> ## Documentation Index
> Fetch the complete documentation index at: https://docs.e6data.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SQL reference

> SQL syntax, functions, and commands supported by Query Engine.

## Syntax and commands

* [Query syntax](/query/sql/query-syntax)
* [SQL commands](/query/sql/commands)
* [General functions](/query/sql/general-functions)
* [Unload function (COPY INTO)](/query/sql/copy-into)
* [Supported data types](/query/sql/data-types)
* [Equivalent functions and operators](/query/sql/function-mapping) in other SQL engines

## Functions

[All SQL functions](/query/sql/functions), by category:

* [String functions](/query/sql/functions/string)
* [Math functions](/query/sql/functions/math)
* [Date and time functions](/query/sql/functions/date-time)
* [Aggregate functions](/query/sql/functions/aggregate)
* [Window functions](/query/sql/functions/window)
* [Conditional and conversion functions](/query/sql/functions/conditional)
* [Array functions](/query/sql/functions/array)
* [Map functions](/query/sql/functions/map)
* [Struct functions](/query/sql/functions/struct)
* [JSON functions](/query/sql/functions/json)
* [Regular expression functions](/query/sql/functions/regex)
* [Hash functions](/query/sql/functions/hash)
* [Bitwise functions](/query/sql/functions/bitwise)
* [Bitmap functions](/query/sql/functions/bitmap)
* [Table functions](/query/sql/functions/table)
* [Geospatial functions](/query/sql/functions/geospatial)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.