Kim Seon Woo
8bb2a48cb6
Add support for nullif scalar function
2024-08-20 18:36:06 +02:00
Pekka Enberg
edf0f754f6
Merge 'More structured query planner' from Jussi Saurio
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Reader's guide to this PR:
The aim is to have a more structured and maintainable approach to generating bytecode from the query AST so that different parts of the query processing pipeline have clearer responsibilities, so that developing new functionality is easier. E.g.:
- If you want to implement join reordering -> you do it in `Optimizer`
- If you want to implement `GROUP BY` -> you change `QueryPlanNode::Aggregate` to include it, parse it in `Planner` and handle the code generation for it in `Emitter`
The pipeline is:
`SQL text -> Parser -> Planner -> Optimizer -> Emitter`
and this pipeline generates:
`SQL text -> AST -> Logical Plan -> Optimized Logical Plan -> SQLite Bytecode`
---
Module structure:
`plan.rs`: defines the `Operator` enum. An `Operator` is a tree of other `Operators`, e.g. an `Operator::Join` has `left` and `right` children, etc.
`planner.rs`: Parses an `ast::Select` into a `Plan` which is mainly a wrapper for a root `Operator`
`optimizer.rs`: Makes a new `Plan` from an input `Plan` - does predicate pushdown, constant elimination and turns `Scan` nodes into `SeekRowId` nodes where applicable
`emitter.rs`: Generates bytecode instructions from an input `Plan`.
---
Adds feature `EXPLAIN QUERY PLAN <stmt>` which shows the logical query plan instead of the bytecode plan
---
Other changes:
- Almost everything from `select.rs` removed; things like `translate_aggregation()` moved to `expr.rs`
- `where_clause.rs` removed, some things from it like `translate_condition_expr()` moved to `expr.rs`
- i.e.: there is nothing _new_ in `expr.rs`, stuff just moved there
---
Concerns:
- Perf impact: there's a lot more indirection than before (`Operator`s are very "traditional" trees where they refer to other operators via Boxes etc)
Closes #281
2024-08-18 16:36:51 +03:00
jussisaurio
b7fbe57ca7
Move translate_table_columns to expr.rs
2024-08-17 14:16:56 +03:00
JeanArhancet
b6c720c90a
feat: add quote function
2024-08-17 09:28:14 +02:00
jussisaurio
17cc3717c8
rebase
2024-08-16 19:43:29 +03:00
jussisaurio
9ab08ee2e6
is_rowid_alias instead of primary_key
2024-08-16 19:42:03 +03:00
jussisaurio
2e32ca0bdb
More structured query planner
2024-08-16 19:42:03 +03:00
Kim Seon Woo
48d3c05fb0
Rebase
2024-08-16 21:40:30 +09:00
Pekka Enberg
c9c0d2808c
Merge 'Add support for ifnull scalar function' from Kim Seon Woo
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Add support for `ifnull` scalar function
### EXPLAIN SELECT ifnull(null, 20);
### Related issue
https://github.com/penberg/limbo/issues/144
Closes #290
2024-08-16 14:37:08 +03:00
Pekka Enberg
ba3acedbc8
Merge 'Add support for substr scalar function' from Kim Seon Woo
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Add support for `substr` scalar function. We can reuse the `substring` logic which is already implemted.
## Related issue
https://github.com/penberg/limbo/issues/144
Closes #289
2024-08-16 14:36:55 +03:00
김선우
8fbcd10e0e
Add support for ifnull scalar function
2024-08-16 09:25:04 +09:00
김선우
27d9af2bf4
Add support for substr scalar function
2024-08-16 08:26:42 +09:00
김선우
ced664621f
Allow char function to have empty args
2024-08-16 06:33:18 +09:00
김선우
77c3d130f3
Add char function support
2024-08-16 06:26:06 +09:00
김선우
28bd0275c0
Run cargo fmt, clippy
2024-08-15 18:56:02 +09:00
김선우
dc48c2e71d
Add substring scala function with 2 arg
2024-08-15 18:47:32 +09:00
김선우
3fa3c5c002
Add substr scala function
2024-08-15 18:27:18 +09:00
Vegard Stikbakke
e54fd83f49
Handle FunctionCallStar in analyze_expr
2024-08-11 13:59:49 +02:00
Pekka Enberg
d4d7042373
Merge 'Use the correct integer PK column idx as the row-id alias' from GV
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This pull request addresses [issue #256 ](https://github.com/penberg/limbo/issues/256 ).
However, it currently breaks insertions into tables that lack a row-id
alias due to the NewRowId not being implemented yet. I have created an
[issue](https://github.com/penberg/limbo/issues/275 ) to track this
problem and will submit a separate pull request to resolve it soon.
Closes #274
2024-08-06 08:11:10 +03:00
Pekka Enberg
5b7d112e74
Merge 'implementation of json function json(X)' from Jean Arhancet
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Add the `json` function `json(X)` (related to the issue https://github.com/penberg/limbo/issues/127 )
Closes #230
2024-08-06 08:05:33 +03:00
gandeevanr
2b86f89d8d
use the correct integer PK column idx as the row-id alias
2024-08-04 18:53:54 -07:00
JeanArhancet
4050a3ebe2
refactor: impl json5 direclty
2024-08-04 12:47:08 +02:00
JeanArhancet
8dbced6a39
refactor: delete Insn Json
2024-08-04 10:56:51 +02:00
JeanArhancet
552090cb29
feat: add json support
2024-08-04 10:54:27 +02:00
sonhmai
0e7bd95e4e
core: fix clippy
2024-08-03 20:14:26 +07:00
sonhmai
789ae4becf
feat: add time() scalar function partial support without modifier #158
2024-08-01 13:06:07 +07:00
Pere Diaz Bou
84bf0ea96a
core: remove a bunch of warnings
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Signed-off-by: Pere Diaz Bou <pere-altea@hotmail.com >
2024-07-31 17:27:02 +02:00
Pere Diaz Bou
affe3443cc
core: vbde coroutine generation with rowid insert
2024-07-31 17:25:01 +02:00
macroexpansion
918b99b7a3
feat: add RTRIM(X) and RTRIM(X,Y) scalar function
2024-07-28 21:17:53 +07:00
Jussi Saurio
9a50d53fcb
Merge pull request #244 from penberg/fold-columns
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core: Fold columns into column_info in Select struct
2024-07-28 10:50:57 +03:00
Pekka Enberg
93d88d6cca
core: Fold columns into column_info in Select struct
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As a cleanup, fold the columns struct member into column_info by
introducing a `raw_column` in `ColumnInfo` struct.
2024-07-28 10:01:48 +03:00
macroexpansion
750f18be35
feat: add ltrim scalar function
2024-07-27 19:46:27 +07:00
Pekka Enberg
ec6f0224ef
Merge pull request #224 from ethanniser/add-unicode
2024-07-25 20:37:39 +03:00
Ethan Niser
aa6531f802
add unicode scalar function
2024-07-25 10:05:41 -07:00
Pekka Enberg
351242561d
Kill anyhow usage
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Switch anyhow to explicit `LimboError` type using thiserror crate, which
lets us make error handling more structured.
2024-07-25 17:15:08 +03:00
Pekka Enberg
be91b9aaca
core: Move build_select() to select.rs
2024-07-24 21:13:08 +03:00
Ethan Niser
07d6ebef24
rename SingleRow -> Scalar
2024-07-24 08:53:47 -07:00
jussisaurio
1117aeef74
ORDER BY: support nullable sorting columns and qualified identifiers
2024-07-24 15:27:55 +03:00
jussisaurio
9eb68524e7
Upgrade sqlite3-parser #185
2024-07-24 14:05:39 +03:00
Pekka Enberg
0cb993e152
Merge pull request #204 from jussisaurio/multi-way-join
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Refactor join processing / support multiway joins
2024-07-24 11:06:32 +03:00
jussisaurio
588ab1af06
Run formatting and enforce formatting in CI
2024-07-23 23:14:36 +03:00
gandeevanr
871fae3286
Implement the Date() method
2024-07-23 09:19:08 -07:00
jussisaurio
84cf4033d5
Refactor join processing
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- Make all constraints a list of WhereTerms in a ProcessedWhereClause
- Support multiple joins instead of just one
2024-07-23 15:04:40 +03:00
Pekka Enberg
8f00888a6c
core: Move ProgramBuilder to vdbe/builder module
2024-07-23 14:30:31 +03:00
Brayan Jules
c227001737
support handling functions with the same name but different parameters number
2024-07-22 17:02:36 -04:00
Brayan Jules
b81f7d9acd
add cursor_hint to min and max scalar functions
2024-07-22 17:02:36 -04:00
Brayan Jules
dde00c3bc5
implementation of scalar functions min and max
2024-07-22 17:02:36 -04:00
Bennett Clement
0bf0b41692
Use case insensitive lookup for table and column
2024-07-22 16:27:36 +08:00
Pekka Enberg
a5dd8fd92c
core: Move select.rs to translate/
2024-07-21 20:36:56 +03:00
Pekka Enberg
fee1530ea6
core: Move expr.rs to translate/
2024-07-21 20:36:56 +03:00
