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672 Commits

Author SHA1 Message Date
김선우
6b40acabbc Add support for sqlite_version() scalar function 2024-09-16 18:38:42 +09:00
JeanArhancet
d03a734f21 feat: add sign function 2024-09-15 14:57:01 +02:00
jussisaurio
3f0162c76c Support grouping by a function expression 2024-09-15 09:58:46 +03:00
jussisaurio
6b8cd02f71 Fix function expressions in like pattern not working 2024-09-15 09:57:54 +03:00
jussisaurio
234c56ca81 Fix two issues with LIKE operator (#319) 2024-09-15 09:57:54 +03:00
김선우
8b3e4da8da Apply comments 
- Specify the number of arguments using arg_count
- Add test for concat_ws
 2024-09-15 10:04:30 +09:00
김선우
fc07ca9d73 Add support for concat_ws 2024-09-14 23:47:45 +09:00
jussisaurio
a108dea825 GROUP BY 2024-09-14 16:14:45 +03:00
jussisaurio
0839211a49 Pass FuncCtx to Insn::Function to keep track of arg count 2024-09-14 12:38:14 +03:00
rjhallsted
dc3d3a492a Fix register positions of binary expression arguments to fix where-like-fn case 2024-09-12 12:03:27 -07:00
sonhmai
9cc965186f core: support modifiers in date function 2024-09-03 14:28:07 +07:00
Rajiv Harlalka
3447a553e1 chore: move tests 
Signed-off-by: Rajiv Harlalka <rajivharlalka009@gmail.com>
 2024-08-30 20:34:48 +05:30
Rajiv Harlalka
e2013b0ef6 add unixepoch tests 
Signed-off-by: Rajiv Harlalka <rajivharlalka009@gmail.com>
 2024-08-30 20:28:35 +05:30
sonhmai
c32bb91dd5 core: support modifiers in time function 2024-08-24 18:31:34 +07:00
Pekka Enberg
51eebb8ea5 Merge 'Add support for nullif scalar function' from Kim Seon Woo 
### EXPLAIN nullif(1,2)
<img width="1339" alt="image" src="https://github.com/user-attachments/assets/08230797-914d-4922-b52c-5b2b2b4c2a12">

### Issue
https://github.com/penberg/limbo/issues/144

Closes #299
 2024-08-20 20:47:35 +03:00
Kim Seon Woo
8bb2a48cb6 Add support for nullif scalar function 2024-08-20 18:36:06 +02:00
Kim Seon Woo
9d878fda55 Remove failing test for now 2024-08-18 21:05:01 +02:00
Kim Seon Woo
a95fcc0fc1 Fix test to check whether error message is included 2024-08-18 21:00:37 +02:00
Kim Seon Woo
c6402aa341 Add tcl 2024-08-18 21:00:36 +02:00
Pekka Enberg
edf0f754f6 Merge 'More structured query planner' from Jussi Saurio 
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
JeanArhancet
b6c720c90a feat: add quote function 2024-08-17 09:28:14 +02:00
jussisaurio
d70eb6b3d7 fix seekrowid operator not emitting result when root 2024-08-17 09:16:24 +03:00
jussisaurio
2d35641b86 whitespace 2024-08-16 19:42:03 +03:00
jussisaurio
989066eedf remove duplicate test after rebase 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 
Add support for `ifnull` scalar function

### EXPLAIN SELECT ifnull(null, 20);
![image](https://github.com/user-attachments/assets/e367638f-9d70-4dfc-989d-7290b842c2ec)

### 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 
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
10d452de2a Nit 2024-08-16 09:27:38 +09:00
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
77c3d130f3 Add char function support 2024-08-16 06:26:06 +09:00
김선우
aff13de125 Nit 2024-08-15 18:50:40 +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
JeanArhancet
4050a3ebe2 refactor: impl json5 direclty 2024-08-04 12:47:08 +02:00
JeanArhancet
4d0a25c1b4 test: add json tcl test 2024-08-04 10:56:52 +02:00
Pekka Enberg
d9b1cac27b testing: Add test database + WAL file 2024-08-03 12:16:34 +03:00
jussisaurio
d5ade427c2 add test for seekrowid order independence 2024-08-01 17:58:38 +03:00
jussisaurio
551b11303f Broaden the type of expr that qualifies as seekrowid candidate 2024-08-01 17:23:59 +03:00
sonhmai
789ae4becf feat: add time() scalar function partial support without modifier #158 2024-08-01 13:06:07 +07:00
Pekka Enberg
0c703a228d testing: Make individual test files executable 
Each test file is standalone to make it easy to run just some specific
tests. However, some of the files didn't have the executable bit.
 2024-07-29 09:41:40 +03:00
macroexpansion
918b99b7a3 feat: add RTRIM(X) and RTRIM(X,Y) scalar function 2024-07-28 21:17:53 +07:00
Pekka Enberg
ccf76aac54 Merge pull request #237 from penberg/optimize-constant-conditions 2024-07-27 22:56:56 +03:00
Pekka Enberg
0256de7bad Merge pull request #238 from macroexpansion/feature/add-ltrim-scalar-function 2024-07-27 15:57:48 +03:00
macroexpansion
750f18be35 feat: add ltrim scalar function 2024-07-27 19:46:27 +07:00
jussisaurio
700d9ee976 Optimize constant conditions 2024-07-27 15:08:30 +03:00
jussisaurio
016379fea4 core/translate: #154: implement WHERE IN (...) 2024-07-26 18:13:05 +03:00
jussisaurio
e3cc3da7ca Implement #216: order by column number 2024-07-26 14:35:33 +03:00