Adds `round`, `hex`, `unhex`, `abs`, `lower`, `upper`, `sign` and `log`
(with base) to the expression fuzzer.
Rounding with the precision argument still has some incompatibilities.
Closes#3160
this PR improves 3-6% for `prepare` benchmark without slowing down
others. After this PR we don't have to store `InsnFunction` in
`Program` and `ProgramBuilder` anymore, because `to_function` will
return result without matching.
Reviewed-by: Preston Thorpe <preston@turso.tech>
Closes#3098
Currently header changes are tracked through pager by reading page 1.
MVCC has it's own layer to track changes during txn so this commit makes
it so that headers are tracked by each txn separately.
On commit we update the _global_ header which is used to update
`database_size` because pager commits require it to be up to date. This
also makes it _simpler_ to keep track of header updates and update
pager's header accordingly.
This PR is needed in order to make logical log work because we don't
want to rely on pager as much as possible!
Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>
Closes#3156
Currently header changes are tracked through pager by reading page 1.
MVCC has it's own layer to track changes during txn so this commit makes
it so that headers are tracked by each txn separately.
On commit we update the _global_ header which is used to update
`database_size` because pager commits require it to be up to date. This
also makes it _simpler_ to keep track of header updates and update
pager's header accordingly.
this is only used for returning LimboResult::Busy, and we already
have LimboError::Busy, so it only adds confusion.
Moreover, the current busy handler was not handling LimboError::Busy,
because it's returned as an error, not as Ok. So this may fix the
"busy handler not working" issue in the perf thrpt benchmark.
This adds basic support for window functions. For now:
* Only existing aggregate functions can be used as window functions.
* Specialized window-specific functions (`rank`, `row_number`, etc.) are
not yet supported.
* Only the default frame definition is implemented:
`RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW EXCLUDE NO OTHERS`.
Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>
Reviewed-by: Preston Thorpe <preston@turso.tech>
Closes#3079
on the main branch, mvcc allows concurrent inserts from multiple
txns even without BEGIN CONCURRENT, and then always hangs whenever
one of the txns tries to commit.
this commit fixes that issue.
Adds the AggValue instruction, which computes the current aggregate
result and writes it to a dedicated destination register.
Unlike AggFinal, it does not overwrite or clear the accumulator
register. This makes it possible to retrieve aggregate results multiple
times—needed when processing window functions—while preserving the
accumulator state.
Previously, only the External and Avg aggregates mutated state during
AggFinal. This is unnecessary because AggFinal runs only once per group,
so caching the result provides no performance benefit.
By avoiding state mutation, we can also reuse op_agg_final for the
AggValue instruction that will be added soon.
