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30,100 Commits 1,570 Branches 183 Tags
optimize-null-values
Commit Graph

1670 Commits

Author SHA1 Message Date
drh
9b35c679a9 Remove a NEVER() in rebuildPage that is reachable, as is demonstrated by 
dbsqlfuzz case beac09b2756b5d285aa68f9737fdb06c972f159a.

FossilOrigin-Name: ac3f617827e06800d26ef688c5f5480b9621676f141d2eac134f877e0c454149
 2021-10-25 18:51:56 +00:00
drh
7bf3d01a83 Merge trunk enhancements into the autovacuum-pages-callback branch. 
FossilOrigin-Name: c26c9e5040ef4c52f2a99597e3a7c3eabd52c905d874fc76ca10fd54b749fa97
 2021-10-19 18:00:05 +00:00
drh
da125367fc Add NEVER() macros on branches that become unreachable due to the 
previous check-in.

FossilOrigin-Name: 5fa272cc033216ed2d3b16078db58accf4d9a3d10e6dd64d362ef844b3e267b6
 2021-10-16 18:53:36 +00:00
dan
1273d69c82 Have the btree layer detect when a "DELETE FROM tbl" statement is clearing a database page that is still in use (due to database corruption) and report SQLITE_CORRUPT. 
FossilOrigin-Name: a6fda39e81d0da98dd6b60b32e6df786f0089c1f4ac7f3a2936afd118bd04353
 2021-10-16 17:09:36 +00:00
drh
1bbfc6744c Demostrate a prototype sqlite3_autovacuum_pages() interface. 
FossilOrigin-Name: bb6f2b8b486c225043bc64e5f74ff6bbad6c5d1f337f0c81eeb6172b087bb943
 2021-10-15 23:02:27 +00:00
drh
a71490889e Convert an assert() into a corruption detection branch in 
sqlite3BtreePayload().  dbsqlfuzz 848171b5d58f6e4a62257466e0e7de16696d4f02.

FossilOrigin-Name: f038d7f90e04838479e44ded00f627ec5ad8e1bd477edea8e87e66dd37485f30
 2021-10-13 20:11:30 +00:00
drh
cd789f9bd9 Fix an over-zealous assert(). 
FossilOrigin-Name: e2bb82a4095427eb810903180fa27fb85b52144bdcfe33388352638428d017f5
 2021-10-11 09:39:42 +00:00
drh
15b5411a67 Remove a "harmless()" macro that is no longer relevant. 
FossilOrigin-Name: 87c357c60168fdc52c82382aa7288d66886f5fbe2ae6af68344dbcfdbca9069b
 2021-10-08 18:12:37 +00:00
drh
635480ef47 Improved detection of database corruption. 
FossilOrigin-Name: c7fae46c8a3bd78adc5a01340eff6c1efa75f9384dc7f42cb81717b029e7c56f
 2021-10-08 16:15:17 +00:00
drh
8746396385 Fix a harmless typo in a comment. 
[forum:/forumpost/218c116fdf|forum post 218c116fdf].

FossilOrigin-Name: 8ca0c7d826622c9660ecbd9664eba2bac9bb1b850f96f35d6c959d0acde2309b
 2021-10-05 22:51:26 +00:00
drh
7d4c94bc0f Fix harmless static-analyzer warnings. 
FossilOrigin-Name: 32f33f356931242b59c01b5df7e180941231e3d9c91577ad33aa4a01e9d59092
 2021-10-04 22:34:38 +00:00
drh
ad1188b21c Try to fix a harmless static-analyzer warning in sqlite3BtreeTransferRow(). 
FossilOrigin-Name: 5906a0152deded614d965e790a33c67832890828a4835451d65c06414ba71f8b
 2021-10-02 18:22:24 +00:00
drh
e85e1da07b Fix harmless compiler warnings. 
FossilOrigin-Name: 94b59691ee50a4666b25e36d1529fc52f714bbe94c3e8ccb35bf0a4ea11050db
 2021-10-01 21:01:07 +00:00
drh
7f58117921 Back out changes [00286ca5d998d802] and [6844ede29e1dac93] (replacing the 
associated branches with NEVER()) and add a single new test to
btreeOverwriteCell() that detects when an overflow pages is also mapped
into a b-tree page and raises and immediate SQLITE_CORRUPT error before
making any changes.
dbsqlfuzz 81791bd980fe6935ff2c7334ec8bef11c1c12b82 and others.

FossilOrigin-Name: 32210fa4ac4f06e1705ef808731c7be040a23f9a8630986440100c5d4e76dc07
 2021-09-10 01:02:42 +00:00
drh
3acb3b7845 Remove a NEVER() in btree that is sometimes reachable. 
dbsqlfuzz b9140023005430654c8fe544cf0a082ef8d561c1.

FossilOrigin-Name: 6844ede29e1dac93a392dfb1e7e676bb9d0a2e7bbec0a4a5804ffc2025a99b66
 2021-09-09 19:19:02 +00:00
drh
30ad4a6932 Improved database corruption detection in the editPage() subroutine 
of the btree rebalancer.
dbsqlfuzz f035b1b5a100a5f0cffb95c958b6c67d7c5eaf1f.

FossilOrigin-Name: 00286ca5d998d80214d5e8d501a3b305f432cda1c0ef67ca530e1219565909b7
 2021-09-09 14:03:55 +00:00
drh
0ccda5294f Fix a typo in a comment. No changes to code. 
FossilOrigin-Name: d953646a63bf96a8e6e57fefaa60ae1487e5e4eb776fb38cd9c4ce002e74d016
 2021-08-23 15:56:01 +00:00
dan
2c7188732d Add the sqlite3_changes64() and sqlite3_total_changes64() API functions. 
FossilOrigin-Name: 48fdec22c966003f5577e0bf52906ef90df11e4e395723a646304e67ed976f37
 2021-06-22 18:32:05 +00:00
dan
020c4f3830 Fix a problem causing sqlite3_changes() to return an incorrect value following a "DELETE FROM tbl" command on an intkey table (because internal b+tree cells were being included in the count). 
FossilOrigin-Name: f662ff4746aaa43e63e20710b8cbfeeceab3183e953ac1685c41846d2e9d124c
 2021-06-22 18:06:23 +00:00
dan
b9f8a187de Ensure that the cell array used in balance_nonroot() is always large enough, even if the pages being balanced are corrupt. 
FossilOrigin-Name: 53f64e83b39cb56ac7211ffc80d06da13318e1da9dbca7b9123954f5be229a0d
 2021-06-22 14:59:34 +00:00
drh
b915418134 Remove a NEVER() that is reachable by a corrupt database. 
dbsqlfuzz 8456a0f88e39a49fb675d8f77394979ebb2a03c1.  Test case in TH3.

FossilOrigin-Name: 1c41e86fa102ec2b73fb7a55357ba6328fda37af316215e8808be88e2d1fd75f
 2021-06-20 22:49:26 +00:00
drh
41d26396bb Do not allow an SQLITE_CORRUPT error to mask a prior SQLITE_IOERR in 
balance_nonroot().  dbsqlfuzz 5e1c86e7f18023f2b9abe3429977d7ea726f50d8

FossilOrigin-Name: 50e818767e423991b99b3155cb15a0d1c1b744ab6139a8273f9348aab9a53d9c
 2021-06-20 22:17:49 +00:00
drh
5d8ade1f67 Remove unnecessary (redundant) variable initialization from 
sqlite3BtreeInsert() for a small size reduction and performance increase.

FossilOrigin-Name: 70d1836474207fa045ff7aa513839c9df26ea6e180eb898b30d89bd5b3833f58
 2021-06-19 20:20:23 +00:00
drh
42a410dcad Split the sqlite3BtreeMovetoUnpacked() routine into two separate routines 
sqlite3BtreeTableMoveto() and sqlite3BtreeIndexMoveto(), since we usually
know the type of btree in advance.  This results in less branching and
better performance.

FossilOrigin-Name: 3b0d34e5e5f9a16c3397e4551f3b534729b1b375770f05f6ed5847818b1f4c0b
 2021-06-19 18:32:20 +00:00
drh
ccf0bb49bb Avoid use of uninitialized memory while running defragmentPage() on a 
corrupt database file.
dbsqlfuzz 4c45cecc0b255aaf2ea85453ccd17e814fd0b6b2

FossilOrigin-Name: 35e40d75754ec6fb93fe57c6ecbe731104e77c997d7e17ef1a22984837dfcab2
 2021-06-07 13:50:36 +00:00
drh
a6df0e693f Fix the truncate optimization so that PRAGMA count_changes and changes() 
return correct values even for a WITHOUT ROWID table.
[forum:/forumpost/07dedbf9a1|Forum post 07dedbf9a1].

FossilOrigin-Name: 820ae3b117c2d8c117c0c5a4e440a7d06886772516c7fc0a84606388f91be195
 2021-06-03 18:51:51 +00:00
drh
904e48eb89 Fix harmless compiler warnings. 
FossilOrigin-Name: ace12a3912a4fdc2f0e741361ec705652a11b6f5e3548d54bd6f273671ba1e09
 2021-05-17 17:14:38 +00:00
drh
86c779fe42 Performance optimization to the clearCell() routine inside of btree. 
FossilOrigin-Name: c4e02619a4dc8b07f658e7c88011991a086eb1e760d920b9024a11437daaabfd
 2021-05-15 13:08:44 +00:00
drh
49bb56e9b0 Small performance improvement for sqlite3BtreeInsert(). 
FossilOrigin-Name: 4ae64484c57740333322cebd713b50b01a5a5838d41c65f67e26d65769770789
 2021-05-14 20:01:36 +00:00
drh
ccb897c70a Fix a NEVER() that can sometimes be true. 
dbsqlfuzz 9a86fb3830977e216fde061bfbe1c1e5c2e9bfc4

FossilOrigin-Name: f39666e64d6d32420170c54f874d8314eb8c6f91df625f7b28f9ccffb9474dc0
 2021-05-11 10:47:41 +00:00
drh
c3c23f346c Improved detection of oversized cells in balance_nonroot(), especially in 
index b-trees when a cell is being moved from a child page into the parent
page in order to become a new divider cell.

FossilOrigin-Name: 9080d3d5f5aaddbb3410158bcc446649651b7dce3940eb3491620ec9208914b4
 2021-05-06 11:02:55 +00:00
dan
f0ac29090b Fix a problem that could cause a crash in sqlite3BtreeDelete() when operating on a corrupt database file. 
FossilOrigin-Name: 6c6334660dfe81cc33a14b87b25d748b1c98b0702b7bc6db2e3ced16dc992740
 2021-04-26 15:32:36 +00:00
drh
eca3c67b1c Change a memcpy() into a memmove() to prevent a warning about overlapping 
regions passed to memcpy() in case of some obscure and unlikely database
corruption.

FossilOrigin-Name: bab132cbd18a529389a0315e60f30ccf1b565823116e0ec9b4f7684db1914c80
 2021-04-22 20:01:02 +00:00
drh
935ad98d60 Remove a testcase() that is no longer relevant due to the previous check-in. 
FossilOrigin-Name: ca70c8ac72c9fe3b92f8e63151229bebdccc769c5c4d603ad4f466dc4bcd11e0
 2021-04-20 22:48:25 +00:00
drh
8cae5a4a47 More aggressive detection of database corruption in the rebuildPage() routine. 
FossilOrigin-Name: a18c65068b16eae3c0725356d7f4775774b23e248c700cef8c15f23459fba68f
 2021-04-20 20:48:15 +00:00
dan
5b482a9832 Update an assert() in btree.c that may fail with a corrupt database. 
FossilOrigin-Name: d74bf88c5a027cf080a2892a3538fe5104952b5b3759a6eba1b1a98a75ddf5f4
 2021-04-20 13:31:51 +00:00
dan
7f65b7af42 Avoid an uninitialized-memory valgrind error by tightening up corruption 
detection in internal routine defragmentPage().

FossilOrigin-Name: 8096f7aee497f852b1404e13cdc8bafb54fcf6c540cd58addbc01eb2e27011b3
 2021-04-10 20:27:06 +00:00
drh
21c7ccb9ba Add NEVER() to a branch that became unreachable with 
check-in [58f36af2271517ab].

FossilOrigin-Name: e07ce463967521ab53463b21f80c8f90c337c15c250f69c3fccc1305f54f32df
 2021-04-10 20:21:28 +00:00
drh
d78fe4e1a4 Remove a NEVER() in a corruption detection conditional in allocatePage(). 
dbsqlfuzz 9c61c33802600b2b01dfb09b0386ceb4ade02a19

FossilOrigin-Name: c174f5d32b8c6bbad102065b2d5acae70ddb153f863a2842da836cf7db3f683f
 2021-04-09 22:34:59 +00:00
dan
f5ea93b432 Handle the corruption fixed by the previous commit in a different way so as to also fix dbsqlfuzz crash 753de0a0ac5b25b18f1e4d41e650d3333cdc270c. 
FossilOrigin-Name: cb27ce25095ab9b5acbe4bf010c7f6d8a71191c2f79b3bf3e63d8655b4fe0769
 2021-04-08 19:39:00 +00:00
dan
1bae648b73 Handle a special case of corruption that can present if "PRAGMA writable_schema=1" is set. Fix for dbsqlfuzz test case 6229ad63de49e3ba0630aaf0058868f36008bcca. 
FossilOrigin-Name: 58f36af2271517abafa9f4a46f2a5f97e66c001675c17868282197d599603d1b
 2021-04-08 15:19:46 +00:00
drh
0781219fd2 Earlier detection of page 1 on the freelist (which is impossible) and 
reporting of that as database corruption.
dbsqlfuzz 6fe6c504b320be5e3eed66896cb0db28bfb38a93.

FossilOrigin-Name: b1bf0d987578160f002035ff41ec7c82011288f1c0449414a4b3da39b20f871c
 2021-04-07 12:21:35 +00:00
dan
112501fec2 Update an assert statement that could fail when using "PRAGMA writable_schema = 1" to access a database with a corrupt schema. 
FossilOrigin-Name: 55cad6f628a4313c6652b36474c3397f097ac5c2503ae94605c030a54dc40916
 2021-04-06 18:02:17 +00:00
drh
319deefdb9 Fix an assert() in sqlite3BtreeLast() that needs an "|| CORRUPT_DB" term. 
Dbsqlfuzz case b92b72e4de80b5140c30ab71372ca719b8feb618.

FossilOrigin-Name: ad718388a1f6e25ceba43a40160fac0d9d9d3f26888e98d7b9db478c0b1780be
 2021-04-04 23:56:15 +00:00
drh
8d81aac13f Fix the OP_OpenDup opcode so that it is able to duplicate a cursor that 
was itself opened by OP_OpenDup.  Add additional verification of
ephemeral tables.  Fix for ticket [bb8a9fd4a9b7fce5].

FossilOrigin-Name: bcbe5308f3a3b94f965b0f5627cb29cce2e09343b86d757e2de889f7773576e7
 2021-03-18 16:47:24 +00:00
drh
76f7b16f1e Remove unnecessary code from sqlite3BtreeClose() and add test cases. 
FossilOrigin-Name: edbfdcaefae1e9a42c046c058341bf5b0f533c0b0cbd39543fcaa2a83d67561d
 2021-03-18 16:36:31 +00:00
drh
5a4a15fd2e Further sanity checking of the OpenDup cursors. 
FossilOrigin-Name: 0ec71cf16983697f68ab8d921d80a5f39611e4cb5e6e19cbc4a9ad6d49bfc835
 2021-03-18 15:42:59 +00:00
dan
eeee8a5f01 Automatically close ephemeral b-trees when their last cursor is closed. 
FossilOrigin-Name: 39b5af18c0580c8e92516d410f8c465bfec31b2d0be9df1cfd6a1d1a19b4fc14
 2021-03-18 14:31:37 +00:00
dan
918232aadb Allow instruction OP_OpenDup to duplicate cursors created by OP_OpenDup, as well as by OP_OpenEphemeral. 
FossilOrigin-Name: b8de980b2fb78088ef74e053cb987bb84319d13dc96ce1e89baaaa3fe8cf1efc
 2021-03-18 13:42:53 +00:00
drh
2b994ce5d3 Change the name of the iDataVersion field of Btree to iBDataVersion to make 
it distinct from Pager.iDataVersion.

FossilOrigin-Name: e4c44c0bca317c03f8e6d3aa7cc88e5f96159a3d91c07257d408f7db028fd151
 2021-03-18 12:36:09 +00:00