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.
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index-btrees, never table-btrees, regardless of whether or not they are
used as IN_INDEX_LOOP or IN_INDEX_MEMBERSHIP. That way, the same ephmerial
table can be reused for both cases.
FossilOrigin-Name: c2d50df8fd1a1fdae6226a3e77296ded09b53a74540caedd4868e686a93cbc10
source tree to gather the WINDOW clauses on a query with window functions.
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database schema contains a trigger or view that itself contains an expression
"<column> AND 0".
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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
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
Fix up some test cases to account for the minor changes in EXPLAIN QUERY PLAN
output.
FossilOrigin-Name: 06de44ec9e173992ca9afb89dd2b4e40d2a7e35512c7959603cdceb606f5dfbd
subroutine, and reuse that subroutine if the same subquery is evaluated more
than once. Current code does not work for CHECK constraints.
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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.
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situation and ABORT instead. Fix for ticket [e6f1f2e34dceeb1ed61531c7e98].
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and sqlite3WalkerSelectFrom() twice, so that the compiler will in-line their
implementation.
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identifier names into wildcards. Fix this, and at the same time simplify
the code substantially.
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fixes a problem with views that use window function as part of complex
expressions.
FossilOrigin-Name: d7c816ae15f05f21b9b213161e1044aaefc56f17e7bc4b7b551a9e04efc05855
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
column is being coded as a constant, make sure the affinity is correct.
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a persistent source of bugs for years and with recent improvements
in the performance of OP_Column, it no longer provides a benefit. After
the column cache is removed, the binary is almost 2KB smaller and the
speed-check.sh performance test is over 3 million cycles faster.
FossilOrigin-Name: cdff3af7bedc5ebea04bd9b5e2112d3db451a475c18c9a9ebd45f6f3a89a43cb
