Bytebase is a DevSecOps solution for databases, supporting a wide range of database systems. It provides a web-based SQL Editor equipped with robust s

How We Built the SQL Autocomplete Framework with ANTLR4

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2024-11-14 15:30:04

Bytebase is a DevSecOps solution for databases, supporting a wide range of database systems. It provides a web-based SQL Editor equipped with robust security features, including permission control, data masking, and audit logging. However, beyond these security capabilities, a core feature for any effective SQL client is autocomplete.

After researching the mainstream SQL clients in the market, we found that while they perform well for simple queries, they often struggle when faced with more complex SQL statements. In this article, we’ll share how we implement autocomplete in Bytebase SQL Editor to tackle these limitations.

Autocomplete (also known as IntelliSense) is a familiar tool that developers use regularly. The problem it addresses is well-defined: providing relevant completion suggestions based on:

A naive approach is actually not difficult. We can simulate the user's thought process and establish a series of associative rules to handle scenarios that require auto-completion. Given my work and background, in this article, I will use simple SQL as an example.

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