Miller is like awk, sed, cut, join, and sort for name-indexed data
Query data on the command line with SQL-like SELECTs powered by Python
Commandline tool for running SQL queries against JSON, CSV, Excel
sq data wrangler
Reads SSMS results and places the corresponding query by its results.
Relational database replication tool based on XML Schema
Personal Query Servant
Concise spatial query and representation system (c-squares)
Open mineral exploration database system
A tool for doing record analysis and transformation
Command-line sql JDBC tool
An easy way to manage SQLite databases and query CSV files
Query Abstraction Layer
SQL user interface for JSON
A schema to describe ANSI/ISO SQL in XML and associated tools