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Author SHA1 Message Date
drh
f2cf412a0a Fix a harmless compiler warning in fuzzcheck. Add new OSSFuzz test cases 
to the test case library.

FossilOrigin-Name: d2619746cb233f4be127a77988548dd1d90eebddf0d0ac9107913b240553e5d0
 2018-05-08 13:03:31 +00:00
drh
5ecf9039b0 Fuzz test cases for UPSERT. 
FossilOrigin-Name: fd11fbd21893d520de5a2249f825ecb5839fa4943f5c207e9e9bf8b52f4e2695
 2018-05-08 12:49:53 +00:00
drh
89ee229810 Activate the cell-overwrite optimization for index b-trees. 
FossilOrigin-Name: a68697d10ef17d452c8279181186faad7bc54e3a35858a336552f717449065ea
 2018-05-07 18:41:19 +00:00
drh
d720d394d0 Improved comments on the cell-overwrite optimization code. 
FossilOrigin-Name: a4fe966da2fc479b18bf521ff596000410af3a611f7d8723d126795e595ccf22
 2018-05-07 17:27:04 +00:00
drh
e3c05a5597 On an UPDATE, try to overwrite an existing btree cell with the modified 
content, if the old and new cell are the same size.  Use memcmp() first
to avoid dirtying pages that are unchanged.

FossilOrigin-Name: 5887d8beb502ad62689d31b850f46ab50831a1e9db36adf20d55ad45619d207e
 2018-05-07 11:48:22 +00:00
drh
e2188f0b0f Fix harmless compiler warnings associated with the new EXPLAIN QUERY PLAN logic. 
FossilOrigin-Name: 374d8e264487b0437a8d995ced1bc026a92d495a2d0568f65f033e9ebe11d0e2
 2018-05-07 11:37:34 +00:00
drh
30f7a25325 Fix harmless compiler warnings in the cell-overwrite logic. 
FossilOrigin-Name: 3e11dc3183bc3e8ec49af244a8e8b3e07d12f7a2e59028b2bf64ce0ab589a91f
 2018-05-07 11:29:59 +00:00
drh
60208c34bb Backout change [05fee1a21ea398f1e4d6f1cf3] because it does not take into 
account the LD_LIBRARY_PATH environment variable used by dl_open().

FossilOrigin-Name: b348d1193a7a3ed4d3e656b6cc95a41f87eae29222e0723850a5eb5ffabffd00
 2018-05-07 02:50:38 +00:00
drh
c6f36fa33a In an ORDER BY LIMIT, make sure the ORDER BY expression evaluator does not 
try to reuse values from the result set if the result set has not yet
be computed.  This fixes a bug in the recent deferred-row loading 
optimization, check-in [c381f0ea57002a264fd958b28e].
OSSFuzz discovered the problem.

FossilOrigin-Name: 5d61e75f32de09c81dbe844443209f063cccb005d60b846900de5b023643fc3b
 2018-05-05 16:50:35 +00:00
drh
6fcf83a503 Fix a slightly incorrect corruption detection branch in the btree logic. 
FossilOrigin-Name: 9191ff670cb7f36e0b2dac4a22888679b639845687aef8edcc3c05e35ba71eda
 2018-05-05 01:23:28 +00:00
drh
cb737dc29e Merge enhancements from trunk. 
FossilOrigin-Name: 9650f71b82ca1b3759e776bbd8a2e8ca61c51f80038e37c9c9a675a8c13b0b06
 2018-05-04 19:18:27 +00:00
drh
e3d511c078 Fix requirements marks. No code changes. 
FossilOrigin-Name: 7fdad122a21e4b01bd678198fd5131dc32febe3af366bd6368505398255f9822
 2018-05-04 18:32:11 +00:00
drh
e632ae796a For the amalgamation-tarball, enable FTS5 and JSON1 by default and 
provide a new --enable-debug option that actives debugging facilities.

FossilOrigin-Name: 03edecaf9dcfc927aa60c2a17590a432b17de1647d480d277b4aafc8018c2d20
 2018-05-04 04:49:55 +00:00
drh
5d72d9245d Make a separate limb in the EXPLAIN QUERY PLAN output for the various lines 
associated with the OR-optimization.

FossilOrigin-Name: 75ac7b4e4fd0811ca80c719badacff207e0bbd00ac64dde3b3d4ec676fad472d
 2018-05-04 00:39:43 +00:00
drh
4388522561 In ORDER BY LIMIT queries, try to evaluate the ORDER BY terms first, and it 
it becomes clear that the row will not come in under the LIMIT, then skip
evaluation of the other columns.

FossilOrigin-Name: c381f0ea57002a264fd958b28e4921cb9c9e73a10fb592f6bb64e6bc9bd16d39
 2018-05-03 23:20:06 +00:00
drh
5e8b9853da Fix a branch that has become unreachable due to recent enhancements. 
FossilOrigin-Name: 81ab5e0d106fb9f2de80d17c8167d8542c6721b8d7ec69c43e1571c2dcadeddd
 2018-05-03 22:52:56 +00:00
drh
34b27edc80 Improved security for VACUUM. This check-in combines the fixes 
of [ab0d99d0b5ede] and [27754b74ddf646] in a way that is less likely to
to be broken by future changes.

FossilOrigin-Name: 260fc696538b195e8decabaab46771f664fb829b539efa86fb0b8170db01fa0a
 2018-05-03 21:51:30 +00:00
drh
98b677f2cb Overhaul of EXPLAIN QUERY PLAN. The output is now in the form of a tree. 
More details of the query plan are shown, and what is shown is truer to what
actually happens.

FossilOrigin-Name: ff01bbdabc4b9db3db8b928979442c91b32d72082158e4f5fe62ae51a73649d2
 2018-05-03 19:56:50 +00:00
drh
4d79983ca5 Optimizations to the new EQP framework. 
FossilOrigin-Name: 956fef361a795bd081d8e23ce4075dc8aafcee63ab7275d13b657b529d185b30
 2018-05-03 19:47:14 +00:00
drh
d5aa9262a6 Fix various error handling conditions on the cell overwrite optimization. 
Fix a test case so that it works with the new optimization.

FossilOrigin-Name: f89b54f41405ed7e28132f66b8a0c690a087c2412c8f55790c2beabb0b521645
 2018-05-03 16:56:06 +00:00
drh
da65fc6e32 The BtCursor.info fields are only valid if info.nSize!=0. 
FossilOrigin-Name: 54c537eead5b08104cfaf0d5b1e2706e53d6f74be2ca02e06229024fd889fc94
 2018-05-03 14:07:18 +00:00
drh
4f84e9c7e2 Add more corruption checking to the cell overwrite logic. 
FossilOrigin-Name: 58d14afe1e1288d114ea213458b3121e0a95670887861928858b7f143c76f789
 2018-05-03 13:56:23 +00:00
drh
9b03192e15 Bug fixes in the overwrite optimization. 
FossilOrigin-Name: 0cb6cd2a6a596afaa1cca6c5f5abc2ea75d04f254c7debaf36ecd6a90b66aed6
 2018-05-03 12:57:48 +00:00
drh
3de5d16cf7 The sqlite3BtreeInsert() routine tries to overwrite an existing cell with 
modified content if the new content is the same size.  Pages are only dirtied
if they change.  This prototype works some, but still has issues.

FossilOrigin-Name: 489451b378819621537231c1c8a07704437e11c1f5384fd53b09f3977d2213a4
 2018-05-03 03:59:02 +00:00
drh
fa16f5d9d6 Enhance EXPLAIN QUERY PLAN to report the generation of constant rows using 
VALUES or just a SELECT without FROM.

FossilOrigin-Name: c75eee69fa8a9b56ee58a4cc539e80cc982f43390dc3a357344d58479dd89a41
 2018-05-03 01:37:13 +00:00
drh
cdf88760da More test case updates. Tests are all running now. 
FossilOrigin-Name: dab5e5294813891469660cceb211ac1a1e526715bb57dcdbb1ab90321e6a4dad
 2018-05-02 19:42:33 +00:00
drh
b3f0276b9e Fix test cases so that they work with the new EXPLAIN QUERY PLAN output 
format.  Only some of the cases have been fixed.  This is an incremental
check-in.

FossilOrigin-Name: 5f0e803e33aa557865d5fc830d9202d628de9a94c9757058ca48f1a560702cd3
 2018-05-02 18:00:17 +00:00
drh
84a01debf9 Improved EQP output for recursive CTEs and multi-value VALUES clauses. 
FossilOrigin-Name: f2f525548c65f89f55cbe91da8a21512dedc6f7b68b58b7906d653e800a2963a
 2018-05-02 16:13:48 +00:00
drh
85a40ebc03 Prevent VACUUM from running any commands in sqlite_master.sql other than 
CREATE statements.  That is all that should be there anyhow.  This fixes
a problem discovered by OSSFuzz.  Test cases in TH3.

FossilOrigin-Name: ab0d99d0b5edece4c639baa47ce1ca2c02774cb2515e5b7f36d9bd312ccd3310
 2018-05-02 15:00:26 +00:00
drh
03c3905f94 Fix a dangling-else problem that was causing recursive CTEs to malfunction. 
Begin fixing test cases to work with the new EQP output.

FossilOrigin-Name: 82ca44b82fed6814c84440ba8bfaa019488ab956e84ac165180e2fcece6facb2
 2018-05-02 14:24:34 +00:00
dan
fa5c69f5cb Fix a problem in the xBestIndex method of the closure extension causing it to 
allocate non-contiguous argvIndex values in some cases (an "xBestIndex
malfunction" error).

FossilOrigin-Name: 0c67150749cb3d067e14b2dcac9c3489e0f14bd18c0387f1d9bc93d21fc96fe5
 2018-05-02 08:12:22 +00:00
mistachkin
07430a8caf Add sqlite3_win32_set_directory8() and sqlite3_win32_set_directory16() functions. 
FossilOrigin-Name: 22089ea2bbea93eb1da7f08344789a5455077169443e40025f053d2a117f1c08
 2018-05-02 03:01:50 +00:00
drh
c631ded5e8 Improvements to the EQP display for compound select statements. 
FossilOrigin-Name: 699a77e479010a331b0423f157a2fbfc373688e3d0d04ae5e64376c00cb3d488
 2018-05-02 02:22:22 +00:00
drh
e2ca99c907 Begin reengineering the EXPLAIN QUERY PLAN function to provide more 
intuitive output.

FossilOrigin-Name: 70b48a7972dfbb44af3ccd8ccd830e984bec88d80a78b3566a5de86a16e7fc14
 2018-05-02 00:33:43 +00:00
drh
8c2e6c5fe0 The SQLITE_ALLOW_SQLITE_MASTER_INDEX compile-time option allows a CREATE INDEX 
statement against the sqlite_master table.  Once created, the index works, and
is usable by legacy instances of SQLite.

FossilOrigin-Name: 853f3163597b9946c0cbeb808ea6fd33a0cf48ae6b8f4459c4165db377f33a9e
 2018-05-01 18:39:31 +00:00
drh
bbd4ae5a2f Defer loading result column values into registers on an ORDER BY LIMIT until 
we know that the LIMIT does not exclude the current row.

FossilOrigin-Name: ce4ef46058f4aaea6623a41255a2e4b69bb24f16a287391df48f6bacdb4c4989
 2018-04-30 19:32:49 +00:00
drh
b57e3ec5d8 Test cases added for SQLITE_DBCONFIG_RESET_DATABASE. 
FossilOrigin-Name: 08665a9e2e50a0a1e62529884cf65f8090debe89a306a3904b53268729ab5ad5
 2018-04-28 19:08:02 +00:00
dan
2b137d65f5 Fix an RBU problem causing spurious SQLITE_CONSTRAINT errors when restarting 
an RBU update in which more than one source table writes to a single target
database table.

FossilOrigin-Name: 564ae8297d417ba4b7978e430d41f125007177673163f6ed9adc3a3974f73d24
 2018-04-28 18:20:01 +00:00
drh
a19d09677b Add the SQLITE_DBCONFIG_RESET_DATABASE control for resetting a corrupt 
database file without closing any database connections.  Added the
".dbconfig" command to the CLI.

FossilOrigin-Name: a200a49edeaca5a787a3036070f7ced3cb6e9495f8afe7b74d5cde02c79b20dc
 2018-04-28 13:21:00 +00:00
drh
7df011969c Add the SQLITE_DBCONFIG_RESET_DATABASE control as a replacement for 
the reset_database pragma.  Resetting the database should be hard enough
to do that it cannot be done by accident.

FossilOrigin-Name: ff836cb8b0377c5970ecb2b797702e2b5d208eda443ecbd55f4c238a3094b28a
 2018-04-28 12:43:16 +00:00
drh
46462e35d3 Merge updates from trunk. 
FossilOrigin-Name: 94877e495c563f101b51cd8891ca7665c7aab87ff526157f1dc1781e0a2a5d87
 2018-04-28 11:22:53 +00:00
drh
1efa8023a1 Prevent deep recursions on nested COLLATE operators. 
FossilOrigin-Name: 6e098ee415f1a530e17a942c9ba51d67c25a3ebff6b97377b7858d0b10bcec92
 2018-04-28 04:16:43 +00:00
drh
6bfd973ce6 Fix compiler warnings in FTS3. 
FossilOrigin-Name: de508e831a43f02c3b354a24ea34798da03c163bae5521c852c9ddd252723739
 2018-04-28 04:10:55 +00:00
mistachkin
542805d174 Document and expose sqlite3_win32_set_directory() function for use on Win32. 
FossilOrigin-Name: 7626b593405ca720e371b9f698b72b499b7c829bfe00f758140bc542cf970689
 2018-04-28 01:46:22 +00:00
mistachkin
c1e1ffeafb Add comments about the intended use of the sqlite3_data_directory variable as it pertains to the sqlite3_win32_set_directory function. 
FossilOrigin-Name: d11c419756ce28fcc1f58df6bbe59a3d8d19d0441970aa7bfa216ba915ceddf5
 2018-04-28 01:44:27 +00:00
drh
0314cf3aa5 Add the "PRAGMA reset_database=ON|OFF" command. When on, it causes the 
database to appear to be empty, causing the next transaction to reset it to
an empty database.

FossilOrigin-Name: 02e1a13c1f04bb72599b98f51240c78d0d050de264fef5808fd97db3f4c16dac
 2018-04-28 01:27:09 +00:00
mistachkin
95d5ae19d1 Document and expose sqlite3_win32_set_directory() function for use on Win32. 
FossilOrigin-Name: cbce7180ee664367ee8fc1f8af703eb7845bb58ade6870cc3b7608dcbe5952b3
 2018-04-27 22:42:37 +00:00
dan
03db962ab5 Update test script fts3expr4.test so that it always creates fts3 tokenizers in 
the "en_US" locality.

FossilOrigin-Name: 576a8f69ae25883f752e58953624e9f7126db998bebaa1f07f7c2ec47aaecabe
 2018-04-27 18:05:01 +00:00
dan
0ef54fa6e8 Fix a test script error causing tests to fail in soak.test. 
FossilOrigin-Name: 462b52b121c1882e0eca819bc30c0f6e94d7fdd60047d2c32adeff3a1eb70546
 2018-04-27 16:35:44 +00:00
drh
ef9e3d78f2 Enhance the comments in the templatevtab.c implementation. 
FossilOrigin-Name: 05f6278a02e5cde89f76ced5af7d508e26576d7291dad7ee9e06b1a3be516cb0
 2018-04-27 15:17:08 +00:00