database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-09 14:21:03 +03:00
Code Activity
7,134 Commits 1,607 Branches 185 Tags
1d452e1de04a1280cfed1ece64dae32dc8b204e7
Commit Graph

465 Commits

Author SHA1 Message Date
danielk1977
e2d7b24d08 Scan an index instead of a table for "SELECT count(*) FROM <tbl>" queries. Because an index is usually smaller than a table on disk, this saves some IO. (CVS 6315) 
FossilOrigin-Name: 294ba6f743c9132dce0e73da480bd3c2071e7239
 2009-02-23 17:33:49 +00:00
danielk1977
d336e222f4 Instead of using SetNumColumns, specify the number of columns in a table or index using the P4 argument. (CVS 6310) 
FossilOrigin-Name: e43ed649630cbc49a6f2a25a26a4a6b5fce84c48
 2009-02-20 10:58:41 +00:00
drh
08de14908d Add a count parameter to the OP_Variable opcode and use it to simplify 
prepared statements that copy consecutive unnamed parameters into
consecutive registers (a common case). (CVS 6309)

FossilOrigin-Name: 48b77b04935d8942eb22f0c061f3bc5e99bbd7db
 2009-02-20 03:55:05 +00:00
danielk1977
6ab3a2ec8a Changes to reduce the heap space consumed by triggers, views and tables in the in-memory representation of the schema. Also to reduce the space used by prepared statements slightly. (CVS 6305) 
FossilOrigin-Name: d9f6ffbc5ea090ba0daac571fc9a6c68b9c864e4
 2009-02-19 14:39:25 +00:00
shane
fbd60f826d Changes to completely remove all floating point ops if SQLITE_OMIT_FLOATING_POINT defined. Note that w/o fp, date/time, round, nan, etc. are all gone or limited in functionality. Updated some of the test scripts to support missing fp and 64-bit functionality. Ticket #3029. (CVS 6250) 
FossilOrigin-Name: 5cef400023205b55152b91441acc78f9cd8d58a9
 2009-02-04 03:59:25 +00:00
danielk1977
78ca0e7eb4 When not compiling for an EBCDIC system, use built-in alternatives to the tolowe 
r(), toupper() and other ctype.h library functions. Ticket #3597. (CVS 6196)

FossilOrigin-Name: 1041abd6784d283bebf646c54e93599522f7889d
 2009-01-20 16:53:39 +00:00
drh
d1fa7bca39 Remove some unused code from expr.c in order to increase test coverage. (CVS 6156) 
FossilOrigin-Name: 2cbea64fb00a1b5b8aa0e9c958b2a09256ae59bc
 2009-01-10 13:24:50 +00:00
drh
e99fa2af71 Convert the "~" and "NOT" operators to be two-address instructions. 
Ticket #3541. (CVS 6028)

FossilOrigin-Name: ea9b747efb22fd3f679c3ef86ed51986c5ad9436
 2008-12-15 15:27:51 +00:00
drh
1bd10f8a00 Additional work at eliminating silly compiler warnings. (CVS 6010) 
FossilOrigin-Name: ea01d43788a75e39c7f03c22681d1a338d52cf0e
 2008-12-10 21:19:56 +00:00
drh
555f8de7ef Fix a segfault associated with the column cache that occurs on nested VIEWs. 
Ticket #3527. (CVS 5989)

FossilOrigin-Name: 490138a2012fcb4c859e1cf12a35e314ec1060d2
 2008-12-08 13:42:36 +00:00
drh
6a1e071f3d Make use of sqlite3DbMallocSize to maximize the size of growable buffers 
after each reallocation.  Added new comments and testcase() macros to
where.c. (CVS 5981)

FossilOrigin-Name: 46f2d08959423e130a5b346138311649d92f0fde
 2008-12-05 15:24:15 +00:00
danielk1977
f3d3c27a0c Fix some compiler warnings that show up when building the amalgamation only. (CVS 5927) 
FossilOrigin-Name: d1abe8a1c9a990b02c71d6c249436381c9fde443
 2008-11-19 16:52:44 +00:00
danielk1977
62c14b3487 Changes to avoid "unused parameter" compiler warnings. (CVS 5921) 
FossilOrigin-Name: 88134322c36b41304aaeef99c39b4ef5b495ca3b
 2008-11-19 09:05:26 +00:00
danielk1977
259a455f71 Make sure affinities and implicit collation sequences are correctly used by comparison expressions in the select-list or having clause of an aggregate query. Ticket #3493. (CVS 5889) 
FossilOrigin-Name: b8ceaa00500f29bbbd0cc5aec71a6ffa91ae6b43
 2008-11-12 08:07:12 +00:00
drh
1735fa8892 Fix a bug in the CAST operator associated with the column cache. (CVS 5866) 
FossilOrigin-Name: 1b6a5140446da896f69fddc8d1ea076815bb45e3
 2008-11-06 15:33:03 +00:00
drh
31daa63f3e Disable the result-set alias cache when on conditional code branches. 
Ticket #3461.  The column cache and result set alias cache mechanisms are
prone to this kind of error and need to be refactored.  This check-in should
be considered a temporary fix in advance of a more general redesign of the
whole mechanism. (CVS 5841)

FossilOrigin-Name: 1fa3bbd8220ce073e91935ea362b6f5d5d6d2859
 2008-10-25 15:03:20 +00:00
drh
10fe840e4d Fix a memory leak on ORDER BY of a compound select caused by the resolver 
on a flattened query.  Also fix a OOM segfault in WHERE clause processing. (CVS 5801)

FossilOrigin-Name: d2c252d6bbde4ae14da6c9e6c2683d763d11c59f
 2008-10-11 16:47:35 +00:00
drh
e82f5d04c3 Raise the hard upper bound on SQLITE_MAX_FUNCTION_ARG to 1000 from 100. 
The default upper bound is still 100, but it can now be raised as high
as 1000 at compile-time. (CVS 5780)

FossilOrigin-Name: 79df72ee836db91647913055ba6cf55558679b01
 2008-10-07 19:53:14 +00:00
danielk1977
85574e31cb Allow INDEXED BY and NOT INDEXED clauses in SELECT statements. (CVS 5766) 
FossilOrigin-Name: 98ca5580f5acd2e7b3ce512520ec0527f221505e
 2008-10-06 05:32:18 +00:00
danielk1977
4e7f36a27f Change to reduce the number of OP_Null opcodes in "WHERE <rowid> IN (x,y,z)" queries. (CVS 5763) 
FossilOrigin-Name: 33b59a3db0b1797663ae840ceaca1b23a9a9e3b0
 2008-10-02 16:42:06 +00:00
danielk1977
41a05b7bee Optimize queries that contain "WHERE rowid IN (x, y, z...)" by using an intkey btree to store the (x, y, z...) set instead of an index btree. (CVS 5760) 
FossilOrigin-Name: 803a1736d56b3c07b8ad38715fe0e39196ecc507
 2008-10-02 13:50:55 +00:00
drh
d176611b44 Fix for tickets #3378 and #3381 that preserves the aliasing optimization. 
And yet, this fix feels uncomfortable.  Seeking an alternative... (CVS 5712)

FossilOrigin-Name: f8b759f1977915c314be874840ebf18e6bc69b57
 2008-09-17 00:13:12 +00:00
drh
f44ed02790 Add test cases for ticket #3378 and #3381. Add a temporary hack to get those 
to problems fixed.  The hack causes failures in alias.test, but those are much
less serious than the aforementioned tickets.  This is a stop-gap until we can
figure out a proper fix. (CVS 5711)

FossilOrigin-Name: a67da9dd2ff6acc163de4ce2b836b03e3f159a88
 2008-09-16 18:02:47 +00:00
drh
8b213899e8 Avoid reevaluating WHERE and ORDER BY expressions that alias terms in the 
result set.  Ticket #3343.  Note that aliased GROUP BY expressions are still
evaluated twice. (CVS 5637)

FossilOrigin-Name: ab0292caa5887cc1bdc0e8c9d3f3502b83975440
 2008-08-29 02:14:02 +00:00
drh
ee76c61657 Remove dead code. (CVS 5601) 
FossilOrigin-Name: 6de9c084fc533fbb22af6a4cd3e4e9a461b13876
 2008-08-22 17:34:45 +00:00
drh
9d8b3072ce Enhanced test coverage. (CVS 5598) 
FossilOrigin-Name: cc36b4e016a1f519ca81d591de3a551ee8aa6813
 2008-08-22 16:29:51 +00:00
drh
7d10d5a6e1 Refactor the name resolution procedures in the code generator. (CVS 5569) 
FossilOrigin-Name: daf730d1defa78fb8b80a78f9108ac35a13e09f6
 2008-08-20 16:35:10 +00:00
drh
a33cb5f776 Improved clarity of presentation in the tokenizer. (CVS 5545) 
FossilOrigin-Name: 732657c6a639bdf71a3341f6747d19298d442ddb
 2008-08-07 13:05:34 +00:00
drh
633e6d57d9 Implement the "lookaside" memory allocation cache. Use of this cache makes 
the speed1.test script run about 15% faster.  Added new interfaces to
control the cache. (CVS 5488)

FossilOrigin-Name: e48f9697e9fea339e150ddc32940760027dd07d9
 2008-07-28 19:34:53 +00:00
drh
e54a62ad85 Make sure expression spans are set correctly for "x.*" expressions in 
the result set of a SELECT.  Ticket #3229. (CVS 5438)

FossilOrigin-Name: 17a9984e7668be388c4042c070718a02b284a336
 2008-07-18 17:03:52 +00:00
drh
e49b146f30 Additional test coverage in select.c and expr.c. (CVS 5381) 
FossilOrigin-Name: c6cf08477cc4d622a05ad6706cb9418cf7eea432
 2008-07-09 01:39:44 +00:00
drh
a9671a22b3 Remove obsolete code from select.c, including the "affinity" parameter 
to the sqlite3Select() module. (CVS 5380)

FossilOrigin-Name: cbd3c1585b7a8f8042aa1448fe1be87de056c41a
 2008-07-08 23:40:20 +00:00
danielk1977
2f425f6b64 Remove redundant code from sqlite3GetTempReg(). (CVS 5342) 
FossilOrigin-Name: 212d05d38c8126f99c028c5ab021b219487fa01e
 2008-07-04 09:41:39 +00:00
danielk1977
a7d8b85980 Remove references to temporary registers from the compiler column-cache when such registers are released. Fix for #3201. (CVS 5341) 
FossilOrigin-Name: f099d6773a837dbe4ba85a8fda818e2d9466e743
 2008-07-04 09:15:11 +00:00
drh
6fccc35a91 Remove unused variable. Fix a compiler warning. (CVS 5319) 
FossilOrigin-Name: 0b01ec5cf7725a02d4c12167df125cef578f6219
 2008-06-27 00:52:45 +00:00
drh
66ba23ce86 Tweaks to the IN expression code generator. Fix an an unrelated bug 
in the compound SELECT code generator. (CVS 5318)

FossilOrigin-Name: a4005782690f022e982df4873779a029b28b9306
 2008-06-27 00:47:28 +00:00
drh
3c31fc23b1 Fix a bug introduced by check-in (5316). Add some VDBE comments to 
the IN expression code generator. (CVS 5317)

FossilOrigin-Name: 1043a605e2dcad4b5222674efe392ee9915dc57d
 2008-06-26 21:45:26 +00:00
drh
ecc31805da Avoid generating unnecessary SCopy instructions with the RHS of an IN 
operator is a list of values. (CVS 5316)

FossilOrigin-Name: ec80474b1c157a29fb6978dd5575c396c57973b3
 2008-06-26 20:06:06 +00:00
danielk1977
0cdc022e88 Fix handling of "x IN (...)" and "x NOT IN (...)" expressions when the set contains an SQL NULL value. (CVS 5314) 
FossilOrigin-Name: d45a97be71fa61ab4a692bd807ab762130f7f5b9
 2008-06-26 18:04:03 +00:00
drh
f6e369a119 Fix a problem in sqlite3ExprIsInteger() causing failures on select1-4.9.2. 
Other bug fixes in compound-merge.  The compound-merge is still disabled
in this check-in using "#if 0" due to additional bugs. (CVS 5295)

FossilOrigin-Name: 95037e6dbf4ed0ffd38790f3270dcaa4c1ae64ed
 2008-06-24 12:46:30 +00:00
drh
92b01d53c2 The compound-select merge optimization is mostly working with this check-in. 
But there are still a few problems and so the optimization is disabled by
and "#if 0".  This check-in is to synchronize with the other changes happening
in parallel. (CVS 5291)

FossilOrigin-Name: e2ba324cbcac0ba35bbde50048677e085abb092b
 2008-06-24 00:32:35 +00:00
drh
b21e7c70f7 Fix a bug in the KEYINFO handling within select.c. Change the OP_Move 
opcode to take a count and to move multiple registers.  Initial code for
the compound-select merge optimization is added but is incomplete
and is commented out. (CVS 5272)

FossilOrigin-Name: 663a590e3086145a57af7569d8f798b6b6a8b76c
 2008-06-22 12:37:57 +00:00
danielk1977
4b5255ac31 Reorganize some of the code that detects expression trees with a depth greater than EXPR_MAX_DEPTH so that they are detected earlier. This further reduces the opportunities for stack overflow. (CVS 5189) 
FossilOrigin-Name: 16d4c53a8e4d3cfc1abac3b8bb44d8bfd9471e32
 2008-06-05 16:47:39 +00:00
drh
0224d26d37 Allow the SQLITE_MAX_EXPR_DEPTH compile-time parameter to be set to 0 in 
order to disable expression depth checking.  Ticket #3143. (CVS 5166)

FossilOrigin-Name: 5ceef40e397fc535173996404345b93f695e8cac
 2008-05-28 13:49:34 +00:00
drh
26e4a8b11d Fix more compiler warnings. (CVS 5074) 
FossilOrigin-Name: 59568844e774dbe89fd20bbc8f49a3665cc54717
 2008-05-01 17:16:52 +00:00
drh
2eaf93d34f Always convert IEEE NaN into NULL. Ticket #3060. Add test cases to verify 
that this is happening. (CVS 5066)

FossilOrigin-Name: 9b07e59e510e2de39c2081653662fbc654ca6fbb
 2008-04-29 00:15:20 +00:00
drh
b287f4b646 Candidate fix for ticket #3082. Test cases needed. (CVS 5047) 
FossilOrigin-Name: f6313311ddfb1ee2d6660b9be99afe721a8a9aff
 2008-04-25 00:08:38 +00:00
danielk1977
d7eb2ed5cd Fix a crash that can follow a malloc() failure in malloc7.test. (CVS 5042) 
FossilOrigin-Name: 85eedad186327a1f0b0983413b833efd41640d0e
 2008-04-24 12:36:35 +00:00
drh
191b54cb5d Fix a code generator bug caused by the new CSE optimization. Add test cases 
to prevent a recurrence. (CVS 5011)

FossilOrigin-Name: d04246a46399e839e70b1bd57e209f80143f0d5b
 2008-04-15 12:14:21 +00:00
drh
5c070538f1 Additional reductions in the use of memset(). (CVS 4988) 
FossilOrigin-Name: 38746c54385e3cb456cda660ea50769b5424db30
 2008-04-11 15:36:03 +00:00