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Commit Graph

14444 Commits

Author SHA1 Message Date
drh
60f34ae091 Enable sqlite3_deserialize() in the CLI. The --deserialize option associated
with opening a new database cause the database file to be read into memory
and accessed using the sqlite3_deserialize() API.  This simplifies running 
tests on a database without risk of modifying the file on disk.

FossilOrigin-Name: 5e0129ee9afa7c2d707f8ac9e29ef3583c49bb1d0965085c067d58f828ac8cdf
2018-10-30 13:19:49 +00:00
drh
f4452cfbed Fix a potential assertion fault that can occur while trying to DROP a table
from a corrupted database file.

FossilOrigin-Name: 147a9429a558cf34c316ab8f87832e97caff55d92df696ab6fd045466c8c663d
2018-10-29 21:01:28 +00:00
drh
5aa20378f7 Fix minor memory leak in the dbstat extension that can occur following an
attempt to analyze a corrupt database file.

FossilOrigin-Name: cb874fd87384be397008e953242d5773ef5d64e07c3e1ae352a42a25d70597b4
2018-10-29 18:33:42 +00:00
mistachkin
8bee11a41e Add the sqlite3_normalized_sql() API.
FossilOrigin-Name: 592b66e8058dd03a056a036e2606247c9efdb06d15eebe9bcc455f7f55e30ae6
2018-10-29 17:53:23 +00:00
drh
f888158c7f Harden the dbstat extension against corrupt database files.
FossilOrigin-Name: a0d47f25ae7bdf98f5b853f23776b3bf86bea7c0dda386664c1e3b1c363c518f
2018-10-29 16:07:10 +00:00
dan
f689400dc7 Prevent an == constraint specified using the table-valued-function argument
syntax from being used to optimize any scan not related to the virtual table
for which it was specified as an argument.

FossilOrigin-Name: 4d46685f282409f7154be288719cbea4b743d7ea5315a55a91462003497469f7
2018-10-26 15:36:53 +00:00
drh
8e5bfedd22 In the WHERE-constraint propagation optimization, if there are duplicate
constraint, make sure only one of them propagates.  Proposed fix for
ticket [cf5ed20fc8621b165].

FossilOrigin-Name: 5d5b596f152bb2781011a05f75f9e200774d4f69d648ef68de577b4ace973e07
2018-10-25 14:15:37 +00:00
drh
e23d05e807 Add the ENABLE_GEOPOLY case to the compile_options pragma.
FossilOrigin-Name: de940296d227c96db4d0cf913fc5c0e5138729eda7cda0a0ac6b704cce1e1e1e
2018-10-24 23:55:41 +00:00
dan
0f5f54062c Fix a problem with using window functions in compound (UNION, INTERSECT etc.)
queries.

FossilOrigin-Name: 059ff53a46c7f1e4bf3e7dc558312beef67826c2753e2ab7e4e7df498b37b617
2018-10-23 13:48:19 +00:00
drh
fa5c62ef2e Add the textkey and textrekey pragmas.
FossilOrigin-Name: f03164d45450cd7ff2162999aa9e51eec7fb5e7cab1fa83d876b544f8f841097
2018-10-11 18:41:50 +00:00
drh
e93f82658a Fix harmless compiler warnings in the CLI.
FossilOrigin-Name: 1916d2912a4ef5c251853de3c9d66417e20f0c0fc8ddfbc84c131dfd798439f6
2018-10-11 16:53:37 +00:00
drh
53f5f00762 Always reset the pager before changing the codec.
FossilOrigin-Name: 0bf0fd242b93c3bd308ab46db1be9edef141b89db07a0f5a4ed8b23c963da0d5
2018-10-11 16:38:56 +00:00
drh
f7f2a82aa0 On the first connection to a WAL-mode database that was not cleanly shut down
and contains a left-over -shm file, truncate the -shm file to 3 bytes instead
of to 0 bytes. Avoiding a truncation to 0 means that system monitoring tools
can better detect if a process illegitimately tries to truncate a -shm file.
Such a rogue process might think it is being helpful by cleaning up old files,
but there is a race condition that can cause damage to the database.

FossilOrigin-Name: 90cf32cde072a305f30c75a71665d1f9e23e805c0a49f5306f015c056dd70f0c
2018-10-11 13:51:48 +00:00
drh
1dbb147598 In the CLI, fix a file descriptor leak following OOM and a missing va_end()
call.

FossilOrigin-Name: ec36d15a9e349f4295a9e2215dea0a18e9276e0e4ce2d05021e6b467ab7763bb
2018-10-11 10:37:24 +00:00
drh
b6c4d59e89 In the unix VFS, fix the heap shm allocator (used for unix-excl)
so that it works even on systems where the page size is larger than 32KB.

FossilOrigin-Name: 7fbb083c5cf0948af3624b7538ffa086f77de27a3e84a7039ae7d6574f1a3a54
2018-10-11 02:39:11 +00:00
drh
a9e4be3b08 In the CLI, allow the SQLITE_HISTORY environment variable, if it exists,
to specify an alternative file in which to store the shell edit history.

FossilOrigin-Name: 696e82f7c82d1720756078e73f3b15b4cafc202ec290e66f9095a3246c65a3cb
2018-10-10 18:56:40 +00:00
drh
488cddfa86 Fix the ".help -all" option in the command-line shell.
FossilOrigin-Name: aac8f1dff0728c629b5cbf30369ee91c5862a707ede694dc2628d1d4f5a6c202
2018-10-06 14:38:17 +00:00
dan
07052d5535 Add test cases and assert() statements to ensure that the authorizer is being
called as expected from within ALTER TABLE.

FossilOrigin-Name: ff10d2c7de430c88167b1e6e4f5307eee5d69e22c8d24b2ef4fcb3aea25a92e1
2018-10-06 13:46:22 +00:00
drh
f470c37a2b Add an ALWAYS on an unreachable branch in the ALTER TABLE logic.
FossilOrigin-Name: ebcd4523171f0988ff08e2bf36fb8a0caa40efe7ac7556b4eb206784969b03e4
2018-10-03 18:05:36 +00:00
dan
60bdcf5e56 Change a type in shell.c.in from "int" to "sqlite3_int64" in order to
avoid a compiler warning and possible integer overflow.

FossilOrigin-Name: bf0a6634cd8f9457992b8da522a6775a304156815bf6f4f64f96016356baa870
2018-10-03 11:13:30 +00:00
drh
9b7e8e10f2 Add an additional assert() verifying mutex invariants on the
unixShmSystemLock() routine in the unix VFS.

FossilOrigin-Name: cb1511065d5348c5b3015dc9d690fc5d519a14ffdfa7164bb552a4fa686ad142
2018-10-02 20:16:41 +00:00
drh
8820c8d3ee Additional field name changes and commit fixes associated with shared-memory
locking in the unix VFS, to improve maintainability.  No logic changes.

FossilOrigin-Name: 9280774a4bbc665d70f346d258768cbcca3e0e77791473aecfd7d0e87810ab31
2018-10-02 19:58:08 +00:00
drh
24efa5444d Fix comments and refactor some names associated with shared-memory locking
in the Unix VFS.  No logical changes.

FossilOrigin-Name: 3e9f1635271c92dce5324728b4ee1cc1a1856ec3c60b1b512a652c21e010e63e
2018-10-02 19:36:40 +00:00
drh
bdc9744f60 Change the name of the pragma to PRAGMA table_xinfo. Improve the
mkpragmatab.tcl script to reuse column names where appropriate.

FossilOrigin-Name: 2fdd068987e59b979045d71ae64e700600ef07e54ae340f30c2064e5dcccb8ea
2018-10-01 21:26:30 +00:00
drh
d7dc0a36cc Add the extra "hidden" column to the end of the PRAGMA table_vinfo output.
FossilOrigin-Name: cf1b76135f511530dcc7b82f78c952bf97ebcddb40be06f713f9f2326915fabe
2018-10-01 18:28:42 +00:00
drh
5612ef1057 Bring the PRAGMA table_vinfo statement up to date with trunk.
FossilOrigin-Name: 6f606f99231f88ae5ff719d0ce21afc4b844490102c27ac20aa606baaf78d8d6
2018-10-01 17:15:17 +00:00
drh
44d068532e Fix a potential crash that can occur while reading an index from a corrupt
database file.  The corruption is a record-header-size that is larger than
0x7fffffff.  Problem detected by OSSFuzz against GDAL and reported to us 
(with a suggested fix) by Even Rouault.  The test case is in TH3.

FossilOrigin-Name: 8ac2cdda68f92b0352bc7f0b4be5fca4bb58565ca65055fb34153cc284ed6922
2018-10-01 13:54:30 +00:00
dan
5351e884aa Fix a problem with ALTER TABLE commands when the schema features an INSTEAD of
trigger that uses NEW.* or OLD.*.

FossilOrigin-Name: c52f457e56eb9d573eb67093731eb231aaf6fd6dbdc397e6f948b82736fbe3ab
2018-10-01 07:04:12 +00:00
drh
15fc988ce0 Add the PRAGMA table_vinfo command (with an extra "v" before "info") that
works like PRAGMA table_info (without the "v") except that it also shows
hidden columns on virtual tables.

FossilOrigin-Name: 8bcd1a59560aa7ea73e6529e5c14ece8ac09bf7e99efdcfd388fead39846b6bf
2018-09-29 19:38:42 +00:00
drh
09d00b2f4f Ensure that the OP_VColumn opcode does set sqlite3_vtab_nochange() unless
the OPFLAG_NOCHNG bit is set in P5.  Fix for ticket
[69d642332d25aa3b7315a6d385]

FossilOrigin-Name: 322ab1fc613f616e9f07dc94ef74a29572a21cc476d88e97b4ce865500a47b62
2018-09-27 20:20:01 +00:00
dan
6afa35c985 Disallow the use of window functions in the recursive part of a recursive CTE.
FossilOrigin-Name: 7fc2994434c7d9ed29c96a69c07e8eb4e97be776473c170c63f9a1bbaa09fa68
2018-09-27 12:14:15 +00:00
mistachkin
1c06b47864 Minor simplification: In OP_ParseSchema, read the p1 register once.
FossilOrigin-Name: bd250533a06e4a11c1f548c3de66b8562fc627383848570d7d030cf132fd336f
2018-09-27 00:04:31 +00:00
drh
eb7f2a0fc5 Further improvements to the ".help" command in the CLI.
FossilOrigin-Name: edc3d18ecbda32d6a55de76ee7335342425c57d917e9b48814a7301a012263b2
2018-09-26 18:02:32 +00:00
drh
98aa2abc45 Begin revamping the ".help" command in the command-line shell so that it
can accept an argument and will do a search for commands that match that
argument.

FossilOrigin-Name: 209afb8d06466536863b89a8acb9a1a18477a06331d8cce95fc6380e1666b6f5
2018-09-26 16:53:51 +00:00
drh
5398806889 Slightly smaller and faster alternative to [507d892c3a40a0bacbd47] that
fixes a problem with views that use window function as part of complex
expressions.

FossilOrigin-Name: d7c816ae15f05f21b9b213161e1044aaefc56f17e7bc4b7b551a9e04efc05855
2018-09-24 15:39:30 +00:00
dan
2fae150402 Fix a problem with views that use window functions as part of complex expressions.
FossilOrigin-Name: 507d892c3a40a0bacbd47ed3c4fe2d8925a82716ae08da8401750a42782ba454
2018-09-24 14:51:59 +00:00
drh
6314eeaeb3 Allow a writable virtual table to have a schema with an INTEGER PRIMARY KEY
and WITHOUT ROWID.  This fixes ticket
[f25d5ceebe1d710ff61a571e395356869d8272ef].

FossilOrigin-Name: 5a38d9281b4ad63b853efa5cdd5ad4a64b19dfaf8250ef8e0e186684df1211ea
2018-09-24 14:10:55 +00:00
drh
6fb5d358a8 Use compile-time options SQLITE_QUERY_PLANNER_LIMIT and
SQLITE_QUERY_PLANNER_LIMIT_INCR to control the value for
WhereLoopBuilder.iPlanLimit, rather than embedding magic numbers in the
code.

FossilOrigin-Name: 903e501894b2a5dd7055b5154d74d4a47a619f76e66485a4d62b6259f10723d6
2018-09-24 12:37:01 +00:00
drh
7ebb605c0a Increase the initial value of WhereLoopBuilder.iPlanLimit to 20K. Issue
a warning if the iPlanLimit reaches zero.

FossilOrigin-Name: 3dd35f51187574f47f860405309877cdbf9dc5710703dfd98cf98073b771140c
2018-09-24 10:47:33 +00:00
drh
f8937f9034 Fix a faulty assert() in the validation logic for the LEFT JOIN strength
reduction optimization.  Problem found by OSSFuzz.

FossilOrigin-Name: 2fd62fccd13e326dbd7dd730112542c6faa56e466bf4f7b8e22ced543031280c
2018-09-23 02:01:42 +00:00
drh
2c3ba94969 Enhance WhereLoopBuilder.iPlanLimit to handle a case involving the OR
optimization discovered overnight by OSSFuzz.

FossilOrigin-Name: 7b59930a1d7b664b54d5a2bc9fa385925b5f4c8f34bf401c798307e3e2dae2c6
2018-09-22 15:05:32 +00:00
mistachkin
7cc5595a01 Fix harmless compiler warning when compiled with SQLITE_OMIT_AUTHORIZATION.
FossilOrigin-Name: 50f2fa19532e0f849d61d9e2a97427cfbf64cfb787ca481ef8c860d0f24f6cfe
2018-09-21 23:41:18 +00:00
drh
5eaebf3a63 Comment typo fixed. No code changes.
FossilOrigin-Name: 7e68cdab20f50cf776b92b2138bb4aba7cb070f2bd855dd4cbbf46d447f2dc88
2018-09-21 19:06:09 +00:00
drh
fc9098a45e Put a limit counter on the query planner that restricts the number of
index+constraint options that can be considered for each table in a join.
This prevents certain pathological queries from taking up too much time
in the query planner.

FossilOrigin-Name: 8690b5a0cc08eeb175230de45d4ca9b9f7b9b22aeebea70b8b7151f10b130969
2018-09-21 18:43:51 +00:00
drh
0d7f0ccd96 Optimization to the OP_MakeRecord opcode makes speed-check.sh run about
1.1 million cycles faster, and results in a slightly smaller library.

FossilOrigin-Name: d10e63629183f6daf0c263cd4dae052a3786c8c1480b3b6a73124b3315e41951
2018-09-21 13:07:14 +00:00
drh
5db90714aa Minor code simplification.
FossilOrigin-Name: 22ae8a52dd2fb744f467c7dccf1d7fe7c7cef0e1dcc897dd492f897e84c9facb
2018-09-20 20:43:28 +00:00
drh
42eb070729 Add the "PRAGMA legacy_alter_table=ON" command to enable the pre-3.25.0
behavior of ALTER TABLE that does not modify the bodies of triggers or
views or the WHERE clause of a partial index.  Enable the legacy behavior
by default when running the xRename method of virtual tables.

FossilOrigin-Name: 7edd26ed27ed1e7eab603058f7d55f2eac45e7bd1908bfa5f32293611883b157
2018-09-20 20:15:02 +00:00
drh
eda079cd2c Combine the Expr.pTab and Expr.pWin fields into a union named "y". Add a new
EP_WinFunc property that is only true if Expr.y.pWin is a valid pointer.
This reduces the size of the Expr object by 8 bytes, reduces the overall
amount of code, and shaves over 1 million cycles off of the speed test.

FossilOrigin-Name: ad130bb86e74e6ce165fdbdce3a19699510f0e62071c1c7923b5a4538d888c7c
2018-09-20 19:02:15 +00:00
dan
34566c4434 By default, make all "ALTER TABLE RENAME" statements executed within a virtual
table xRename() method exhibit the legacy behaviour.

FossilOrigin-Name: 71947337e98b90debb13b390119bc2a6b39dd41535151b836071ee327a31e45d
2018-09-20 17:21:21 +00:00
dan
674b894269 Add a PRAGMA that restores the legacy ALTER TABLE RENAME TO behaviour.
FossilOrigin-Name: 5acad2e92c11c209bedc6ac8a709595e8070eed028ffc82af61499e5ceaa5e2b
2018-09-20 08:28:01 +00:00