database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-08 14:02:16 +03:00
Code Activity
30,215 Commits 1,570 Branches 184 Tags
tcl-init
Commit Graph

2168 Commits

Author SHA1 Message Date
drh
6cf4a7dfa6 Remove the OPFLAG_CLEARCACHE flag from OP_Column. In its place, change the 
P3 parameter of OP_SorterData to be the index of the pseudo-table cursor whose
record header cache is to be cleared.  This gives a small size reduction
and performance increase.

FossilOrigin-Name: 20062f49428a2349a2dd705af570c60b499a3eef
 2014-10-13 13:00:58 +00:00
drh
b53a5a9e50 Remove the VdbeCursor.lastRowid cache of the current rowid, since maintaining 
the correct cache value uses more CPU cycles than just recomputing the rowid
on the occasions when it is actually needed.  Replace it with the
VdbeCursor.aOffset field which used to be computed from VdbeCursor.aType
when needed. Saves 100 bytes of code space and runs 0.2% faster.

FossilOrigin-Name: 91384a7d727ef0f285cd430e829ba9f3852db50e
 2014-10-12 22:37:22 +00:00
drh
c81aa2e120 Performance optimization and very slight size reduction for OP_Column. 
FossilOrigin-Name: 869c30e45cc87063be423c650f16b99e8adb3df0
 2014-10-11 23:31:52 +00:00
drh
78aad7cd1d Merge all recent trunk changes. 
FossilOrigin-Name: abfef254721ca29b653f24bfe80e88adaa92dc6c
 2014-10-10 12:56:35 +00:00
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
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
6382b6dc71 Merge recent trunk changes (performance enhancements) into the sessions 
branch.

FossilOrigin-Name: 497367cb57345dd37793e5f369b34d12be56172e
 2014-09-27 19:51:50 +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
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
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
6b011d83b4 Merge all recent trunk changes into the sessions branch. 
FossilOrigin-Name: 6406b77f2c447751a2fbb16f01c61cdcfd6af59e
 2014-09-21 22:49:20 +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
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
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
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
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
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
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
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
a4a8a3c22e Merge support for large files on Android from trunk. 
FossilOrigin-Name: c2885c6bb24cc55178467e57e77bf71df58b3b13
 2014-09-08 15:04:24 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
bf9ed6f9af Merge the latest trunk changes, including the multi-threaded sorter, into 
the sessions branch.

FossilOrigin-Name: d4cce2c71e64ab7b6a65a81b88b69445ed859351
 2014-09-02 15:49:47 +00:00
drh
503ae86508 Merge recent performance enhancements from trunk onto the threads branch. 
FossilOrigin-Name: 35c44a3c73e2e8b14ff194c41986f4bdb9dfe737
 2014-08-29 14:40:07 +00:00
mistachkin
a1dc42aa91 Add a VDBE synopsis comment for clarification. 
FossilOrigin-Name: 029a6dc744c24e7be482298c678af8a115d6a87b
 2014-08-27 17:53:40 +00:00
drh
9bd038f12e In the sqlite3_context object, keep a pointer to the result value rather 
than storing the result value in the sqlite3_context object and using
memcpy() to move the value back into its register
after the function returns.  This runs faster and saves over 500 bytes
of code space.

FossilOrigin-Name: 6c1ee3e388eb110de815270467b1e50592c0ba6c
 2014-08-27 14:14:06 +00:00
drh
e1ed0b0e17 Merge recent performance enhancements and the CAST operator enhancements 
into the sessions branch.

FossilOrigin-Name: 08ae974ac80fabe53f515bbbd93ccf55de8ee671
 2014-08-26 02:15:07 +00:00
drh
6c4ec84256 Merge the CAST operator enhancements from trunk. 
FossilOrigin-Name: 6c8f86e4e08d5d57e21496277613e0f9dcc06514
 2014-08-25 22:43:17 +00:00
drh
05bbb2e824 Add an assert() and five testcase() macros to the OP_Cast opcode implementation 
to help verify that it is fully tested.

FossilOrigin-Name: af364cce9da0961593ef876b646197f82df08ad5
 2014-08-25 22:37:19 +00:00
drh
4169e430a2 Allow CAST expressions and unary "+" operators to be used in the DEFAULT 
argument of an ALTER TABLE ADD COLUMN and to be understand on the RHS of
range constraints interpreted by STAT3/4.  This involves a rewrite of the
implementation of the CAST operator.

FossilOrigin-Name: 91d8a8d0b792ea5c4fe68fd9caaf3345eddea486
 2014-08-25 20:11:52 +00:00
drh
4d015c6902 Merge the recent performance enhancements implemented on trunk into the 
threads branch.

FossilOrigin-Name: dfdc900f5d1a31ee5c5f35a630c4a8253e69093b
 2014-08-25 13:27:02 +00:00
drh
12b7c7d8c3 Change the name of the VdbeMemRelease() macro to VdbeMemReleaseExtern() to 
more accurately reflect what it does.  Performance enhancement to the
sqlite3VdbeMemRelease() function.

FossilOrigin-Name: 3ca5846da7da5e08192a4c96288197be3b7ab6f7
 2014-08-25 11:20:27 +00:00
drh
f1a89ede4a Improved performance in the type handling of arithmetic operators in the VDBE. 
FossilOrigin-Name: 0c0a603950c97837442d82886f947aab0acbd805
 2014-08-23 17:41:15 +00:00
drh
bd9507c8da Performance optimization in the applyAffinity() logic inside the VDBE. 
FossilOrigin-Name: 25f2246be404f38b4f8dd70397cd1454d46358c4
 2014-08-23 17:21:37 +00:00
drh
f3a3dfe9f1 Update the sessions branch for version 3.8.6. 
FossilOrigin-Name: 2acbeac1fd9b9feb26e1c24d4ae50ce79f17a3f8
 2014-08-15 15:10:46 +00:00
drh
83b25d32d7 Merge the pre-3.8.6 changes into the threads branch. 
FossilOrigin-Name: a608fd1d52606a009c3acc7f1d184b86a7df3c82
 2014-08-14 14:02:48 +00:00
drh
4ed2fb9d84 Fix typos in comments used to help generate documentation. No changes to code. 
FossilOrigin-Name: 13a2d90a2869c53b79754de39045bbbdbc7688e3
 2014-08-14 13:06:25 +00:00
drh
d0738004ca Merge the trunk changes for 3.8.6 beta3 into the sessions branch. 
FossilOrigin-Name: d49455d9a972fc2224d9beb97165a998ca56e838
 2014-08-13 14:43:32 +00:00
drh
e8f2c9dc71 Fix two more harmless compiler warnings. Make sure the fts3_unicode2.c file 
is in sync with mkunicode.tcl.

FossilOrigin-Name: a2a60307ea68a3230952a56cb65369ba0a208967
 2014-08-06 17:49:13 +00:00
drh
da2e5862d1 Merge all recent changes from trunk. 
FossilOrigin-Name: a353a8515fb2eff86042d0c33e39772f4d04e0b3
 2014-08-06 02:03:35 +00:00
drh
58c4cbe152 Merge the latest 3.8.6 beta changes from trunk. 
FossilOrigin-Name: 68a6d5e2f43702c78057ae2f2a7345c981d24e17
 2014-08-06 01:25:47 +00:00