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19723 Commits

Author SHA1 Message Date
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
ba160891de Add the "PRAGMA table_xinfo" command that works like table_info but also 
shows hidden columns in virtual tables and adds the "hidden" boolean column.

FossilOrigin-Name: defa0515b8fd50ed9be699542f8c6695dd4a60c02f310665db6657ec5b6b67d0
 2018-10-01 21:41:15 +00:00
drh
bfbf7d9daa Test case for PRAGMA table_xinfo. 
FossilOrigin-Name: 7694b9bc3003db6ba0b41c5029c8f7b84c07724e7a518e835e98b3c46e4ea227
 2018-10-01 21:36:38 +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
dan
49f84ce1cd Speed up xAccess() calls made on an RBU VFS when there are lots of open 
connections.

FossilOrigin-Name: 310b4b65b8c8ee080760c7efb4c7e20244c6063a5dba37a4f40490105aafd29f
 2018-10-01 17:33:35 +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
ca9a5faf70 Fix test cases so that they work with ICU. 
FossilOrigin-Name: d04b2013b5436430ebbf7053d637fd89c1b15affcb42787dcf1cf5ffc3ae54e2
 2018-09-28 23:53:24 +00:00
dan
f8248c42f9 Have sqlite3changegroup_output_strm() call its output function more regularly. 
FossilOrigin-Name: 8467c31aa0bf24e597f680748460a99f425c49f5ab741c3574c339aa56857146
 2018-09-28 20:46:41 +00:00
drh
09b523c99b Fix a bug in the sqlite_memstat virtual table that was causing it to report 
the amount of memory used as zero bytes.

FossilOrigin-Name: 8a758a872175b0c74e631c231240c5c733fbec708d0cff23eb9c4025e4a800ec
 2018-09-28 18:51:18 +00:00
drh
60afcb80ee Add the geopoly_regular(X,Y,R,N) function to the geopoly extension. 
FossilOrigin-Name: 4505bbae58357eacab262b642b2a56d6dd380de72faceb5bbfd042eb94a12c06
 2018-09-28 14:01:17 +00:00
drh
601c8f2829 Make most geopoly functions pure. 
FossilOrigin-Name: 944e167a98e995c5750c1fcd44df857d6b10c1cbb91731fad2849415c42b2cfc
 2018-09-28 13:18:24 +00:00
drh
b2d83494d3 Rig geopoly to use sqlite3AtoF() if it is available, as that routine is much 
faster than atof().

FossilOrigin-Name: 470c6c07d0eb70806ac257c1c8ad877e041bbc14ff9a5c490edb51b2956ae726
 2018-09-28 00:16:57 +00:00
drh
17e65ae4c0 Small performance optimization in the JSON parser of Geopoly. 
FossilOrigin-Name: fb520e71035258d5490be33ee28575df2caefa5d5a301c8bbdf1471551c96282
 2018-09-27 23:57:45 +00:00
drh
50db3e8d51 Enhance the GeoPOLY extension so that it always stores its polygons in the 
binary format, which is faster and more compact.

FossilOrigin-Name: dc35f7b1754a78fa0d70c92754de07bb3c28d0d31cb929ee8a3a47ac4f3d446e
 2018-09-27 20:37:52 +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
0efb6f5135 Another minor tweak to memstat.c so that it may be built against older versions 
of SQLite.

FossilOrigin-Name: 4c1fed60b9b35ac2f5d2f2533b54db429d72bdbc0aad0dd5af52ff851789d4ae
 2018-09-27 17:33:06 +00:00
drh
6dd5f07d3d Modify the memstat virtual table so that it works with SQLite version 3.9.2. 
FossilOrigin-Name: 7171d8ae6b1e7c97b0cf06bcca2262674c9ce557c85666b4b77c16cbac508502
 2018-09-27 17:15:21 +00:00
drh
982c1fac2b Add the sqlite_memstat extension - an eponymous virtual table that shows 
memory usages statistics for SQLite.

FossilOrigin-Name: 954ef61f6a02532e72c815208ec839310f1e00d69e0003cc6f5426f0559229d1
 2018-09-27 17:03:03 +00:00
drh
d7134fe0c1 Enhancements to sqlite_memstat: 
(1) Add an extra "schema" column to show the schema name for ZIPVFS stats.
(2) Only show ZIPVFS stats to schema that use ZIPVFS
(3) Put a NULL in unused columns of the output.

FossilOrigin-Name: 9351135b4331107be2f2bda7b6adbd5436381f4f9a68340e8a172b6517ec3f12
 2018-09-27 16:57:42 +00:00
drh
7c5577acdc Add initial ZIPVFS support for the "main" database to the sqlite_memstat 
virtual table.

FossilOrigin-Name: 9cd27350b0f62debfe3238c57c3ab51079699142e82c05a7ec8460a8429f55f2
 2018-09-27 15:45:03 +00:00
drh
d7fda6cfc5 Initial prototype of a eponymous virtual table that accesses sqlite3_status64() 
and sqlite3_db_status().

FossilOrigin-Name: 0b44e1f68e0c8349367e3f929d4734c3df96338ec8d6fb652565bf894e8b8343
 2018-09-27 15:21:13 +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
dan
2e5e0e10f2 Tweak spellfix.c so that if SQLITE_SPELLFIX_5BYTE_MAPPINGS is defined at 
compile time the Transliteration structure has space for 5 byte (instead of 4
byte) mappings.

FossilOrigin-Name: cbaf5b6c1b07b29b2c83fa01618de856d81cc1174769cb9770cb5c894cc87ace
 2018-09-26 16:05:07 +00:00
drh
6b26a7b950 Fix typos in the header comment for the sha1 and sha3 hash extensions 
in the ext/misc folder.

FossilOrigin-Name: 4ed9d83a0b14a22b3ecf25785b03b5a824d260e01a608aea85231df9b816421d
 2018-09-26 03:43:42 +00:00
dan
6705584a5b Fix a problem in releasetest.tcl causing configuration "Fast-One" to fail. 
FossilOrigin-Name: 42e04fefbc241dd33f12abd66344a87720ae4cda6d82f2882217b3cb71be8733
 2018-09-25 13:51:31 +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