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272 Commits

Author SHA1 Message Date
drh
ca83ac51b3 Allow up to 64 tables in a join (the number of bits in a long long int). 
The old limit was 32 tables. (CVS 3622)

FossilOrigin-Name: 505dce8f4e8717341e04f49f6f382719c3c704f1
 2007-02-01 01:40:44 +00:00
drh
89c69d00bd Fix for ticket #2141. (CVS 3552) 
FossilOrigin-Name: 70f5f3b85f30bbec0ddc59ba364e1229c09ed636
 2007-01-04 01:20:28 +00:00
drh
61dfc31d80 Query optimizer enhancement: In "FROM a,b,c left join d" allow the C table 
to be reordered with A and B.  This used to be the case but the capability
was removed by (3203) and (3052) in response to ticket #1652.  This change
restores the capability. (CVS 3529)

FossilOrigin-Name: 7393c81b8cb9d4344ae744de9eabcb3af64f1db8
 2006-12-16 16:25:15 +00:00
drh
2fca7fef28 Fix a typo in the OMIT_AUTORIZATION in expr.c. (CVS 3518) 
FossilOrigin-Name: 3dea7fbefdadb269e58ae76bb9a7281c96d8b15b
 2006-11-23 11:59:13 +00:00
drh
b8b1421963 Documentation updates for the new SQLITE_FUNCTION authorization. (CVS 3366) 
FossilOrigin-Name: e029637e54e190c89206725a99e1ee7db6c23804
 2006-08-24 15:18:25 +00:00
drh
5169bbc6a3 Enhance the sqlite3_set_authorizer() callback so that it provides callbacks 
on each SQL function that is invoked. (CVS 3365)

FossilOrigin-Name: 4547c81f7da29b1490c6eba8d9c333218c5cb88f
 2006-08-24 14:59:45 +00:00
drh
206f3d96d1 Prevent memory leak and possible NULL pointer deference after malloc 
failure.  Ticket #1886. (CVS 3329)

FossilOrigin-Name: b1f326e6959ef3be11f772e80f5ab6dd65b2d065
 2006-07-11 13:15:08 +00:00
drh
a43fa22771 Better comment to describe the confusing operand reversal for infix 
functions. (CVS 3325)

FossilOrigin-Name: 30dfb9bf2131370fe57e000495f5c292d392a010
 2006-07-08 18:41:37 +00:00
drh
6a03a1c5f7 For infix functions (LIKE, GLOB, REGEXP, and MATCH) treat the left 
operand as the first argument for the purposes of virtual table
function overloading, even though the left operand is really the
the second argument. (CVS 3324)

FossilOrigin-Name: 6e98373ca11c9d476f4c6b1841c6e006b7a49f29
 2006-07-08 18:34:59 +00:00
drh
b7f6f68f3a Allow virtual table implementations to overload function that use 
a column of the virtual table as their first argument.  Untested. (CVS 3322)

FossilOrigin-Name: 12cc7af4b6b8b4f1a43d962fbafde8cba683a907
 2006-07-08 17:06:43 +00:00
drh
4cbdda9e27 Added code to INSERT, DELETE and UPDATE virtual tables. The new code is 
mostly untested. (CVS 3248)

FossilOrigin-Name: 32c97b884b104d120db3c0a87f5eab28f36851f8
 2006-06-14 19:00:20 +00:00
danielk1977
7dabaa126a Bugfixes: Fix a segfault introduced as part of the new vtab code, deallocate memory in the Destroy() method of the echo module. (CVS 3221) 
FossilOrigin-Name: f9ea9704755eee3fd29af7a47be1d41620be8835
 2006-06-13 04:11:43 +00:00
drh
a967e88645 Progress toward getting the virtual-table code generator to work. (CVS 3220) 
FossilOrigin-Name: 3532f1340f939b0231c1d82a7b2d186cb096fb29
 2006-06-13 01:04:52 +00:00
drh
b9bb7c187e Progress toward CREATE VIRTUAL TABLE. Still not even close to working... (CVS 3211) 
FossilOrigin-Name: 898ec36b4102aaa03979f8f5c510936e57e2ae48
 2006-06-11 23:41:55 +00:00
drh
8159a35f46 Fix type coercion rules for the IN operator. Ticket #1821. (CVS 3188) 
FossilOrigin-Name: 6e5a49762166a942e1b2c3beae8a30c07187eb10
 2006-05-23 23:22:29 +00:00
drh
f8875400e4 Miscellaneous code cleanup. (CVS 3143) 
FossilOrigin-Name: 8f60139f688903f0e635b0a904ab9ca401fbe71f
 2006-03-17 13:56:34 +00:00
drh
43617e9ab9 Code changes resulting from Coverity analysis. 
http://scan.coverity.com/  Found 1 potential segfault in sqlite3_mprintf().
Also 2 failures to fclose() following a malloc() failure.  And lots of
cases where unnecessary conditionals could be removed from the code. (CVS 3126)

FossilOrigin-Name: e510e6dd9d6261f33b853af3b32d155b9d6b63b3
 2006-03-06 20:55:46 +00:00
drh
41714d6f83 Allow WHERE clause terms on the left table of a LEFT OUTER JOIN to 
contain aggregate subqueries.  Ticket #1697. (CVS 3117)

FossilOrigin-Name: a286e54e26f9a364127649eeea160d5fa8928faf
 2006-03-02 04:44:23 +00:00
danielk1977
1787ccabed Fix the origin APIs so that they correctly handle views and subqueries that cannot be flattened. (CVS 3072) 
FossilOrigin-Name: 5e8611e13de08d704cea6c9c4466c3af842a7a1a
 2006-02-10 07:07:14 +00:00
drh
afa5f68091 Fix bug with CHECK constraints contain an IN operator. Ticket #1645. (CVS 3035) 
FossilOrigin-Name: 944df310ce8d32798135c70becee7845676520ae
 2006-01-30 14:36:59 +00:00
danielk1977
f011300000 Rename some variables to avoid hiding others. Also add "static" to two function signatures that were missing it. (CVS 3024) 
FossilOrigin-Name: d86f18a4277ebffb644ba2e574e0b697c8bbf8e4
 2006-01-24 12:09:17 +00:00
danielk1977
4b202ae2a5 Improve coverage of expr.c and btree.c slightly. (CVS 2992) 
FossilOrigin-Name: cc2e8e87cfd474b4dc6833ee0c38e2cd2dd3a494
 2006-01-23 05:50:58 +00:00
danielk1977
9e12800dec Use a global variable protected by a mutex instead of thread-specific-data to record malloc() failures. (CVS 2972) 
FossilOrigin-Name: ac090f2ab3b5a792c2fdf897e10060f263e0d408
 2006-01-18 16:51:35 +00:00
danielk1977
e725929686 Minor modification to restoreOrClearCursorPosition() to improve efficiency. Do not allocate the extra 8-bytes if memory-management is not enabled. (CVS 2936) 
FossilOrigin-Name: dd705955429d847af85ffaf248976bcd1d861852
 2006-01-13 06:33:23 +00:00
drh
6f7adc8a80 Automatically deallocate thread-specific data when it is no longer 
being used.  Ticket #1601.  Also implemented the suggestion of
ticket #1603. Memory management is now off by default at compile-time.
The sqlite3_enable_memory_management() API has been removed. (CVS 2919)

FossilOrigin-Name: 5d9c6aa964305c3f36741ff0058da5b5f3ce0d24
 2006-01-11 21:41:20 +00:00
danielk1977
b3bf556ef6 Store collation sequence names instead of pointers in sharable schema data structures. (CVS 2904) 
FossilOrigin-Name: 0f0213be4d064b3d24e31ff93ec16f6862003d26
 2006-01-10 17:58:23 +00:00
danielk1977
14db26653a Fix some errors to do with attached databases and text encodings in shared-cache mode. (CVS 2895) 
FossilOrigin-Name: 3e75d3d5efebc0dfff1adfc13d85e85ec39db3eb
 2006-01-09 16:12:04 +00:00
danielk1977
e501b89ada Rename DbSchema to "Schema" and SqliteTsd to "ThreadData". (CVS 2893) 
FossilOrigin-Name: 82b81f69c78cb3f54634d9aea4f6a838474dc5e5
 2006-01-09 06:29:47 +00:00
danielk1977
da18423620 Add the shared schema/pager modifications. Very few tests so far. (CVS 2859) 
FossilOrigin-Name: deeda0dc06c1595aedd8d06a0c4e88a8abf78cf7
 2006-01-05 11:34:32 +00:00
drh
f93339decb Always case 0 to (char*) on varargs functions. Otherwise there are problems 
on 64-bit machines. (CVS 2854)

FossilOrigin-Name: 837dc77ff9f5271b7e1bb8602fc021670c7802d1
 2006-01-03 15:16:26 +00:00
drh
2646da7e52 Clean up annoying (and pointless) compiler warnings about differing signedness. (CVS 2810) 
FossilOrigin-Name: 83a59151559d9496d4f546e03e65087ea974717d
 2005-12-09 20:02:05 +00:00
danielk1977
261919cc16 Some elements of the new malloc() failure handling. Not all cases work properly yet. Also, library is not threadsafe if malloc() fails right now. (CVS 2800) 
FossilOrigin-Name: e1606658f1b4530e3001db4779b5669c8d13c853
 2005-12-06 12:52:59 +00:00
drh
9cbe635219 Make the OsFile structure opaque with its internal structure known only to 
the appropriate os_*.c implementation.  Omit the os_unix.h and os_win.h
include files.  The crash tests are broken by this patch. (CVS 2791)

FossilOrigin-Name: 058f31753871b16b40fe4048e3adcee411e0f87d
 2005-11-29 03:13:21 +00:00
drh
9267bdcecd Replace a call to sprintf() with sqlite3MPrintf() since on some embedded 
platforms, sprintf() is busted.  Need to go through and do similar replacements
elsewhere in the code. (CVS 2790)

FossilOrigin-Name: 1b4f2d89bbe833359cefcea580783fd92aa7b8ab
 2005-11-28 12:36:35 +00:00
drh
7e56e71125 Do not allow aggregate functions in a WHERE clause. Ticket #1514. (CVS 2769) 
FossilOrigin-Name: bb866ed880c33ec9ce6ded8ebdbb459fedf9c257
 2005-11-16 12:53:15 +00:00
drh
8a51256c0c Create separate affinities for INTEGER and REAL. (CVS 2766) 
FossilOrigin-Name: ce06c123d0c5663dbaf263c2e0aaf5d9cdeb2ccd
 2005-11-14 22:29:05 +00:00
drh
8a9f38feb2 Remove a C++-ism that slipped into the code during the recent CHECK 
enhancements.  Ticket #1513. (CVS 2762)

FossilOrigin-Name: e66289b52f56c8242aa264a9365c834cd820e988
 2005-11-05 15:07:55 +00:00
drh
4284fb0778 Prohibit parameters in CHECK constraint expressions. (CVS 2758) 
FossilOrigin-Name: bb94ef64b227839a0ef4156985e2f5a061a78e2c
 2005-11-03 12:33:28 +00:00
drh
06f6541e2f Disallow subqueries in CHECK constraints. (CVS 2756) 
FossilOrigin-Name: db27afc4cdc5b51c1fa0e83dbd6d4a4a69c5b642
 2005-11-03 02:03:13 +00:00
drh
ffe07b2dc1 First cut at supporting CHECK constraints. Everything appears to work, 
but much more testing is needed as well as documentation. (CVS 2754)

FossilOrigin-Name: 2313d912baeca0fd516d524f16708953de483729
 2005-11-03 00:41:17 +00:00
drh
8df447f0e6 Omit the SQLITE_AFF_INTEGER type affinity. All numeric values are now 
of type real, though an integer representation is still sometimes used
internally for efficiency. (CVS 2753)

FossilOrigin-Name: e0d6f61c7de2c03b8fd17ef37cf1a0add36ee618
 2005-11-01 15:48:24 +00:00
drh
ec7429ae27 More efficient handling of the LIMIT clause. Scalar subqueries and EXISTS 
on compound SELECT statements now working properly.  Ticket #1473. (CVS 2747)

FossilOrigin-Name: edca8913ca012fc0c17343a27f819de95147b1bd
 2005-10-06 16:53:14 +00:00
drh
8e647b8191 Fix an uninitialized structure member that was causing a malfunction when 
you used deeply nested and very complex views.  Ticket #1449. (CVS 2733)

FossilOrigin-Name: 352cc9f53b7724621ecbf3a6362f34c31a18cce8
 2005-09-23 21:11:53 +00:00
drh
d654be803f Code cleanup and simplification. Three new Mem opcodes added. 
The sqlite3VdbeJumpHere function added. (CVS 2730)

FossilOrigin-Name: 2471957feee57538e5e1e50a704a337f0927d10e
 2005-09-20 17:42:23 +00:00
drh
53f733c7ae Fix a whole host of newly discovered memory leaks the occur after a 
failure of realloc(). (CVS 2696)

FossilOrigin-Name: 4686d649756a0aa301ade901ac49c89a976c5402
 2005-09-16 02:38:09 +00:00
drh
fd35797469 Infrastructure for the DISTINCT keyword in aggregate functions. But it does 
not work yet.  If you try to use it you get an error message. (CVS 2680)

FossilOrigin-Name: 4d62e36fe3819c2a1412737c2ec8a91ddc5e1777
 2005-09-09 01:33:19 +00:00
drh
5774b80629 More bug fixes. But there are still tests that fail. (CVS 2664) 
FossilOrigin-Name: 7e85a162d0ecf0acdbffcacc62b60d97fe123881
 2005-09-07 22:48:16 +00:00
drh
13449892ef Rewrite the aggregate handling logic so that it runs in O(1) space. 
This is the first cut at the code.  Many regression tests fail. (CVS 2662)

FossilOrigin-Name: 17039ec3ff4396862beedf4a8af89654b2140f58
 2005-09-07 21:22:45 +00:00
drh
d81bd4e209 Fix bugs introduced by checkin (2656) and do some modest code enhancements. (CVS 2657) 
FossilOrigin-Name: 7b56763a8b514834198d2392639d6d726b17d901
 2005-09-05 20:06:49 +00:00
drh
0342b1f542 Sorting is now done using a sorting index rather than loading the entire 
result set into memory and doing a merge sort.  The old merge sort technique
was a carry-over from SQLite version 1.  The new method uses a bounded amount
of memory and scales to much larger result sets.  There are still errors:
some 39 regression tests fail. (CVS 2653)

FossilOrigin-Name: 09db0a24241f9248584250d1728117b8a3159626
 2005-09-01 03:07:44 +00:00