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Commit Graph

1471 Commits

Author SHA1 Message Date
drh
a6e8ee12e2 Redefine the acccess rules for the Expr.w union so that the Expr.w.iJoin 
member is accessible on either EP_OuterON or EP_InnerON.

FossilOrigin-Name: 6f741d6cfb8831a3ac966257ac4519bcc8156293447bf50323c2d9b170125974
 2022-05-13 16:38:40 +00:00
drh
67a99dbee8 Improved names for flags on the Expr object: EP_FromJoin becames 
EP_OuterON and EP_InnerJoin becomes EP_InnerON.

FossilOrigin-Name: 1ffea07ff98b894729c698b681cc7433df3bbfccd8a0529a706908602a636937
 2022-05-13 14:52:04 +00:00
drh
d88fd53989 Organize the various flag bits of the ExprList_item object into a substructure 
so that the whole lot can be copied all at once.  Faster and smaller code.

FossilOrigin-Name: 5341d4bbe9a943f9cdbbdea829e18f108e98972ebb706396c50fc62fcc6a6328
 2022-05-02 20:49:30 +00:00
drh
72d620bdb1 Name resolution and "*" wildcard expansion for parenthesized FROM clauses 
seems to work the same as PG.  The code is chaos, however, and needs some
cleanup.

FossilOrigin-Name: 6f9c0b07aadc5189c65c3ee4e6938aac10fc0d98f1cb06980f5e5d7b0308f237
 2022-05-02 19:59:03 +00:00
drh
85f93850f7 Merge the latest trunk fixes and enhancements into the right-join branch. 
FossilOrigin-Name: afbcf075c1e09ae064c7b16e63501cd1d374711812664aef76bd35d02d64a2b6
 2022-05-02 15:10:38 +00:00
drh
3a45d30ea5 Improvement on check-in [a193749730d6cfba] so that the subroutine call to 
the IN operator right-hand side generator from the RIGHT JOIN no-match logic
does not generate unreachable byte code.

FossilOrigin-Name: cc458317bd77046c4328715ae9e3409f3f4cd422a01162cb33405ef3a142b0a3
 2022-05-02 14:32:56 +00:00
drh
b94182bdc6 Bring the comments on sqlite3FindInIndex() into closer alignment with what 
that routine actually does.

FossilOrigin-Name: 40f3274745b53bb72933c1052d0e85bc74be56d3a1068e9d54dc28763a2cfef9
 2022-05-02 11:24:21 +00:00
drh
09121b0523 Merge trunk enhancements into the right-join branch. 
FossilOrigin-Name: 3fd9706bba4a71cb5c7ce1341c3be0a7727941445820a073e7b2f0f32512e8ef
 2022-04-28 12:52:49 +00:00
drh
22b541b55a Fix a harmless typo in a comment. 
FossilOrigin-Name: e1f4a115df34e45cf1bcf98961c699b582f564a58a979e95853b219bda06212c
 2022-04-27 18:38:46 +00:00
drh
a9cdb90421 Fix a problem with automatic indexes introduced by 
check-in [664b461bb5063d980] and reported by
[forum:/forumpost/0d3200f4f3bcd3a3|forum post 0d3200f4f3bcd3a3].

FossilOrigin-Name: 7ca3456c00998a429418ff29cf251b381586b330b88344c94a40c5df0b71da85
 2022-04-25 19:40:33 +00:00
drh
ab843a51d3 Fix minor problems with the new join table name resolution logic. 
FossilOrigin-Name: 3a6b0db4519072dbd41b1c105bf1a0c6b4dd90380e94a5662645d8d41483c707
 2022-04-23 07:29:34 +00:00
drh
67f70bea06 Honor the MATERIALIZED keyword on a common table expression by not flattening 
the CTE into an outer query.

FossilOrigin-Name: 8d631a6b9eb06b54b10eda595a4c588ca38f909b4afa653b24d1f720b55d72f7
 2022-04-22 16:15:48 +00:00
drh
18f8600fe6 Avoid materializing columns of SF_NestedFrom subqueries that are never used. 
Other code improvements manually imported from the right-join-paren branch.

FossilOrigin-Name: cd8272fc2a34d1b245fd95208b9b601266ee7d2ff0f5ce52d03752f2c4e852a2
 2022-04-21 13:11:26 +00:00
drh
088b615acd Improved comment field in the bytecode generated for OP_Column and OP_Rowid. 
FossilOrigin-Name: 009bbf8026106c5a74cced06cced48badb870a4b6e6a2f8104a544d2a8d79e45
 2022-04-18 13:57:57 +00:00
drh
2bd9f44a18 Change OP_Return such that if P3 is 1, the Return is a no-op when the 
P1 register contains a NULL.

FossilOrigin-Name: c90602328a4b26f06d76c5343d29ebb7a782186c86ea88f5965a41040cff5346
 2022-04-17 20:30:52 +00:00
drh
a99e325468 Enhance the IdList object to exist in a single memory allocation (rather than 
a separate allocate for the base object and the array of IDs).  Also permit
an IdList object to store an Expr pointer together with each name.

FossilOrigin-Name: 40f3c95871e6f40f287ef2756abafb8fc56dffdd0af69436e5c7d8e95022d94e
 2022-04-15 15:47:14 +00:00
drh
79f60034ee Another instance of indenting a subroutine. 
FossilOrigin-Name: 73f4036b04798660b30e540cbab69420078df9fb62a6a39944e078c36272f905
 2022-04-14 19:05:17 +00:00
drh
2c31c00bfa Rerun the subroutines that compute row-values if necessary from within 
the RIGHT JOIN body subroutine.

FossilOrigin-Name: 9b9038bcd0ab5c4f01661456635526cef764f854ff24018a5e6e43825d07eb59
 2022-04-14 16:34:07 +00:00
drh
37f5584a2f Adjust the output formatting of bytecode listings so that subroutines used 
to implement subqueries are indented one level.

FossilOrigin-Name: 079b7b125206fb295720612f4853a5b786ec431ab595d35407195844779c149d
 2022-04-14 15:55:34 +00:00
drh
b77c07a715 Fix some comments that refer to LEFT JOIN that should refer to OUTER JOIN. 
No changes to code.

FossilOrigin-Name: 5be5ede5cca1cd5ef863fe0feb2b4a990f4a42865281a6c2e4eb816f48847dc6
 2022-04-11 11:59:25 +00:00
drh
d44f8b2385 Improved technique for parsing the ON and USING clauses of a join is faster 
and uses less memory.

FossilOrigin-Name: 158156a3e3d50042cafc75dea3aaaa68b1f2efb9c3d178518ea6e68e32e0d21c
 2022-04-07 01:11:13 +00:00
drh
1902516d16 Add the new OP_BeginSubrtn opcode (which is really an alias for OP_Integer) 
and make other changes so that the span of a subroutine that implements
a subquery is more readily apparent in bytecode listings.

FossilOrigin-Name: b8226748709de37cfc86414714c20567254e5b320b380e767c322dba69a79d49
 2022-03-03 15:00:44 +00:00
drh
2ef111168f Faster computation of Expr.nHeight. 
FossilOrigin-Name: a7a5af327ba8bafcd58b828e3e7a10d0008bb780d55a6c573aa15896dcc8ab89
 2022-02-06 11:51:23 +00:00
drh
62fc069eb4 Further improvements to localization of errors in input SQL. 
FossilOrigin-Name: fa34676042720161ca03f3926814152eb1d144ec12fd2b44e5429408ea4ad5b0
 2022-02-06 00:30:04 +00:00
drh
69b0ce33fd Fix various harmless compiler warnings. 
FossilOrigin-Name: 70049342d5ad57ea3e863bba19253934b868bacdd1c26c9371bac024a829badf
 2022-02-04 13:15:01 +00:00
drh
b32b30930f One of the ALWAYS() macros in the previous check-in could sometimes be 
false, following an OOM.  Remove it.  Problem found by dbsqlfuzz.

FossilOrigin-Name: 11df9187dad0eb33b0f6288b76d74f9700420ec855e8106b0bc71df48c485ad1
 2022-01-24 20:16:37 +00:00
drh
1da88b5ce6 Add ALWAYS() macros. Change some existing ALWAYS() into assert(). Other 
code simplifications.

FossilOrigin-Name: 4aa27b4fcd1ffd06c38357a87ba3f5776367570439c49652f0903873def0bb23
 2022-01-24 19:38:56 +00:00
drh
0c7d3d399d Remove many redundant checks for sqlite3.mallocFailed now that any OOM should 
cause Parse.nErr to be non-zero.

FossilOrigin-Name: 1f7fa46126ea33ed30e93186aff3df51068aeb4be6f79a102bfe8c4e44941d71
 2022-01-24 16:47:12 +00:00
drh
6df8c0cd3b Following a prior error, an ALWAYS() in sqlite3ExprCanBeNull() might be false. 
dbsqlfuzz 5dbec6678a20e7595a34dfdd869a3b9722b3ca43.

FossilOrigin-Name: 4e207401acce1bdc17025f2d55bd94234b435e286cd43e1eda03b6949a2a91d3
 2021-11-28 19:54:38 +00:00
drh
913306a53a Improved defenses against integer overflow when computing the size of a 
memory allocations.  No bugs were fixed here.  But perhaps future bugs will
be prevented.

FossilOrigin-Name: eb878c01f317f09e8ef6b1bd2ec8d6d5cd6ce0bdfe9da7fa7d92d2047cc9d9e4
 2021-11-26 17:10:18 +00:00
drh
a51e60079f Small performance increase and size reduction for sqlite3ExprCompare(). 
This change also handles some corner cases without the need for ALWAYS().

FossilOrigin-Name: d814ba6effc7c5b021ff625b57371627f3ee326687c508da99f78bc164386b7e
 2021-11-19 19:11:58 +00:00
drh
146121f5cb Improved handling of OOM while reallocating a column name to add type 
information.  dbsqlfuzz 5a195b4233649e49e0aa34f1b743ca192d85b198

FossilOrigin-Name: 5995dd4de4997c43b43befc1281ef6378f33f781134c7f368299d64db2344f1d
 2021-11-12 14:39:49 +00:00
drh
90cf38be63 Refactor the code that figures out which SELECT in a cascade of nested queries 
a particular aggregate function belongs to.  This fixes the problem
reported by [forum:/forumpost/c7cc2aa3546e39c1|forum post c7cc2aa3546e39c1].
New test cases in dbsqlfuzz and th3.

FossilOrigin-Name: 74aec5dd1df95b5635f4da1f13753f113ea1d61de3dc3a1523ba51089c1900e4
 2021-11-08 23:24:00 +00:00
drh
6d64b4a027 Ensure that the window function rewrite does not leave the parse tree 
in an invalid state that might cause problems downstream before the
error is recognized and unwinds the stack.  Also take steps such that
an invalid parse tree does not cause problems even if it goes 
unrecognized.  
[forum:/forumpost/398e9d5aa9|Forum post 398e9d5aa9].

FossilOrigin-Name: 0f9fc6b6073365d5159cd71e7fe08f8dadbc7b42abd324361e809502f4359155
 2021-11-07 23:33:01 +00:00
drh
f76d287742 Fix the build for various the OMIT-everything compile-time option. No impact 
on regular builds.

FossilOrigin-Name: 947805719bc8629619af5358ad50a6365c01f8d9ceabfe8e4df947696d3819b3
 2021-10-27 17:15:08 +00:00
drh
477572b9f1 Protect access to the Expr.y union using nearby assert()s and branches. 
FossilOrigin-Name: 87e2f5eb436fc448427b0e24fb70f29688796b513b8c7b12f1a21540dae1e56d
 2021-10-07 20:46:29 +00:00
drh
a4eeccdfdf Protect all accesses to the Expr.x union using nearby assert()s and branches. 
FossilOrigin-Name: 8eaa1d4a98b24adf245bbd2fe9212aa6a924a0f09c445906d7f87574f36a7423
 2021-10-07 17:43:30 +00:00
drh
f975107437 Protect all accesses to the FuncDef.u and Expr.u unions using nearby 
assert()s or branches.

FossilOrigin-Name: 9af863f065e0bef491c2ab7525194505f9516f4e6dfc789d2e3a9d2c2438533a
 2021-10-07 13:40:29 +00:00
drh
7d4c94bc0f Fix harmless static-analyzer warnings. 
FossilOrigin-Name: 32f33f356931242b59c01b5df7e180941231e3d9c91577ad33aa4a01e9d59092
 2021-10-04 22:34:38 +00:00
drh
c59ffa8c1e Fix harmless static analyzer warnings. 
FossilOrigin-Name: 1ebcde72e2046dffaa408d2a5a4a5bbf35fdf4b096e0e088dcffd9360effdaa7
 2021-10-04 15:08:49 +00:00
drh
952f35b24d Fix a harmless static-analyzer warning in sqlite3ExprCode(). 
FossilOrigin-Name: 918c22e82ae6e366ddd094d337ed73fd23878c51745045519ed700113832545c
 2021-10-02 17:46:24 +00:00
dan
ab632bc97e Fix another problem with ALTER TABLE and vector UPDATE statements within triggers. 
FossilOrigin-Name: a0df216f7c3f8963efba0b1ffee65d6a63309d846ffdcf2d2932cb4f1d4967b7
 2021-09-29 18:33:26 +00:00
drh
a40f5af403 Improved testability of changes from check-in [255b0eeed113d83b]. 
FossilOrigin-Name: bbfd083c26086fb103fec88faa59a01e689e0b7fce38c09d8846bb472a0e6760
 2021-09-29 14:01:44 +00:00
dan
5a69d19eea Fix a problem in ALTER TABLE causing table or column references in sub-selects ton the RHS of a vector SET clause in an UPDATE within a trigger (i.e. "SET (a,b) = ( (SELECT...), <expr> )"). 
FossilOrigin-Name: 255b0eeed113d83b474efc5bc8fc790a270bc43ee598df4b2c378e1ad2d729b7
 2021-09-27 15:44:03 +00:00
drh
1580d50b76 Add const to parameters on various internal interfaces. 
FossilOrigin-Name: 70c221c5cf7b4d9ed34f16d045f262f99d16aa3db84f80cf0b03ee82ba28d075
 2021-09-25 17:07:57 +00:00
drh
b6dad520e5 Add lots of new "const" on internal function parameters. There is opportunity 
for many more - this is a work in progress.

FossilOrigin-Name: a3c71a673ddd1c299bdae550fb955077b77088329a8ca2895dfb23538b524a8e
 2021-09-24 16:14:47 +00:00
drh
3780f9a4aa Make the affinity() function available even if compiled without 
SQLITE_DEBUG.  Surround the implementation of all test-only SQL functions
with #ifndef SQLITE_UNTESTABLE.

FossilOrigin-Name: b7e00ef8059f6fb5658c6ad6f337cfdf065a5f1b1130452122282f3a69e98a93
 2021-09-17 13:07:15 +00:00
drh
65b400931d Store the collating sequence name for each column of a table as an 
extension to the column name, for an additional savings in the heap space
needed to hold the schema.

FossilOrigin-Name: 832ac4c1ee384be0de72a4bdd55ed87e0f8294e7df5eefcf6b4942db3d85a69e
 2021-08-05 15:27:19 +00:00
drh
cf9d36d1b3 Refactor field names in the Column object, zCnName and zCnColl, to make them 
unique and thus easier to find amid all the other code.

FossilOrigin-Name: 8b781dcaf68e0cf12a844708c82eee00193e340195cbca915d077e4846983bf3
 2021-08-02 18:03:43 +00:00
drh
f38524d20d Refactor the Table object to reduce its memory footprint. 
FossilOrigin-Name: bbb6759bcf6e01d36dfc787a82a610d359f50aaeac8104b73883a84906d54e1f
 2021-08-02 16:41:57 +00:00