of bugs for many years. We recent enhancements to the performance of the
OP_Column opcode, the removing the column cache actually makes speed-check.sh
run faster. It also saves about 1,800 bytes of code space.
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at least one expresssion is required after PARTITION BY and within the
list of expressions on VALUES().
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mechanism is changed to take affinity and collation into account. This
seems to give correct answers. But the search for constant propagation
costs 4 million cycles in the speed test.
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to run to completion before being reprepared. Fix for ticket
[c694113e50321afdf9].
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integers rather than "0x%p". This is more readable and yields the same result
on successive runs.
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testing logic. Provide new macros that allow the code to specify that
some branch instructions can never take the NULL path and that the OP_Jump
opcode is only interested in equal/not-equal. The
SQLITE_TESTCTRL_VDBE_COVERAGE file control callback now works slightly
differently (it provides the callback with a bitmask of the branch action,
rather than an integer).
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clause and a frame starting point other than "UNBOUNDED PRECEDING".
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objecct is constructed, instead of recomputing it every time it is needed.
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for case conversions before calling xFindFunction on virtual tables.
Avoid using lookaside to store the destructors for application defined
functions, as lookaside should be reserved for transient allocations.
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the new sqlite3_str object and its associated methods. This is mostly just
a renaming of internal objects and methods to use external names, through
there are a few small wrapper functions.
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it becomes clear that the row will not come in under the LIMIT, then skip
evaluation of the other columns.
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database to appear to be empty, causing the next transaction to reset it to
an empty database.
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be displayed, after all transformations, and showing the EQP iSelectId at
each level.
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that some required values may be loaded from the database after external
sorting occurs for SELECT statements with ORDER BY clauses that are not
satisfied by database indexes.
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