to integer. Exising functions' behavior is tailored to `CAST` ops.
SQLite has different behavior when it comes to handling string to
`integer` conversion in CAST vs predicate ops.
This PR adds column names to the ouput of js pragma function.
Reviewed-by: Diego Reis (@el-yawd)
Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>
Closes#1608
This commit ensures that the metadata in the database header and the pointer map pages allocated are correctly persisted to the page cache. This was not being done earlier.
This commit introduces AUTOVACUUM to Limbo. It introduces the concept of ptrmap pages and also adds some additional instructions that are required to make AUTOVACUUM PRAGMA work
This PR adds support for table-valued functions for PRAGMAs (see the
[PRAGMA functions section](https://www.sqlite.org/pragma.html)).
Additionally, it introduces built-in table-valued functions. I
considered using extensions for this, but there are several reasons in
favor of a dedicated mechanism:
* It simplifies the use of internal functions, structs, etc. For
example, when implementing `json_each` and `json_tree`, direct access to
internals was necessary:
https://github.com/tursodatabase/limbo/pull/1088
* It avoids FFI overhead. [Benchmarks](https://github.com/piotrrzysko/li
mbo/blob/pragma_vtabs_bench/core/benches/pragma_benchmarks.rs) on my
hardware show that `pragma_table_info()` implemented as an extension is
2.5× slower than the built-in version.
Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>
Closes#1642
Closes#1628. Every function that calls `process_overflow_read` needs
to be reentrant. I did not change it here, but it would include
`get_prev_record` and `get_next_record`. Maybe `tablebtree_move_to` did
not need to use the state machine, but I included it as a safeguard.
Edit: Closes#1625 . When I implemented `restore_context`, I forgot to
add a `return_if_io` after calling it in `next` 🤦♂️
Edit: Closes#1617 . Just tested it and it also solves this bug.
Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>
Closes#1636
Instrument trace_insn to debug print its the stack pc and instruction.
Also, disable rustyline logs for the CLI as it is too noisy to work
with.
Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>
Closes#1635
Again found when fuzzing nested where clause subqueries:
Aggregate registers need to be NULLed at the start because the same
registers might be reused on another invocation of a subquery, and if
they are not NULLed, the 2nd invocation of the same subquery will have
values left over from the first invocation.
Reviewed-by: Preston Thorpe (@PThorpe92)
Closes#1614
Found while fuzzing nested subqueries. Since subqueries result in nested
plans, it quickly revealed that there can be multiple `DeferredSeek`
instructions issued for different cursors, but our `ProgramState` only
supported one at a time.
Closes#1610
