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Commit Graph

662 Commits

Author SHA1 Message Date
drh
c7e93f58d5 Performance optimization in the code generator for INSERT for the common
case where the target table has neither generated nor hidden columns.
Also fix a redundant (and thus unreachable) branch in the resolver.

FossilOrigin-Name: 16ac213c57196361a9d14df4c0d1ccc6f67ac522365b345ea364d1aec61fa3f2
2021-02-18 00:26:11 +00:00
drh
7dec804d42 Remove dead code. Fix RETURNING for INSERT into a virtual table.
FossilOrigin-Name: dbfa38699c87ab4bf390666e411dda8d375c7b53b9b4fb131adacbf575867a72
2021-02-04 22:59:19 +00:00
drh
18e5607211 New opcode OP_ChngCntRow used to output the result of PRAGMA change_count.
Only this new opcode, and not OP_ResultRow, checks for foreign key errors.
Faster performance, and now also works with RETURNING.

FossilOrigin-Name: 154fc2b15465c7c92a1af0a93851421aec42a81bab54840a9701f2c78068e14e
2021-01-31 15:50:36 +00:00
drh
d086aa0a48 RETURNING works even if "PRAGMA count_changes=ON" is set.
FossilOrigin-Name: a9122d97577b239704cdee1a90a3b0dbff8bdf9dea2324d7315bd47238dcc8eb
2021-01-29 21:31:59 +00:00
mistachkin
d6665c51e2 Fix harmless compiler warnings seen with MSVC.
FossilOrigin-Name: dc7938d2d715301595dee2fac6880af3716c4b3d1cbe7c3578d7fd30ba146a23
2021-01-18 19:28:56 +00:00
drh
21d4f5b53a Fix a potential use-after-free following an OOM in sqlite3ParserAddCleanup()
and add a mechanism to detect situations where this might occur in the
future.

FossilOrigin-Name: 38ef8ab9830e12acd2c710e113939b1f8dced02612c6933c37a3c948a4030d0a
2021-01-12 15:30:01 +00:00
drh
cf3c078f93 Add a linked list of ParseCleanup objects to the end of a Parse object and
use that list as a place to put other sub-objects that need to be deallocated.
Have a single such list for infrequently used sub-objects is more efficient
than doing an a separate check for each kind of sub-object.

FossilOrigin-Name: affa2b7b316941b8a6c4d0d1ff212c81a593faf1d05d129e14d2b70d73a25c59
2021-01-11 20:37:02 +00:00
drh
a06eafc8fc Do not set the P3 parameter on OP_RowCell when copying an index btree, as
P3 is not used in that case.

FossilOrigin-Name: eef070a4aadf02a845d0ed00767be049d3b76e811e24797a116776fa836d1b03
2020-12-29 15:06:26 +00:00
mistachkin
9a60e716f7 Fix a couple spelling typos in comments.
FossilOrigin-Name: 907ddf86766ebdbe39bdc89543c1a7bbd65c710c9f3a3a4d796845b2c02b711b
2020-12-22 19:57:53 +00:00
drh
9f023ce539 Enhance UPSERT so that it allows multiple ON CONFLICT clauses and does
not require a conflict target for DO UPDATE.

FossilOrigin-Name: 6b01a24daab1e5bcb0768ebf994368d941b1dfc217bf6b661211d900331e68cf
2020-12-14 15:39:12 +00:00
drh
255c1c159b New test cases with corresponding bug fixes.
FossilOrigin-Name: f22c21a94ca4cad0217f91c1a5a275bc348cb6ba0f3a54c927533bc8d8c96a90
2020-12-12 00:28:15 +00:00
drh
58b18a47df Begin adding test cases. Fix one bug found so far. More are pending.
FossilOrigin-Name: aadd67ddf2a191629b5356395f75e4556aac904a6e2f6b83742fa4f26e4253a4
2020-12-11 19:36:19 +00:00
drh
d3e21a1098 Small performance tweaks.
FossilOrigin-Name: 5321d60c575ef8f888d1b315df02cf9ed96a3ffc61babbc1429aa73b2a61a190
2020-12-11 17:11:56 +00:00
drh
ed4c54699d Bug fixes so that legacy tests pass. New tests for new functionality have
not yet been added.

FossilOrigin-Name: aa76790e58cea9a2b707f5912fd66c76545e7417442553fc13c87f773a2fe1dd
2020-12-11 16:49:51 +00:00
drh
61e280ad8a Logic is in place to handle multiple ON CONFLICT clauses, but it does not work.
Any use of ON CONFLICT will likely lead to memory faults.  This is an
incremental check-in to save my place.

FossilOrigin-Name: 155142314feb007d526f8f67723636fd50dc52d1cd4d3a67dd93b105c9d5c2be
2020-12-11 01:17:06 +00:00
drh
daf2761c62 Use an iterator for the index loop in sqlite3GenerateConstraintChecks().
The idea is that this iterator can be enhanced to traverse the indexes in
any order, as required by multi-index UPSERT.

FossilOrigin-Name: 64a4a91ecc5dcde3fa07d3cf038c74b9ede63d36628ecfb35203a9dfbbfe113c
2020-12-10 20:31:25 +00:00
dan
7aae73588a Better integrate the changes on this branch with OP_Insert and OP_IdxInsert.
FossilOrigin-Name: 101cef14910d6e865a94bc870aed599321b893188062a9a61d70a9434992cf23
2020-12-10 18:06:24 +00:00
dan
cd1b2d0b54 Transfer large index or WITHOUT ROWID records between b-trees when vacuuming without loading them into memory.
FossilOrigin-Name: dfd4ca6891a893d0e9551689954d3e79114d5565f8a5264f96ad1d64fe1d6280
2020-12-09 20:33:51 +00:00
drh
e84ad92f17 For upsert, the constraint check code generator uses a copy of the index list
for the target table, which can potentially be reordered.

FossilOrigin-Name: 3194c00c2c6a32bdfd5acc9fda5b38ae131d20cd3b7aea8512a41b2e76808f6a
2020-12-09 20:30:47 +00:00
drh
20b86324a1 Initialize all terms in the ON CONFLICT clause stack.
FossilOrigin-Name: 5e683fd1cbde53f37cf8a2b1e981191e2b29e3376db554691767f33c37c7547e
2020-12-09 01:34:48 +00:00
dan
036e0675e6 Experimental changes to vacuum to avoid loading large records entirely into memory. Currently only works in limited cases only - for rowid tables when the page-size does not change.
FossilOrigin-Name: c90e063ca9ddcdd1e9f1a2e25a3f7d6e7ee798373ad8acf65b90536b0a124c0d
2020-12-08 20:19:07 +00:00
drh
e2678b93af Fix a couple of unreachable branches.
FossilOrigin-Name: f2d26f2b11317abd4f993faa1a4df7afcd1a2d4e448ecc69ca05e9ebf102cd62
2020-08-28 12:58:21 +00:00
drh
289a0c849b Remove more unnecessary sqlite3GetVdbe() calls, replacing them with assert()s.
FossilOrigin-Name: b7dc932197665f0ebde3ffb8f0785c22da07ce307cfd5f0eab69e86e4b38fcde
2020-08-15 22:23:00 +00:00
drh
f0b41745c5 Avoid unnecessary calls to the sqlite3GetVdbe() routine. Add assert()
statements to prove each call is unnecessary.

FossilOrigin-Name: 86d3790caf92e9cb7a9aaaa110f309b4b6945ac30cfd53fc3e5aa1ec3075ada5
2020-08-15 21:55:14 +00:00
drh
08b9208660 Fix harmless compiler warnings that surface in newer versions of GCC.
FossilOrigin-Name: 9d670a318381f219b467653f5f9539097808b887ae37291ce13be462dedfb18d
2020-08-10 14:18:00 +00:00
drh
8deae5ade3 Fix signed/unsigned compiler warnings.
FossilOrigin-Name: 1d69eee8b085d514f442840346f001b4785f8ec64f5ba66943e9577b26e2e29c
2020-07-29 12:23:20 +00:00
drh
1e32bed3c1 Further refactoring of the schema table name.
FossilOrigin-Name: 9536fa0ae0c1ae6e2e98d2fa11e5acda7f3c9b8ca5061b6f7f8cae63a11d936b
2020-06-19 13:33:53 +00:00
drh
8e50d65aaf Improved bytecode comment.
FossilOrigin-Name: 9224f1543b51a674ad6d7db8e90d97e1b0d1abe68bed3417820ebd09d27270f9
2020-05-23 17:56:49 +00:00
drh
5cf1b611a2 Further changes to ensure that expressions held in table and index definitions
do not get passed down into code generator logic where they might be modified.

FossilOrigin-Name: f45f5de000834da5b23cdcf12c3f0e3073287756afe06bdb77b95fb65b250258
2020-03-10 18:55:41 +00:00
drh
c84ad31851 There is no need to keep track of the number of changed rows or of the
last-insert-rowid while running VACUUM.

FossilOrigin-Name: a8a7c05b16f6c73ac55c359fbf62cae4a76eb0d105a3c53e9f47cede9fd85916
2020-02-06 20:46:08 +00:00
drh
51f37b2bb8 Cosmetic change to the xfer-optimization to put the OP_RowData opcode closer
to the corresponding OP_Insert opcode.  This makes it slightly easier to read
and understand the code.

FossilOrigin-Name: 0ea2dbfc9088561d62c3456803cb08d357e4e60f1d21f6ed37315564be4957d3
2020-02-03 19:56:51 +00:00
drh
9dce0ef4ca On an INSERT or UPDATE, perform affinity conversions on new data prior to
running CHECK constraints.  Ticket [86ba67afafded936].

FossilOrigin-Name: 1d4f86201dab9a22df9ef8175a7ebf3640e97cdb23a06fb454b4c69bfda3a9af
2020-02-01 21:03:27 +00:00
drh
b9f2e5f777 Minor change for compatibility with the s390 architecture.
FossilOrigin-Name: 04885763c4cd00cbca26d048f2b19316bfc93e8edebeceaa171ebfc6c563d53e
2020-01-28 15:02:23 +00:00
drh
ef9f719d0b Fix #ifdefs so it compiles cleanly with all SQLITE_OMIT compile-time options.
Update compile-time option testing.

FossilOrigin-Name: 7584e4b649d57767aac3906da6b06549d5b772aaa69f469c623ae5da834d54d5
2020-01-17 19:14:08 +00:00
drh
378ca1eab3 Merge the latest enhancements from trunk.
FossilOrigin-Name: bd57e6d923d3b04f0a07aaf18bf389d2b2b7efc7c57e8cb37e6ef910662d8397
2020-01-02 21:41:59 +00:00
drh
3aef2fb1b4 Have the OP_ReleaseReg opcode also invalidate the registers if P5 is non-zero.
FossilOrigin-Name: 937be22106f7e3f08712febd342d6cb81d129f2d5ab24ce80b3a5c3f9bbde54e
2020-01-02 17:46:02 +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
5f6a2ed7f2 Merge recent enhancements from trunk.
FossilOrigin-Name: 39d55579376906f212271ce9b2d367e3ad029fb173f22c7253312b467970208a
2019-12-31 14:49:10 +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
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
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
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
b5f6243f6d Set the affinity of regular columns prior to computing the values of
generated columns.  Ticket [d7c3f125c925c522]

FossilOrigin-Name: d47d66e3d360d8aa6203a855228d2bc40d9a00d69c15f5066b7632d8fb1ed2cc
2019-12-10 02:48:41 +00:00
drh
c6b24ab1b1 Do not allow UPSERT of a view.
FossilOrigin-Name: ebf897e861c19e214c57f1e73841b505182202cc8d7d39e24d5a1e5625e26b4a
2019-12-06 01:23:38 +00:00
drh
7dc76d8ba0 Fix an out-of-bounds array reference in the generated column logic.
Problem discovered by valgrind.

FossilOrigin-Name: a0ab42f779b9a96f4e43879210dfaba8fa593de77fc0ec0e2e6f116d9301ea59
2019-11-21 20:10:31 +00:00
drh
1e7c00e695 Fix the xferCompatibleIndex() function so that it recognizes that a PRIMARY KEY
index for a WITHOUT ROWID table is different from a UNIQUE constraint index
on the primary key.  Ticket [302027baf1374498]

FossilOrigin-Name: 34f64f11ca481996b1ff1686bdc5e278946635b6856cd1fe2355fce8e298e0f8
2019-11-07 14:51:24 +00:00
drh
dfa15270c4 Change the way generated columns are computed so that no column is computed
inside branch code that might not be taken.  Ticket [4fc08501f4e56692]

FossilOrigin-Name: 9e07b48934e9a972dcf62e3538b3b21ffa044c553feba0441675ac0bbe13bcb2
2019-11-06 22:19:07 +00:00
drh
b1129c423f Fix the handling of NOT NULL constraint violations for generated columns in
a REPLACE statement.  Ticket [2399f5986134f79c]

FossilOrigin-Name: 77b1c90add514050fe62f22751362fecacd99f9775346cffc60e09c326e64e10
2019-11-06 14:49:43 +00:00
drh
b6d861e523 Add a missing translation from table column numbers to storage table numbers
while processing constraints on an UPDATE statement.
Ticket [9621dd78a024d07a]

FossilOrigin-Name: 361ea81ae8a13e7d2ec4c2412f30e049bb6ee320980d502c86bedc315cdd3bc0
2019-10-29 03:30:26 +00:00