JSqlParser
rhizome
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| JSqlParser | rhizome | |
|---|---|---|
| 4 | 8 | |
| 4,956 | 814 | |
| 2.1% | - | |
| 9.2 | 1.8 | |
| 2 days ago | almost 3 years ago | |
| Java | Ruby | |
| Apache License 2.0 | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
JSqlParser
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Semantic Diff for SQL
I wonder if this is a topical thread to check if anyone is aware of a Java based solution to parse a CREATE VIEW statement to get a mapping between the view columns and the corresponding source table columns. I checked out jsqlparser[0] and it does produce an AST which can be parsed using the visitor-pattern[1] but was wondering if there is a more "out-of-the-box" solution. Due to various reasons, querying the database information schema is not an option I can pursue.
[0]: https://github.com/JSQLParser/JSqlParser
[1]: https://en.wikipedia.org/wiki/Visitor_pattern
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Open Source SQL Parsers
JSQLParser can parse multiple SQL dialects like MySQL, Postgres and Oracle. The grammar can be modified to support other SQL dialects.
- Let's write a compiler, part 5: A code generator
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Racket v8.0
Interesting coincidence - I'm working on a parser that parses the AST produced by JSqlParser[0] for a create view statement to generate mapping between the columns of a view and the columns of its underlying table. It is an interesting example of having to use the visitor pattern[1].
[0]: https://github.com/JSQLParser/JSqlParser
rhizome
- How do optimizing compilers convert variables into registers
- YJIT: Building a New JIT Compiler for CRuby
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Tenderjit – A JIT for Ruby Written in Ruby
There was actually an existing, similar in concept, Ruby JIT, Rhyzome: https://github.com/chrisseaton/rhizome.
It's good to see (IMO) the development of a JIT in a strict sense. I'm personally skeptical about the current approach (invoking a compiler separately).
On the other hand, it's important to know that JITs may take a long development time to be performant, and that they also complicate the performance profile of a virtual machine.
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Let's write a compiler, part 5: A code generator
Lots of compiler tutorials are like this - there's very little out there to explain how compilers really work.
This is my effort - trying to show genuine data structures and processes.
https://github.com/chrisseaton/rhizome
- Thoughts about Intermediate representations
- A JIT for Ruby, implemented in pure Ruby (/r/ruby)
- Rhizome – a JIT for Ruby, implemented in pure Ruby
What are some alternatives?
Apache Calcite - Apache Calcite
yjit - Optimizing JIT compiler built inside CRuby
sqlglot - Python SQL Parser and Transpiler
sqlite-parser - JavaScript implentation of SQLite 3 query parser
zetasql - ZetaSQL - Analyzer Framework for SQL
grammars-v4 - Grammars written for ANTLR v4; expectation that the grammars are free of actions.
sqlparse - A non-validating SQL parser module for Python
Presto - The official home of the Presto distributed SQL query engine for big data
swifties - a custom language construction kit
ANTLR - ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.
langjam