 2011-06-20 10:44:10 +00:00
drh
124c0b49a1 Refactor the SQL parameter processing so that parameter names for values 
that are optimized out of the prepare statement are not forgotten.

FossilOrigin-Name: b3aaf715b60b8a338cc6c92dad1ead4a3f7146a3
 2011-06-01 18:15:55 +00:00
drh
22e9c155ae Merge in the latest changes from the trunk. 
FossilOrigin-Name: 435b57dc2be7b071270a6cddece297758b8153aa
 2011-04-06 22:33:50 +00:00
drh
dc5b047ec3 Fix a performance regression: Keep two btree masks in each prepared 
statement; one for btrees used and another for btrees that require locks.
Only try to lock the btrees identified by the second mask.

FossilOrigin-Name: 614de91a504d2231009a9de1305e31fce1b1c5a6
 2011-04-06 22:05:53 +00:00
drh
d7162fa64e Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: 45f20261720dcd73eb887f7e3df100723000418b
 2011-04-05 22:13:49 +00:00
drh
e54e051800 Remove the mutex counter and the logic that attempts to verify that btree 
mutexes are held continuously.  We are not making that assumption at this
time.

FossilOrigin-Name: 242ce7cff416a87d57d4eb624cb79fa4e2215559
 2011-04-05 17:31:56 +00:00
drh
b92fce1eae Merge the latest changes of trunk into the session branch. 
FossilOrigin-Name: 95d53c44320b9639f2623aa9cc88d0d3e1a3be8f
 2011-04-04 13:19:36 +00:00
drh
bdaec52c62 Remove the BtreeMutexArray object - use the Vdbe.btreeMask field to accomplish 
the same result.  Add a generation counter to btree mutexes in order to assert
that mutexes are never temporarily dropped over a range of instructions in order
to do deadlock avoidance in some subroutine.  Lock all btrees in any Vdbe
program that uses OP_ParseSchema.

FossilOrigin-Name: d81708f7d1eee399bfe76f6b8dac950a85dc2582
 2011-04-04 00:14:43 +00:00
drh
6412358526 Change the name of the "tAttachMask" datatype to "yDbMask". 
FossilOrigin-Name: 3d6f2e82358c0d8c0ca04e0da20b84fc65c3f7fa
 2011-04-02 20:01:02 +00:00
drh
9a48bf528d Merge in all the latest changes from the trunk, and especially the interface 
changes to the SystemCall methods of the VFS.

FossilOrigin-Name: 9c3a6e479988e96086bef00c79dbce508a14da0d
 2011-03-23 22:48:46 +00:00
drh
01c7dc887c Increase the upper bound on SQLITE_MAX_ATTACHED from 30 to 62. 
FossilOrigin-Name: 7aaf8772274422f5020fad9eea490e195170720f
 2011-03-23 18:22:34 +00:00
dan
319eeb7b33 Fix a problem with INTEGER PRIMARY KEY columns and the pre-update hook. 
FossilOrigin-Name: 24d4d5dd007197a141555bcca6f2ac9ab47cde80
 2011-03-19 08:38:50 +00:00
dan
37db03bf73 Add the sqlite3_preupdate_new() API, for retrieving the new.* values from within a pre-update callback. 
FossilOrigin-Name: 526545c49f64d9063d1b888cfc14ece62fa3c13c
 2011-03-16 19:59:18 +00:00
dan
4fccf43aae Add start of sessions feature. 
FossilOrigin-Name: 269a81a37d7dbdcdec3c2322074916af0fbac91c
 2011-03-08 19:22:50 +00:00
dan
46c47d4677 Add the experimental sqlite3_preupdate_hook() API. 
FossilOrigin-Name: 6145d7b89f83500318713779c60f79a7ab2098ba
 2011-03-01 18:42:07 +00:00
drh
2e5de2f2b3 Reorder the fields in private structures in an effort to reduce alignment 
gaps and thus make the structures smaller, and to put frequently accessed
fields first.  Also update some obsolete comments.  Valgrind shows a very
slight performance improvement.

FossilOrigin-Name: 378a1d13af4a6f4cb2bfa65944b3b0d444b9f21c
 2011-01-07 02:50:40 +00:00
dan
271065704c Avoid recursive calls to sqlite3VdbeMemRelease() when deleting VM frames used by trigger programs. 
FossilOrigin-Name: 119ffe955eb1e8016cb8131a63bd17557f395f3f
 2010-12-01 08:04:47 +00:00
drh
2b4ded993b Add assert() statements that fail when a shallow copy is accessed after the 
original has been modified.  These assert() statements should detect the kinds
of subtle SCopy bugs such as caused the fault
in ticket [b351d95f9cd5ef17e9d9dbae18f].

FossilOrigin-Name: 8b8e1732e8410efd5f8e308c43abe521584e87a0
 2010-09-27 21:09:31 +00:00
drh
d4187c716c Provide hints to the btree layer during the creation of transient tables 
when it is possible for those tables to use a hash rather than a binary tree.
No use is current made of those hints, though assert() statement verify
their accuracy.

FossilOrigin-Name: 4fead8e714c7e50a9d246467e62bc846ef6180a0
 2010-08-30 22:15:45 +00:00
dan
d19c933e8e Change the way SubProgram objects are deleted so that the code is the same for deletion and measurement. 
FossilOrigin-Name: 00e55102a8309eb6df08ad4a8937ba02688bac62
 2010-07-26 12:05:17 +00:00