5 SQL Parsing Tools / SQL Parsers for PostgreSQL

General SQL Parser

https://www.sqlparser.com/

General SQL Parser is a SQL Parser developed by Gudu Software that simplifies decoding SQL grammar and helps your applications stay current with the latest versions of database programs. It makes it easy to fetch, modify, and rewrite SQL segment and prepares a detailed SQL parse tree node structure. With General SQL Parser, you can clean up messy SQL codes, detect SQL Syntax errors, find affected SQL objects, rewrite and convert SQL, and do a lot more.

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Apache Calcite

https://calcite.apache.org/

Apache Calcite is an industry-standard SQL parser, validator, and JDBC driver. It represents your query in relational algebra, transforms using planning rules, and optimizes according to a cost model. In addition, you can connect to third-party data sources, browse metadata, and optimize by pushing the computation to the data.

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JSQLParser

https://jsqlparser.github.io/JSqlParser/

JSQLParser is an RDBMS agnostic SQL statement parser. Built from JavaCC, it translates SQL statements into a traversable hierarchy of Java classes. It provides support for many dialects, such as Oracle, MS SQL Server, MySQL, MariaDB, PostgreSQL, H2, etc.

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Active Query Builder

https://www.activequerybuilder.com/product.html

Active Query Builder is a full-featured component suite for software developers. It includes an SQL Query Parser to build an SQL query object model of any given SQL query and a Visual Query Builder component to design SQL queries via an intuitive visual interface. Moreover, it includes an SQL Text Editor with code completion and syntax highlighting, along with a highly-customizable SQL Query Text Formatter. In short, it gives end users a clear view of their queries and database schema.

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Log Parser Lizard GUI

https://lizard-labs.com/log_parser_lizard.aspx

Log Parser GUI is a powerful log parsing and data querying software that allows you to easily extract valuable information from your logs using the power of SQL queries. With Log Parser Lizard, you can easily parse various system or application logs and then execute SQL queries against them with ease. The software provides a Graphical User Interface (GUI) for Microsoft Log Parser 2.2, an advanced file-parsing engine from Microsoft that runs on all versions of Windows.