of its table is used by an UPDATE statement in one-pass mode, then avoid the
use of OP_DeferredSeek since the seek might not be resolved prior to the
OP_Delete and OP_Insert that implement the UPDATE.
FossilOrigin-Name: e3398c5ffb060b2b26334b8598e2c63953741e2d6f5124dbd6bdfc8e94742539
The WHERE clause of the partial index might not be true if the table of
the partial index is the right table of a left join. So disable the
optimization in that case. Ticket [623eff57e76d45f6]
FossilOrigin-Name: 3be19e1151af1850b65991edb82420f9412a7798dd756c86eaa9ffdde573263a
corresponding index columns NUMERIC. This increases the precision of
index lookups for large numbers so that it matches the precision of
ordinary comparison operators. Ticket [40812aea1fde9594]
FossilOrigin-Name: e0d909c740b774d8a46731696e33342be83206cc4a95d07f42fdb3d8cc2d7a8e
normal scan and 1 when scanning nulls. This enables the re-do jump at the
bottom of the loop to be coded with a single OP_IfNotZero opcode, rather
than a sequence of OP_If, OP_Integer, OP_Goto.
FossilOrigin-Name: bf875e1a259a4167694e06349458452dc36c1d38aa6843518d9ae46ce74e5559
with no affinity can appear in a zero-terminated string. Use the new
SQLITE_AFF_NONE macro for this new magic number.
FossilOrigin-Name: e8234f6939ccff4c10f741cf66d1c537cfebcbd0d1d79a618a64c755a7f087b5
keep the number of parser codes below 256 in order to save parser table space.
But we have long since blown through that ceiling so the addopcodes.tcl script
was just needless complexity. There is no longer any reason to keep it around.
FossilOrigin-Name: d272819298083ebbde57962a2938925b1aaa1caf03e48bb3ea26ad91e0461d84
of the partial index must always be true. Use this fact to avoid evaluating
identical terms in the WHERE clause of the query.
FossilOrigin-Name: 9b2879629c34fc0a8e99d94648903eb93aabbc7a3682c80cb7382f9a9ca5ffb7
[df46dfb631f75694], as the new test case in this check-in demonstrates.
The fix here causes test cases for the [df46dfb631f75694] bug to fail
again, so this check-in is on a branch. A new fix is needed for
[df46dfb631f75694].
FossilOrigin-Name: 0d456456da6e25b20d9d27ca95f1013082bca52ee74ee9bf91732a9fa843ea45
will not be used afterwards for a (pointless) membership test. This is
a better fix for ticket [df46dfb631f75694] than the previous fix that is
now on a branch as it preserves the full optimization of
check-in [e130319317e76119].
FossilOrigin-Name: fa792714ae62fa980f1767acc6d622a6727ceb677870243c88548423795dcb5b
an index on that expression when processing a multi-index OR
(see check-in [a47efb7c8520a0111]) because the expression transformations
that are applied become invalid when the processing moves off of the current
index and on to the next index. Fix for ticket [4e8e4857d32d401f].
FossilOrigin-Name: 440a7cda000164d3b46109caf2e1dde80681ba9b0d94ba9be6847d2b917445cf
memory allocations by deferring memory allocation until
sqlite3VdbeResolveLabel() is called, at which point the code generator has
a better idea of how big the relocation table needs to be.
The sqlite3VdbeMakeLabel() routine now takes a Parse* parameter instead of
Vdbe*.
FossilOrigin-Name: 4a0929ac76d8aa5dd65eac3b83d6bbf41e505e01d175ca0fb2b19ba02d439415
encourage the compiler to inline that routine within sqlite3WhereBegin().
This gives a performance improvement.
FossilOrigin-Name: 3c2ad0e915e835b1cb2962879beff50b2745d0cefe1cfc89ef90b7879c139ce6
a separate "INDEX" subtree for each index. SCALAR SUBQUERY entries provide
a subquery number that is related back to the .selecttrace output.
FossilOrigin-Name: 7153552bac51295c56a1c42ca79d57195851e232509f9e9610375692f48c7e86
subroutine, and reuse that subroutine if the same subquery is evaluated more
than once. Current code does not work for CHECK constraints.
FossilOrigin-Name: 6c44838adbe5dc482bc010e91a6dd7a0f777c989f443dd600740d2c783208e0d
EXISTS expressions into two separate subroutines, because there is now little
commonality between those to functions. This is intended to help make the
code easier to read and maintain.
FossilOrigin-Name: 2b6494b1509f0d0189f98aa34c990eee99c775ff57826e79b2c5b0a12b4c97ad
operations on a PRIMARY KEY that contains duplicate columns.
Ticket [1a84668dcfdebaf12415d].
FossilOrigin-Name: dcb8c73594ea6b12bad98dc883a585d3e6b925c2ead267dc40332b3d266db5e8
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
