Commit Graph

21540 Commits

Author SHA1 Message Date
drh
36e678bc39 The sqlite3WhereEnd() call now unwinds all Expr modifications made by the
sqlite3WhereBegin().

FossilOrigin-Name: 7bfd42f1dc0c94f9bb74516e62fec8e39c20f4749f4e0972f66c2886d3c64f73
2020-01-02 00:45:38 +00:00
drh
2a83c10072 Provide the -DSQLITE_ENABLE_INTERNAL_FUNCTIONS=1 compile-time option. Fix
the ".testctrl internal_function" command in the CLI so that it does not
signal an error on a valid input.

FossilOrigin-Name: 8ee2ce92c082771675d0e8be597043cf9f0fd4f8a73d6a1498bf8743d6b3904a
2020-01-01 23:02:35 +00:00
drh
fc705da15d When generating code for a subquery, make a copy of the Select object and
generate the code out of the copy, in case the code generator makes
modifications to expression and the Select object needs to be reused.

FossilOrigin-Name: 4edddcc0bc8d71e9b8abac67bc3766f1d9143dddd1f59264859ce65e5aa9b8c6
2020-01-01 21:14:30 +00:00
dan
4ea562ee70 Ensure that when code for a scalar SELECT featuring window functions is generated more than once by the planner, separate ephemeral tables are opened for each instance.
FossilOrigin-Name: ce1417325273aba866767349b55d9bbfb61a08e716bebda2122918a9657ee38c
2020-01-01 20:17:15 +00:00
drh
aef8167421 Fix the sqlite3ExprImpliesNonNullRow() routine so that it correctly
handles a numeric comparison of two AND subexpressions.

FossilOrigin-Name: 07e504d5174a1a8b1aa05ec5b44ac81ab3ea706c5a098caa88deb3d489cec8fb
2020-01-01 16:43:41 +00:00
drh
171c50ec38 New test-only SQL functions: implies_nonnull_row(), expr_compare(), and
expr_implies_expr().  The SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test-control
is modified to toggle internal function access on and off for a single
database connection.

FossilOrigin-Name: 473892a8eceacf24d57fd0c72ff2a0b8be4e0d75e0af7a30bdb24fbc3b453601
2020-01-01 15:43:30 +00:00
drh
25c4296bd9 Factor out code generation for in-line SQL functions into a separate routine
inside of expr.c.

FossilOrigin-Name: 586a65a28fc6cac77309612abc32a2e1017c65e0387f9f438f5d8ac8406da8eb
2020-01-01 13:55:08 +00:00
drh
6d67aff0e3 Issue OP_ReleaseReg opcodes against the array of registers used to compute
index records after the index record has been computed.

FossilOrigin-Name: e3330861b4deab7c7cc09ad8b936d633c600b9fb4e274801efeaaf94e5c860b4
2020-01-01 01:26:05 +00:00
drh
51676fab72 Remove an incorrect assert() statement. Ticket [46fcd700b855e6d1]
FossilOrigin-Name: eca7ec9cda4606c4104bcb8da315070b615713db9f3444579c6a3e96b0aad02f
2019-12-31 23:17:35 +00:00
drh
b945bcdaf1 Experimental branch with new sqlite3_db_config() options that could possible
enhance security for applications reading potentially compromised database
files.

FossilOrigin-Name: 96a2db2612f2e47bbec0e374a242820c88f03c42ccbf8467abccaef41469bae2
2019-12-31 22:52:10 +00:00
drh
64de2a5f7b Also set the SQLITE_DIRECTONLY flag on the load_extension() function.
FossilOrigin-Name: 3bd095a53119c368fe30e539983588b27957203344cf427405b9a64784b8eba7
2019-12-31 18:39:23 +00:00
drh
1e732787da Set the SQLITE_DIRECTONLY flag on the fts3_tokenizer() function of FTS3,
thus preventing that function from being called from within a trigger or
view.

FossilOrigin-Name: f3171dc22e4d3a40ca17fe609391d92fc6a997b775bfefa5947aec69c889aa73
2019-12-31 18:12:36 +00:00
drh
cf014f6cbd Refactor names. Use "small" instead of "mini" to describe the smaller
of the two lookaside memory allocation sizes.

FossilOrigin-Name: 88d244983854cdc1a369c5df09ae00f1098784db768ba4e17b963d187dcb1009
2019-12-31 15:12:34 +00:00
drh
5f6a2ed7f2 Merge recent enhancements from trunk.
FossilOrigin-Name: 39d55579376906f212271ce9b2d367e3ad029fb173f22c7253312b467970208a
2019-12-31 14:49:10 +00:00
drh
02ff747bc0 The OP_ResultRow opcode releases the SCopy dependences on all its registers,
as the values in those registers will not be reused.

FossilOrigin-Name: 1dc83c5d54ca2890112e735e336c209adb8d067d2f647e9f8ae5d58f84a52461
2019-12-31 12:18:24 +00:00
drh
70d6b8327a Back out the NEVER() from check-in [40d10e7aad5b8992] because it is reachable
after all. Ticket [892575cdba4e1e36]

FossilOrigin-Name: f481636f1a0333c6e98906e5d4433bf1d046380bc29c760e8e7e2c2b3530b956
2019-12-30 23:50:19 +00:00
drh
0b973c8bff Add an ALWAYS() to a conditional which is apparently always true.
FossilOrigin-Name: ea44c607b8038999a6bda4d761d95056aa4058d6c2891b7eee0715a50e703490
2019-12-30 23:41:59 +00:00
drh
2b173b93fc Put a NEVER() on a defensive branch.
FossilOrigin-Name: 40d10e7aad5b899206e45d1f8606470a90a07049e15d94c3811cfe695f3a402e
2019-12-30 20:42:53 +00:00
drh
8d95ed789e Fix a typo in a comment. No changes to code.
FossilOrigin-Name: d4813a8d813f234e819f8ebefbd3ff96d3d69593cc7d716cf0ad6c1a126da827
2019-12-30 20:42:17 +00:00
dan
9d41af23a4 Do not use HIDDEN columns for NATURAL joins. Fix for [7c0e06b16].
FossilOrigin-Name: ab09ef427181130be09a087b7e572ad4cfb6b3e1b459769ee5ebf046b3ead682
2019-12-30 14:32:27 +00:00
dan
2b6e670f73 In ALTER TABLE, rename columns and tables in expressions that are optimized out by the "AND 0" optimization. Doing this also fixes an otherwise harmless assert() failure.
FossilOrigin-Name: a9e0354c992b0287608ddd18fd35fe7e6102a8f293d6e6e1b3488644bcda8168
2019-12-30 06:55:31 +00:00
drh
7b14b65d20 Do not allow triggers that run as part of REPLACE conflict resolution
during an UPDATE to modify the the table being updated.  Otherwise, those
triggers might delete content out from under the update operation, leading
to all kinds of problems.  Ticket [314cc133e5ada126]

FossilOrigin-Name: db4b7e1dc399c1f16b827ac087aa37c0815f4b2f41f1ffad59963eead2ab5562
2019-12-29 22:08:20 +00:00
drh
be3da24134 Add the OP_FinishSeek opcode which completes an OP_DeferredSeek if the seek
has not already completed.  Also add the sqlite3WhereUsesDeferredSeek()
interface to the query planner.  The UPDATE implementation adds an
OP_FinishSeek before running the final OP_Insert if one is needed.
Ticket [ec8abb025e78f40c] and also an assertion fault reported by Yongheng.

FossilOrigin-Name: 21ef6e99331210b80fa7c71b4f02e8f768a748d01aef884368af2f6b51a067e0
2019-12-29 00:52:41 +00:00
dan
997d7434b7 Do not attempt to flatten compound sub-queries in a FROM clause into the parent if any component of the sub-query uses a window function.
FossilOrigin-Name: eeb76f621de2f930a548db0fbb9fe25b4479b73581826b8dfa2e63cd1f1ab783
2019-12-28 18:25:51 +00:00
dan
4adb1d0000 Change an assert() in where.c to a testcase() macro, since the condition may be false. This was a problem with the assert() only, there is no bug in release builds that omit assert().
FossilOrigin-Name: 82be135dee7ccfde5f8a67f3621b7ced449dce89bae9cadf025154a4de848c11
2019-12-28 18:08:39 +00:00
drh
a4b2df5ce2 Disable early coding of transitive constraints at the end of each loop in
the WHERE clause processing if the loop being coded is for a LEFT JOIN,
even if the loop is part of an OR-clause optimization for virtual tables.
Test cases in TH3.

FossilOrigin-Name: 9421b442cad9858ec21050c106aa935a1c0723ab08ef9a867a79638b040b6e68
2019-12-28 16:20:23 +00:00
dan
51f2b1719c Fix an instance where the planner might choose to use the OR-optimization when it adds no benefit. The same quirk causes an assert() to fail. This is not a bug in released versions - without the assert() the library still gets the right answer, it just does so less efficiently than it should.
FossilOrigin-Name: f4bed1d7af8a94c6facd567dec5afae8865a5ad76b8834493099e5e30bed1132
2019-12-28 15:24:02 +00:00
drh
f1bb31e219 Further improvements to .wheretrace during loop code generation.
FossilOrigin-Name: c4d5b75c9381255ec8d9a284eedb6b27be46ca868cae5985cf8a5769b15290c3
2019-12-28 14:33:26 +00:00
drh
118efd1626 New enhancements to .wheretrace. The 0x20000 flag shows the WHERE clause
before and after coding each loop.  The 0x800 flag shows status at the start
and at the end of each loop.  An extra "C" tag is shown on coded terms.

FossilOrigin-Name: 59cc46e5a6d8dbb030f27716ad5446ecccf81cf0cfff95338b9133777f2059e7
2019-12-28 14:07:22 +00:00
drh
cacdf20771 Expose some of the Where data structure debug printing routines to the
entire WHERE-clause processing module.

FossilOrigin-Name: 85e76887761b5d7e290fb2bac7f9121648f79d67fdd92f624d81632f28620518
2019-12-28 13:39:47 +00:00
drh
29368eabc5 Add the --enable-all option to the main configure script as a short-hand
to enable FTS4, FTS5, Geopoly/Rtree, JSON, and Sessions.  In the
amalgamation-autoconf, the --enable-rtree option (which is enabled by
default) also now activates Geopoly.

FossilOrigin-Name: 52ea0672d7494346c636cd7b05ca42161eb3b07d9378fa9959be9a11de87dbbb
2019-12-28 13:17:11 +00:00
drh
cfcf4de4a6 Simplifications to the initialization of the sqlite3_index_info structure
that is used to communicate with virtual table modules.  Avoid adding
unused constraints to the sqlite3_index_info structure.  Extra constraints
are harmless, but might be confusing to people trying to understand the code.

FossilOrigin-Name: 5e6357fc953a955d8ebb5c1fcd72e04e4ae5e8bf5941810015c2fbc50de70535
2019-12-28 13:01:52 +00:00
drh
6411d656aa If the ".wheretrace 0x10000" bit is set, print WhereTerm.prereqAll
and .prereqRight fields in the WhereTerm trace output.

FossilOrigin-Name: a4f330b133a36356681dce7d2a65d8ab792620494d6cd4ef4934a97cf3a8e6fc
2019-12-28 12:33:35 +00:00
drh
7505123fe5 Two new test cases added to test/fuzzdata8.db.
FossilOrigin-Name: 1be2c18f4021e1d0b8412ecb68a599475c717dd97c7db209fc4203358957fd70
2019-12-28 11:55:44 +00:00
dan
409f3370af Second attempt to fix a problem with unwinding the WITH stack of the Parse object following an error.
FossilOrigin-Name: 315d1f1a503e8c186739658c85b92fa3d12514e5baaa26925c85664b5e85d1c0
2019-12-28 09:08:27 +00:00
dan
43526f4ada Merge latest trunk changes with this branch.
FossilOrigin-Name: d693be375380fbfca426999a77eeecb8453fa77b77f608bfe266945dee1da41d
2019-12-28 08:33:46 +00:00
dan
5d59102a91 Fix an assert() failure in altertable3-22.4.
FossilOrigin-Name: c566a91d5c4290b0a491a01e85bf8f9fbebf2910e0d478bafc2d22da7f749cae
2019-12-28 08:26:47 +00:00
drh
9a1f2e4853 Fix a faulty assert() associated with query search limiting query plans.
FossilOrigin-Name: 0d743585c242ebd898b232f42937a2306752aaed0a6756705e3ef1cf7593aa97
2019-12-28 03:55:50 +00:00
drh
b97f3532f5 Convert an assert() back into a conditional. The conditional was converted
into an assert() by check-in [6ae4ad6ebee4db88] (2009-05-28) because we were
unable to find a test case for it.  Yongheng's fuzzer just now
found that test case.

FossilOrigin-Name: 4d0b9109f7a5312d4e136395e08b11dad64d746bc106ad44d47675e5b1dcb4ef
2019-12-28 02:40:49 +00:00
drh
d9670abb58 When an INSERT is receiving content from a SELECT, run an OP_ReleaseReg opcode
at the top of each iteration of the loop in order to prevent spurious
OP_SCopy misuse complaints.  Ticket [de4b04149b9fdeae]

FossilOrigin-Name: 6afadd3b3a40b0ef29fd14fb24c2a4b9479483e5f8b9125ce02d8daae662207f
2019-12-28 01:52:46 +00:00
drh
ad5f157791 Recompute the values for all generated columns after
NOT NULL ON CONFLICT REPLACE constraints fire.
Tickets [37823501c68a09f9] and [5fbc159eeb092130].

FossilOrigin-Name: 4cc12c18860bc4801a407cf45e88e23d3d40391f01a461fbac2cac5f102100e1
2019-12-28 00:36:51 +00:00
dan
a6c1a71cde Do not attempt to unwind the WITH stack in the Parse object following an error. This fixes a separate case to [de6e6d68].
FossilOrigin-Name: d29edef93451cc67a5d69c1cce1b1832d9ca8fff1f600afdd51338b74d077b92
2019-12-27 20:54:42 +00:00
dan
b4b3630657 Remove a NEVER() that is no longer true. Fix for [36ffedcb9].
FossilOrigin-Name: 597896ed0ae9e2960a8f39576bd7f77a11dccc1da84b6a44ebb5c38d90ebc330
2019-12-27 20:06:32 +00:00
dan
e3735bf466 Fix a problem involving window function aliases being referenced from sub-selects.
FossilOrigin-Name: e3b5fc05c00fc58be7a7c94ce1d97a5b05113f39aba03df64aab08364f85616b
2019-12-27 19:46:07 +00:00
drh
6473ba95a0 Add a missing "ifcapable rtree {...}" line to the window1.test test module.
FossilOrigin-Name: 4e6fbb1a5100fe29209bcf668fbecf3a733034b84925265d8a15b0a84baf6cf0
2019-12-27 18:15:04 +00:00
dan
431704375e Fix a problem with window functions in aggregate queries that do not have GROUP BY clauses.
FossilOrigin-Name: 99609786f485653464d1caef1d207ae299d28c925bff3e8e94891759b4765dcc
2019-12-27 16:25:56 +00:00
dan
d8d2fb9222 Do not mistake constant integers in a PARTITION BY expression for references to ORDER BY style references to values returned by the SELECT statement.
FossilOrigin-Name: 45c64d39d5afed7fdc6b1de19408559740d1fba1f5e0269ab68b132366a289e4
2019-12-27 15:31:47 +00:00
drh
09bee5743d Follow-up to check-in [c8c6dd0e6582ec91] - change the xAccess() method to
return true if the file exists and it is anything other than a regular file,
or if it is a regular file with a non-zero file size.

FossilOrigin-Name: 8a39803ef8db4d8cb0d231e66299525fad4e61266ca29b3704aebb88df1c745b
2019-12-27 13:30:46 +00:00
dan
5e484cb3eb When determining if an aggregate within a sub-query should be processed as part of the sub-query or an outer query, consider any FILTER clause in the same way as the arguments to the aggregate.
FossilOrigin-Name: 1ffc045d2bbeeda9c13a3a3585538ff6434fc852b0ae6679d3c8b9f606bf92e6
2019-12-27 08:57:08 +00:00
drh
fce8165ec6 Ensure that the Pager.changeCountDone flag is cleared whenever dropping
the write lock, even when transitioning from EXCLUSIVE locking mode into
NORMAL locking mode while in WAL mode.  Ticket [fb3b3024ea238d5c].

FossilOrigin-Name: 846b1de6e5a9e418f225273dc033234c64c116fcd89c8261522b4902c248451f
2019-12-27 01:50:46 +00:00
drh
8d7f44c03a Fix buffer underflows in the zipfile extension associated with zero-length
or NULL filename in the ZIP archive.  But report on the mailing list by
Yongheng and Rui.

FossilOrigin-Name: 465a15c5c2077011befa854a77f9d295bb751ef20b7d2937ac0ba47cc84587c9
2019-12-27 00:19:53 +00:00
drh
fe2a3f1d24 If an UPSERT can cause an Abort due to a constraint failure, make sure
the query planner knows this.  Ticket [7c13db5c3bf74001].

FossilOrigin-Name: f14ce948662f3445a06d84d4f32d9b81143e0cffaf773d8aa4d3a609bfb9682b
2019-12-26 23:40:33 +00:00
drh
d3ee3ad12f An UPDATE of a table that is indexed by a constant virtual column that uses
the one-pass optimization might cause the table seek to be omitted before
reaching row DELETE/INSERT.  Fix this by coding an extra OP_Column in that
circumstance.  Ticket [ec8abb025e78f40c]

FossilOrigin-Name: e54560495926fbb8a2ce829c677a2dd0066e46b7a8d4ada9d8a34a3426959836
2019-12-26 23:16:18 +00:00
dan
e752040c09 Fix an assert() in fts5 that could fail if an xSavepoint() call on another vtab fails.
FossilOrigin-Name: a5d7f5d24a239f729de0b8aa5becf5af35ba87160565ee0713c335b8d1bbf12d
2019-12-26 14:36:31 +00:00
drh
fa53284777 Makefile.in fix so that it works on systems that require a .EXE suffix
on executables.

FossilOrigin-Name: f482a4cdfa768941e22c399de8ec29a55e729529eeae86d3832077ad1bef22f3
2019-12-26 01:10:17 +00:00
drh
0bb7af44a3 Add two new fuzzer test cases from dbsqlfuzz.
FossilOrigin-Name: f8d5586a8ceca985dcb2d63d0fbad9e271e9e1664720ee698d4947acd5dcc543
2019-12-26 01:02:02 +00:00
drh
96e8eebf96 In the xAccess() method of the unix VFS, return true if the named object
is a directory, regardless of what stat() reports as the st_size for the
object.  Different filesystems report st_size differently for directories.
Problem reported on the mailing list by Stefan Brüns.

FossilOrigin-Name: c8c6dd0e6582ec9103d007b294c42bb1820be1fa7dab85d873b04e0b90571626
2019-12-26 00:56:50 +00:00
drh
0b12613a00 Fix an FTS3 test case that depends on the ICU extension so that it only
runs if SQLite is compiled with ICU.

FossilOrigin-Name: 19c6240bdbb022b2af463e59d873280d0f2385bf30e22b9aad5fc9677a99f251
2019-12-26 00:54:39 +00:00
drh
aaa5ba0609 Fix an incorrect assert() added by check-in [fa58aad48a788802].
Problem found by dbsqlfuzz.

FossilOrigin-Name: a17b29f08c888301911c35096899f10d24192c8ecec467cddde5401b6bd1903f
2019-12-26 00:53:43 +00:00
drh
e86f3402ac Disables the optimization that tries to pull the value of an expression
from an index on that expression if the expression is a constant.

FossilOrigin-Name: e5fd8b50500f9225e435ef5afee98e3c2cccd22785f99c718d7e6c9b5b653c56
2019-12-26 00:20:56 +00:00
drh
a9ebfe2030 When the sqlite3WindowRewrite() routine detects and error, have it convert
the SELECT statement into just "SELECT null" so that it does not leave the
parse tree in a goofy state that can cause problems with subsequent code
before the stack has a chance to unwind and report the error.
Ticket [d87336c81c7d0873]

FossilOrigin-Name: fa58aad48a788802b13a819e49f9b8787f713bbe395c46c7295e821c52c81738
2019-12-25 23:54:21 +00:00
drh
b44fec68a5 Fix a minor performance regression from check-in [401c9d30e06191d9]
FossilOrigin-Name: 76f54ee86777cbf530654323c953388ef64d0608516722d2522be6c859fa1382
2019-12-24 21:42:22 +00:00
drh
c7a5ff45b9 Backout the early VTable cursor close change from yesterday, as Yongheng and
Rui have found a test case for which it fails.  The new test case is added
to fuzzcheck.

FossilOrigin-Name: ddb10f0374e66886d0681937b14cf0b4f100f03d3955b45b6c508dc6d9e36976
2019-12-24 21:01:37 +00:00
dan
4fcce747e2 Fix a problem causing fts5 integrity-check failures if numeric values are inserted into a table within a utf-16 database. Fix for [752fdbf6].
FossilOrigin-Name: bae060f382e4386c0793db4aa280fe9cd4893307d17a1801a17218ae4dc031c2
2019-12-24 20:51:01 +00:00
drh
a194d3152c Make the zipfile() extension function more robust against zero-length filenames.
FossilOrigin-Name: b9c2005f0291d58d7f3bfd4a2286eb6563e9c9433519c3329035f325fc723445
2019-12-24 18:53:13 +00:00
dan
3fee9de239 Fix another case where malformed utf-8 was being mishandled in fts5. Fix for [df46a6f3].
FossilOrigin-Name: 1c0a05b09a97e6e2e9b11c31ed6ec7e6484686614b587ebfd0cfe27d973ba461
2019-12-24 16:20:05 +00:00
dan
84d17bdaa7 Fix an assert() added as part of commit [a11b393dc] that can fail if fts5 database records are corrupt.
FossilOrigin-Name: 4630c1ec013a4c2e54a34c9a64b2c803ac3912450de660497eb34ee21c91f426
2019-12-24 15:35:53 +00:00
drh
4eac5f04ab Extra defense against problems following an OOM. dbsqlfuzz find. Also
import the latest dbsqlfuzz test cases.

FossilOrigin-Name: 0a70f5ddaf3567f335cc0fd0fcd5303e2afb5e38a6388faddf5cab1f2a74e3dd
2019-12-24 15:01:17 +00:00
dan
c26e78d275 Fix a spurious report of corruption that could be made by the fts5 integrity-check in SQLITE_DEBUG builds if the fts5 index contains malformed utf text.
FossilOrigin-Name: a11b393dc2c882cf0b3c47c3405bf43ca1d6459605bd39cccce4d32da653a72d
2019-12-24 14:27:03 +00:00
drh
34da2a4806 Convert an ALWAYS() into an assert() with an extra error term.
Dbsqlfuzz find, with test case in TH3.

FossilOrigin-Name: b473ad35c5ce355853e1805a5c0658bda1500775f22f59c6b6759ae990e65aca
2019-12-24 13:41:33 +00:00
drh
22c04f8199 Allow comparison operators of a register against itself.
Ticket [188f912b51cd802a],

FossilOrigin-Name: 401c9d30e06191d938503aae024bc453d960fa64dc812ed86c661f94533247fd
2019-12-24 01:53:05 +00:00
drh
1e490c4ca6 Test case for the zipfile-extension bug fix of the previous check-in.
FossilOrigin-Name: bc8bfc7fcdf33f6855584e10e9260073430517ff3268cf0c7988dcc4cd785391
2019-12-23 21:11:15 +00:00
drh
d8f2d46cbc Fix the zipfile() function in the zipfile extension so that it is able to
deal with goofy filenames that contain embedded zeros.

FossilOrigin-Name: cc0fb00a128fd0773db5ff7891f7aa577a3671d570166d2cbb30df922344adcf
2019-12-23 21:04:33 +00:00
drh
5f0dfc00de Thoroughly reset the rtree cursor at the start of each VFilter operation,
including clearing its cache.  This prevents left over pages in the cache
which can cause problems on shutdown after a LEFT JOIN.
Ticket [5eadca17c4dde90c]

FossilOrigin-Name: 4c50afafce8416369f89477ba7fe7d9b047399a5ee5754c73d0e67bbea8d877c
2019-12-23 20:41:39 +00:00
drh
192cf36de6 Remove an extra deflateInit2() call accidently left in
check-in [f5ee30426e8876e7]

FossilOrigin-Name: 953e6aa6d9ca09e549c88bc728c322fabdcef581f3b4a7763d95488dddbbd6a5
2019-12-23 20:07:28 +00:00
drh
e2478dfa43 Do an early close of virtual table cursors to avoid unnecessary cursor
contention in UPDATE for some virtual table implementations.
Ticket [56a74875be799b85]

FossilOrigin-Name: eb95dac7f6482c36853a23234c5ce7af37c7beed8e3675d6a49c4d3a8307e076
2019-12-23 19:28:34 +00:00
drh
a2d50283db Early detection of database corruption in balance_deeper().
FossilOrigin-Name: 61c2233654158e65a3d3baeea947903a919a569fcc4a5b342b2e9a68cec1b6f3
2019-12-23 18:02:15 +00:00
dan
1d24a53125 Fix a case in which SQLite could fail to identify "x BETWEEN ? AND ?" being true as implying that x is not null. Ticket [dfd66334].
FossilOrigin-Name: 2f17974912ec5e99089dc0da803e7ff1bf033377a49762d2689a812c005f2641
2019-12-23 15:17:11 +00:00
dan
2811ea6be7 For expressions like (x, y) IN (SELECT ...) where the SELECT uses window-functions, require that all columns on the LHS be indexed before an index can be used. Fix for [d9ed4ebe].
FossilOrigin-Name: 0b1dbd60f5db3abe2097dbc0b6de9671685ca5eaf7d3fc8e3f87ff5065a9d114
2019-12-23 14:20:46 +00:00
drh
7edce5ecc0 Fix a shift-overflow problem in yesterday's check-in [36fdeb4f0a66970a]
that OSSFuzz helpfully discovered overnight.  Thanks Google.

FossilOrigin-Name: bff38e2b5318ed032aaf1d350903c3494b4531f2dc59a6997144ec8e23defef4
2019-12-23 13:24:34 +00:00
drh
0af6ddd3ca Fix the OP_Cast operator so that when casting to TEXT, it always leaves
the result in the encoding of the database.  Ticket [0911b5d161b039c6].
Test cases in TH3.

FossilOrigin-Name: f347744e0d576f0250c29259cca755e57afded8956224114c01603c1bca5b3a4
2019-12-23 03:37:46 +00:00
drh
3d8e7a2f97 Change the assert() back into a testcase(). See also check-ins
[9ab985a9c8160b90] and [ddb17d92df194337] and other check-ins that those
reference.  Fix for ticket [9d708e474201c001]

FossilOrigin-Name: 2c44c73499154bc57634a54cb743642d0aacc93a1336fbb8bb3eb5dbbf616357
2019-12-23 02:43:52 +00:00
drh
13d7950267 Enhance the sqlite3VdbeMemAboutToChange() shallow-copy validation mechanism
by adding the new OP_ReleaseReg opcode to tell MemAboutToChange() that a
range of registers is no longer needed so that the source register can be
freely changed.  This is a change to debugging and test builds only and
does not impact release builds.  Fix for ticket
[c62c5e58524b204d] and [5ad2aa6921faa1ee].  The previous fix to ticket
[5ad2aa6921faa1ee] is backed out by this change since this change is a better
fix.

FossilOrigin-Name: 36fdeb4f0a66970a35de688b617f90899c89cfdfab659f864df99aa7ebf854ea
2019-12-23 02:18:49 +00:00
drh
4799488e16 Change the code generator for the IN operator so that it avoids creating
OP_Eq and OP_Ne opcode with the same P1 and P3 arguments.  This enables us
to back out check-in [ddb17d92df194337] and also fix ticket [188f912b51cd802].

FossilOrigin-Name: 9ab985a9c8160b905730678f40ed440a246cdec549c798bafefaed5abbc0437f
2019-12-22 23:48:36 +00:00
drh
5d762b2d1d Make a hard copy of strings in constraint checks prior to applying
OP_RealAffinity, to avoid problems with a pointer accounting assert.
This change is not strictly necessary - the correct answer is obtained
without it and no UB occurs - however the pointer accounting asserts are
useful to prevent other problems so it is a simple matter to bring this
piece into compliance.  Ticket [5ad2aa6921faa1ee]

FossilOrigin-Name: 89a9dad6330270a4c3b962f86a208088d2ea9883c7d291351a77f058e0ed8b0c
2019-12-22 20:29:25 +00:00
drh
6e827fa27d When constructing the virtual MATCH term of the WHERE clause for a virtual
table that is in a LEFT JOIN, be sure to set the correct Expr.iRightJoinTable
value.  This value does not appear to ever be used, except inside of a single
assert().  But it is good to set it correctly, nevertheless.  This fixes
ticket [7929c1efb2d67e98], which as far as I can tell is completely harmless.

FossilOrigin-Name: ef604882a275d3d5ebd4d5a08e3fe43e148f169b7d5c3a81464fbe7f54f3582a
2019-12-22 20:03:29 +00:00
drh
d262c2db8f In the WHERE clause debugging output (the .wheretrace output) show the
parent index of any WhereTerm that is a child.

FossilOrigin-Name: 7fc733328c5914c747e048c830522ec13e433c0a86388bae47b198a3e220c6c2
2019-12-22 19:41:12 +00:00
drh
6c1c85ca48 Fix to the optimization of check-in [a47efb7c8520a011] that reads the values
of expressions used in an index-on-expression directly from the index rather
than recomputing the value.  If the expression has a top-level COLLATE or
unlikely() operator, be sure to clear the corresponding flags prior to
converting it into a TK_COLUMN expression.  Failure to do this is most likely
harmless in production, but might cause an assertion fault in debugging builds.
Ticket [b0cb8aff561a6dcd].  Test cases in TH3.

FossilOrigin-Name: 56539e1c132632c075efc217ad5951a35e4459605ac128914aec3a7be1e25718
2019-12-22 18:55:04 +00:00
drh
db1954be0a Back out the asserts of check-ins [a500893b6f64aced] and [d9c9fe9f5ad3fc91]
as ticket [1b06916e01c82b66] demonstrates a case that refutes them.

FossilOrigin-Name: ddb17d92df194337a103c561ef46ced00db5e67e4551e82de7cb5ad7f457dd5f
2019-12-22 18:23:30 +00:00
drh
9524a7ea9f When parsing a CREATE TABLE from the sqlite_master table, delete the CHECK
constraints if there are any errors, since there might otherwise be attempts
to use those CHECK constraints if PRAGMA writable_schema=ON is set.
This undoes the fix in check-in [ea721b34477ab8b4] for a more general
solution.

FossilOrigin-Name: a982e6434cd66bfbe94d455f538bcbc4360b91572062d92acae6b77e9560e65d
2019-12-22 18:06:49 +00:00
dan
69843342de Ensure sqlite3WindowRewrite() is called on a SELECT statement before any terms aremoved from it as part of IN() clause processing. Fix for [f00d096ca].
FossilOrigin-Name: 8c856404b4e98d295449a4e89a41495dc007319a8e9c35c1a763718d7c5f67e8
2019-12-22 17:32:25 +00:00
dan
7a1d7c3968 Fix "PRAGMA data_version" so that it works the same way with locking_mode=PERSIST and journal_mode=PERSIST configured. Fix for 7a458c2a5f.
FossilOrigin-Name: 45748e2db028ffbda5d3e747493721a5a89af3fbc06823081a2f27f570e40e73
2019-12-22 14:29:55 +00:00
dan
e88af0179e Fix a spurious report of corruption from the fts3/4 integrity-check triggered by using the languageid option.
FossilOrigin-Name: 70815e273f511481c310dc33b3b49079901d891078fad49b663fbce06c77ecc2
2019-12-21 20:43:34 +00:00
drh
f4f31df02d When creating a new virtual table, ensure that the OP_ParseSchema opcode
processes the correct entry in the sqlite_master table even if there is
a second entry with the same name and table values due to database corruption
and the use of writable_schema=ON.  Dbsqlfuzz find.

FossilOrigin-Name: 4dbb6e1cb094f3428c74ea8bdd86ab63341fecce978a062968ca01423f382e90
2019-12-21 19:37:09 +00:00
drh
b0cbcd0edf When a corrupt schema is loaded using writable_schema=ON, the CHECK constraints
(or other expressions in the table definition) might not be fully resolved.
Ensure that the code generator can deal with this if the table is subsequently
used in a DML statement.  dbsqlfuzz find.

FossilOrigin-Name: ea721b34477ab8b49d182352c4bc198245933b850e9b6248b4f97600e80bb44b
2019-12-21 14:09:30 +00:00
drh
ed0c34857a Do not try to access a generated column through an index if the collating
sequence for the generated column is non-standard.
Part 2 of ticket [e0a8120553f4b082]

FossilOrigin-Name: 056bb8dcbdc45989c5c6e86d2966200062e3c01c382ec52aae37c828104b4496
2019-12-20 22:46:41 +00:00
drh
67b9ba1732 Apply real affinity to generated columns of type REAL that are extract from
an index.  Ticket [e0a8120553f4b082]

FossilOrigin-Name: 728ad39e3bd07a2503a95c68ed5bbc3f28fd97551d59f12a5fab25dc68227e99
2019-12-20 20:45:02 +00:00
drh
a513e591ae Debugging enhancment: Show the Expr.y.pTab pointer on TK_COLUMN nodes of
an expression tree in the treeview.

FossilOrigin-Name: 64154ac450e4366d18e7e867841877a69c1f978d3ba9b8754cc133248966731d
2019-12-20 20:08:56 +00:00
dan
879f1a1ea6 Fix a bad interaction between RBU and [df51ae19].
FossilOrigin-Name: 0b9d8a1202c4220fd2ef299b6194533c1bf4018a0cd2d13da7e22c1a7de05ffa
2019-12-20 20:03:21 +00:00
dan
42ae633ab9 Fix two more cases in fts5 where sqlite3_value_bytes() was being called before sqlite3_value_text(). Fix for e431c355.
FossilOrigin-Name: a1ba9a37d7a68a6d31f8197c6350589ebe6a12f4e3c193a178dd7ead8bcd565a
2019-12-20 19:41:01 +00:00
mistachkin
e99cb2da5f Export the public RBU entry points from the Win32 DLL.
FossilOrigin-Name: e62d1791f428b7a9bb14a59483f12d8ee08afbf4061a5e3be8f64787444301e7
2019-12-20 17:41:15 +00:00
drh
5d73272340 Debugging improvement: when tracing the VDBE, output the register value for
OP_Cast after the cast is completed.

FossilOrigin-Name: dc5f1d282d1e75f8a3791b0c95cb8f143b2a956323cb6c889d76d20db7f89257
2019-12-20 17:25:10 +00:00
drh
8cc8feae7e When computing dependencies on WHERE-clause terms, be sure to take into
account the FILTER clause of aggregate functions.  Problem reported by
Manuel Rigger.

FossilOrigin-Name: 3cc2b5709e66ef605c3b85ed13ae6cc9c3090e864ebc18859db36284b8f715b6
2019-12-20 15:35:56 +00:00
drh
8c7715d1cc Improved assert() statements on the OP_Column opcode.
FossilOrigin-Name: c538601e4c979ee59f18d19e6eb6296cebfa580fb029a18d5a3f0dd9393acb75
2019-12-20 14:37:56 +00:00
drh
40e9c8328e Load new dbsqlfuzz test cases into test/fuzzdata8.db.
FossilOrigin-Name: 01aeeb5c4c70a0f19651448e94ad5c6810cab3d6957b5bc7a9b4b8e0b887f3de
2019-12-20 14:24:26 +00:00
dan
394aa710f2 Fix a potential problem with ALTER TABLE commands on schemas that contains a triggers or view featuring a sub-query that uses an ON clause with a join that is not a LEFT JOIN.
FossilOrigin-Name: 365dd8b663d5a28af33556b2b3820c6b5482114ef741a1d82b55c6e154f3043a
2019-12-20 14:18:29 +00:00
drh
b2ab3dcff0 Fix harmless compiler warnings.
FossilOrigin-Name: 2bbd014c900e0d71fd30ec647739b82c5dc3aa237a0203f5a1db50593dae199e
2019-12-20 14:08:34 +00:00
dan
73b21382d4 Ensure fts5 consistently calls sqlite3_value_text() before sqlite3_value_bytes(). This matters when storing blobs in fts5 tables within utf-16 databases. Fix for [cf36cb4e02].
FossilOrigin-Name: c16305eba0eb14368f2631b9a82b7eb4483c93f3b31257ee7c33f9b00c344379
2019-12-20 13:24:11 +00:00
drh
1548d5276f Do not continue an ALTER TABLE tree walk of a subquery if a prior error
is seen in the tree.  Report the problem immediately, without continuing.

FossilOrigin-Name: 01ca865f31c0c817ede7f357401ef76cf311ae662397908464f53e1c147f5b6b
2019-12-20 12:55:21 +00:00
drh
0e5ce8029d Fix an assert() in btree.c that can fail if an INSERT is attempted on
a corrupted database while in PRAGMA writable_schema=ON.

FossilOrigin-Name: 07beb3629e648e7feae4e786191514339ac1d8f6ba5bb6e7cc8a04bc1f1cd6ab
2019-12-20 12:33:17 +00:00
drh
8428b3b437 Continuation of [e2bddcd4c55ba3cb]: Add another spot where it is necessary
to abort early due to prior errors in sqlite3WindowRewrite().

FossilOrigin-Name: cba2a2a44cdf138a629109bb0ad088ed4ef67fc66bed3e0373554681a39615d2
2019-12-19 22:08:19 +00:00
drh
6ad0e25fa4 Fix the regexp extension so that it correctly translates all over-length
3-byte UTF8 sequences into 0xfffd.

FossilOrigin-Name: 3d4c0bf8904135fa68c75801bfa738715cacc3b19dc8ad6ef550b11798d4b121
2019-12-19 21:11:48 +00:00
drh
8654186b02 When an error occurs while rewriting the parser tree for window functions
in the sqlite3WindowRewrite() routine, make sure that pParse->nErr is set,
and make sure that this shuts down any subsequent code generation that might
depend on the transformations that were implemented.  This fixes a problem
discovered by the Yongheng and Rui fuzzer.

FossilOrigin-Name: e2bddcd4c55ba3cbe0130332679ff4b048630d0ced9a8899982edb5a3569ba7f
2019-12-19 20:37:32 +00:00
drh
34ab941e5b Detect the invalid use of NULLS LAST on an INTEGER PRIMARY KEY definition
of a WITHOUT ROWID table.

FossilOrigin-Name: 4417c5bf0aabb34ed174f01afd981c924ae965a42128719d8d6735536631d12f
2019-12-19 17:42:27 +00:00
drh
54d501092d Fix the zipfile extension so that INSERT works even if the pathname of
the file being inserted is a NULL.  Bug discovered by the
Yongheng and Rui fuzzer.

FossilOrigin-Name: a80f84b511231204658304226de3e075a55afc2e3f39ac063716f7a57f585c06
2019-12-19 15:15:40 +00:00
drh
59c5679691 Fix incorrect SQL generated by the Lemon change of the previous check-in.
FossilOrigin-Name: fccfb8a9ed3c1df9f23762bb8df6fdf36a21118899e3fae41f451169a5f2c08e
2019-12-19 13:17:07 +00:00
drh
3e5f7fef33 Modify the parse.sql output file from Lemon so that the RULE table contains
a column with the complete text of the rule.

FossilOrigin-Name: 329cbb372d4d77f774f01a87d104c40ef42d713afbe76195b65f5ca205c5ea7b
2019-12-19 12:29:31 +00:00
drh
c29af653e6 Change an unreachable testcase() into an assert()
FossilOrigin-Name: 062e00c4d7e30155299339eaefe6cbe01953894baebf0af6d7ab3295b7436eb7
2019-12-18 21:22:40 +00:00
drh
396afe6f6a Continue to back away from the LEFT JOIN optimization of check-in [41c27bc0ff1d3135]
by disallowing query flattening if the outer query is DISTINCT.  Without this fix,
if an index scan is run on the table within the view on the right-hand side of the
LEFT JOIN, stale result registers might be accessed yielding incorrect results,
and/or an OP_IfNullRow opcode might be invoked on the un-opened table, resulting
in a NULL-pointer dereference.  This problem was found by the Yongheng and Rui fuzzer.

FossilOrigin-Name: 862974312edf00e9d1068115d1a39b7235b7db68b6d86b81d38a12f025a4748e
2019-12-18 20:51:58 +00:00
drh
6e1c45ef2e Add the --vdbe-debug option to fuzzcheck.
FossilOrigin-Name: 289158aa24b066c453d2bce4bc2dead1c56fb0b23c3f7c4810b34b13627cef34
2019-12-18 13:42:04 +00:00
drh
a7648f02e0 Enhancements to fuzzcheck on unix so that it captures signals and prints
the current test file and test number prior to terminating.

FossilOrigin-Name: ae7cbb246bff3717c283869ccf27ce83611422f3801176819465a8d96f6481bf
2019-12-18 13:02:18 +00:00
drh
8c72afaf33 Add a test case for fix in check-in [1ca0bd982ab1183b]
FossilOrigin-Name: 519864da8bb671941a64bf333c2086ad9a068b5f85759e7abd368f0706d3aefd
2019-12-18 09:17:55 +00:00
drh
94649b6159 Correctly unwind the savepoint stack if the database goes read-only in
the middle of a savepoint.

FossilOrigin-Name: a96d02b4ab8c70cc20b322e4fa3a4b8814f05c51f5d8b071ec9d69e7379f3ea5
2019-12-18 02:12:04 +00:00
drh
50efa58600 Remove an assert() in the code generator that can fail due to an invalid
INSERT statement.  The same assert() appears again in the VDBE and will fire
there if the problem persists in an SQL statement that does not contain
errors.  Gramfuzz find.

FossilOrigin-Name: 9bdd57cb9ad8ac1f4a0f1a3942d94ca5193109eeb1975343c4f0c7abf7135946
2019-12-18 01:31:21 +00:00
drh
75e95e1fcd When processing constant integer values in ORDER BY clauses of window
definitions (see check-in [7e4809eadfe99ebf]) be sure to fully disable
the constant value to avoid an invalid pointer dereference if the expression
is ever duplicated. This fixes a crash report from Yongheng and Rui.

FossilOrigin-Name: 1ca0bd982ab1183bbafce0d260e4dceda5eb766ed2e7793374a88d1ae0bdd2ca
2019-12-18 00:05:50 +00:00
drh
646975c521 Clean up the ExprList that holds the names of columns in a CTE before checking
for unused references in the ALTER TABLE implementation.

FossilOrigin-Name: 8223e79f987feda5c8e51ec52cec6798cca16d070b10558939e2888ca1a25b8e
2019-12-17 12:03:30 +00:00
drh
4dad7ed532 When a table is part of a LEFT JOIN and should be a completely NULL row due to
the semantics of a LEFT JOIN, make sure any generated columns on that row
evaluate to NULL.  Ticket [3b84b42943644d6f]

FossilOrigin-Name: 0271491438ad2a985aeff355173a8d0f1e5813954c82147bc68cb26cca5804c8
2019-12-16 16:52:22 +00:00
drh
d35bdd6c09 Ensure that all ON CONFLICT REPLACE indexes are sorted to the end of the list
of indexes for a table, even for weird cases where the same UNIQUE constraint
occurs twice with the ON CONFLICT REPLACE clause only on the second one.  This
avoids an out-of-order contraint processing problem that can arise due
to the optimization of check-in [469a62ca33081854].

FossilOrigin-Name: 1e3918ca2f2c1cfcfa44249b1d7b847d52cbb8d302a8d4a335c090cfdf22d7a1
2019-12-15 02:49:32 +00:00
drh
95866af326 Abort the OP_Savepoint opcode early if a virtual table xSync method fails,
perhaps due to an interrupt.

FossilOrigin-Name: 672e749aef7351de3c69b365c1f80c756fda4e261b5d2ac1faa01d3a7d5a4c49
2019-12-15 00:36:33 +00:00
drh
7e3f135c62 When a generated column expression is initially parsed, if it contains errors
convert the expression to a simple NULL.  This prevents additional pieces of
the expression tree that are allocated from lookaside from leaking into the
schema, where lookaside allocations are not allowed.

FossilOrigin-Name: a89b38605661e36d192df1d074383b704b34a959fcbc169837c0d4f6848f3208
2019-12-14 19:55:31 +00:00
drh
75f1076885 Due to the previous change, the p5 parameter to OP_VColumn no longer ever
contains extraneous bits, so change a testcase() into an assert() to show
as much.

FossilOrigin-Name: 5b4a88cd3b3a32b1242e0eb733cc0bc4becb830a887b8e6604a4c7452050e163
2019-12-14 18:08:22 +00:00
drh
99670abb82 Do not set OP_Column flags on the instructions generated by
sqlite3ExprCodeGetColumn() if the opcode generated is not really an
OP_Column, which might happen if the column is virtual.
Fix for ticket [b439bfcfb7deedc6]

FossilOrigin-Name: 2401e04730a156aa48787b91af4e516406cb7635145e430be62fd16481816237
2019-12-14 17:43:37 +00:00
drh
aac30f9b50 Make the sqlite3ExprCodeTarget() expression code generator routine robust
in the face of unknown opcodes - it simply generates a NULL value.

FossilOrigin-Name: f8e876c82a246ceed32b166f64e05dfe5ce4ab4c6820be60404109b43d36bb80
2019-12-14 15:01:55 +00:00
dan
5be1b20aec Fix problems in fts3 with processing corrupt records and undefined integer overflows.
FossilOrigin-Name: 3b873029ef1903f76442445343af3786cd59ee66b0e5e0e6b76a0b6b1b5eb88a
2019-12-14 14:15:21 +00:00
drh
e3a4f2cf77 Fix an utterly harmless "applying zero offset to null pointer" UB warning
in sqlite3AtoF():

FossilOrigin-Name: 052fdf5e58b41ccadaa5aac293ceb4d309ced661d46f3a52be9eb8d01d347a82
2019-12-13 23:38:57 +00:00
drh
0f1fa5de04 Patch to the page cache to avoid harmless pointer arithmetic that due to bugs
in the STD-C spec is technically UB.  This is to fix a harmless UBSAN
complaint that OSSFuzz is hitting.

FossilOrigin-Name: c29fc21288e37f81a1617c5e2961c575d3bca6a1d1b013b2e0a99774afb1dcdb
2019-12-13 21:24:46 +00:00
drh
d335bc40a6 Change the default lookaside configuration to 40 slots of 1200-bytes each.
This actually works out to 30 big slots and 93 small slots using the 
mini-lookaside allocator.  We get the same (or better) lookaside coverage
but with 72KB less memory per connection.

FossilOrigin-Name: 47b71a84d1262c4bf6ad4f4a91820fd63593f08ae9efa144199d44972225e073
2019-12-13 16:04:52 +00:00
drh
e6068027ca Cleanup and performance enhancements for mini-lookaside.
FossilOrigin-Name: 74805668430051032ae9b256c84e252755ee03075fc08293c948675ed40ec280
2019-12-13 15:48:21 +00:00
drh
ee5b6dd393 Merge fixes from trunk.
FossilOrigin-Name: 9c471195f6d3e4b00e2d0f909b306a4036352082dca5f016a8eece226e82163d
2019-12-13 12:14:23 +00:00
drh
2e2c8819f1 Ensure that there is a containing SELECT statement when processing a
normal aggregate function as if it were a window function.

FossilOrigin-Name: c1014e80b26131200a115beb86929a8f0ded2dd65b075e47373346c0f170576a
2019-12-13 11:42:56 +00:00
drh
0d98598507 *Remove* the macros, not just comment them out.
FossilOrigin-Name: e5dc2939d3e8694d648fc9b73b1174da5b1349e20fbb9cf1c91268939f308f89
2019-12-13 11:32:28 +00:00
drh
4ec4dd701f Remove unused macros formerly used to define built-in aggregate functions.
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2019-12-13 11:31:47 +00:00
drh
85d9411c09 Reduce the size of ExprList to 24-bytes per entry, down from 32-bytes per
entry.  This helps keep lookaside allocations in the mini-size.

FossilOrigin-Name: bda92d92bf69a73bc6dd498f92578ad6e81111a3f97bc8724d1720e7283a83b6
2019-12-13 01:12:21 +00:00
drh
c4938ea2ba Tie up the loose ends in the ExprList size reduction.
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2019-12-13 00:49:42 +00:00
drh
cbb9da337e Work toward reducing the incremental size of an ExprList object to 24-byte
per entry, from 32-bytes (on a 64-bit machine).  This helps the new
mini-lookaside allocator to run better by avoiding excessive reallocs.
The current change mostly works, but still has a few loose ends to tie up.
This check-in is merely a snapshot to save my work.

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2019-12-12 22:11:33 +00:00
numist
1b47c9c98e Reduce the number of call sites to dbMallocRawFinish in the case where n > lookaside.sz
FossilOrigin-Name: e392e7f22861ce4b66e4bf84b59c8fd38568fc241a699e001f47fd82011f4d28
2019-12-12 20:58:32 +00:00
numist
c947d6a4dc Fix an issue where malloc could be used to fulfill a small allocation when a large lookaside slot could have beeen used instead.
FossilOrigin-Name: 611020e3378f4c81c277cccd84807ae51a816bbab6c3d887c91c5e5af3b5225f
2019-12-12 20:39:47 +00:00
drh
41cee66848 Change the name of the Expr.a.zName field to zEName, so that it has a name
that is distinct from other fields and variables and is hence easier to
grep for.

FossilOrigin-Name: d3783357f8fa76c42a86f12b214522f0388c37773c36ab8c5ce0623abbc4436a
2019-12-12 20:22:34 +00:00
drh
0225d819c4 Change the size of a mini-lookaside allocation to a macro (MINI_SZ) rather
than a magic number (128).

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2019-12-12 17:17:24 +00:00
drh
20d6c1fe1b Merge enhancements from trunk.
FossilOrigin-Name: 6cb053f99b5be2ecc30e0733d8f1e4f2a89f642656d3883fc0c867b10a87ba6b
2019-12-12 16:49:10 +00:00