hasql-th
zetasql
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hasql-th | zetasql | |
---|---|---|
4 | 15 | |
110 | 2,130 | |
- | 1.6% | |
5.2 | 0.0 | |
5 months ago | about 2 months ago | |
Haskell | C++ | |
MIT License | Apache License 2.0 |
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hasql-th
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How to use PostgreSQL with Haskell: hasql
Hasql is an ecosystem of libraries. To keep it simple, let’s limit ourselves to core hasql, hasql-transaction, and hasql-th. We’re using hasql 1.6.3.2 published in 2023.
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Parsing SQL
unexpected '&'
https://github.com/nikita-volkov/hasql-th#error-example-1
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Open Source SQL Parsers
There is also a Haskell port of the original PostgreSQL parser, implemented using megaparsec, which makes it highly flexible and hackable: https://github.com/nikita-volkov/hasql-th#implementation
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Haskell doesn't make sense without pure functions
I'd consider hasql-th a good example in what concerns databases. Otherwise, I just use aeson together with deriving-aeson and lens-aeson.
zetasql
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Mangle, a programming language for deductive database programming
There are even table-valued functions.
These things are not widespread, and differ by implementation, and the way these are used by clients are copy-and-paste. Something as thoughtful as ZetaSQL https://github.com/google/zetasql does not have mechanisms for structuring (modules, packages, interfaces). SQL will not, cannot evolve into such a direction (or, anything that evolves, will not be recognizable as SQL).
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goccy/bigquery-emulator: BigQuery emulator server implemented in Go
Hi, I develop a BigQuery emulator ( https://github.com/goccy/bigquery-emulator ) from early 2022. It is written in Go, but can be used from bq command line tool and other language's (e.g. Python ) client SDK after installing docker image or released binary. It currently supports over 200 of the nearly 330 standard functions in BigQuery and all data types except GEOGRAPHY ( see https://github.com/goccy/go-zetasqlite#status for details ). ZetaSQL ( https://github.com/google/zetasql ) is used to parse and analyze queries.
- ZetaSQL – Analyzer Framework for SQL
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ZetaSQL - Question about using local service
We are using a Python client binding for ZetaSQL GRPC local service in our application to analyze statements and extract referenced tables and output columns.
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Parsing SQL
If you don't want to do it yourself, there's this:
https://github.com/google/zetasql
Parsing is huge but it's amazing how small a part of the job it is. This library isn't even the half of it.
- SQLGlot: SQL parser, transpiler, optimizer – translate to Presto, Spark, Hive
- ZetaSQL - Analyzer Framework for SQL
- ZetaSQL
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New PostgreSQL Interface for Cloud Spanner
I mean the postgres parser (and semantic changes) for ZetaSQL. The zetasql parser is in a file called zetasql/parser/bison_parser.y, I strongly suspect they now have a file called something like zetasql/pgparser/bison_parser.y as well (and much more pervasive changes to support the deeper differences in the dialects).
This is the lexical structure and syntax docs for the new postgres inteface to cloud spanner:
https://cloud.google.com/spanner/docs/postgresql/lexical
And this is the zetasql lexical structure and syntax docs:
https://github.com/google/zetasql/blob/master/docs/lexical.m...
Notice that the new PG docs are an edit of the Zeta ones - evidence that my hypothesis is correct.
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Open Source SQL Parsers
zetasql implements BigQuery, Spanner, and Dataflow dialects.
What are some alternatives?
Neks - A dead simple networked key/value store
sqlparse - A non-validating SQL parser module for Python
tokyocabinet-haskell - This repository will get archived soon. Please visit https://git.singpolyma.net/tokyocabinet-haskell
Apache Calcite - Apache Calcite
hasql - The fastest PostgreSQL libpq-based driver for Haskell
JSqlParser - JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern
wai-middleware-cache-redis - Redis backend for wai-middleware-cache
ANTLR - ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.
ampersand - Build database applications faster than anyone else, and keep your data pollution free as a bonus.
pgsql-parser - PostgreSQL Query Parser for Node.js
hasql-notifications - Use PostgreSQL LISTEN/NOTIFY with your Hasql Types
sqlite-parser - JavaScript implentation of SQLite 3 query parser