Introduction to React Query Builder

Initializing the query builder

Fields and operators

Getting started

Translations

Other customizations

Built-in input types

Custom value editors

Configuration

Formatting the query

Server setup, part 1

Server setup, part 2

Fetching data

Displaying data in the grid

Displaying data in a chart

Integrating with an API

Adding a new API endpoint

Preparing a new data set

Displaying the new data

Displaying a map

Geographic data

Setting up the bulk editor

Enhancing the bulk editor

Finalizing the bulk editor

Bulk edits

react

react-querybuilder

node-sass

postgresql

typescript

In this course we teach you how to create admin reports with React using a query builder. Admin reporting is a broad topic, and getting started can be overwhelming.

In five modules, we cover configuration of the query builder, setting up a server, displaying data in a grid, chart, and map, as well as some more advanced uses of the query builder. It's about three hours long and comes with code samples.

The course is taught by Jake Boone, who uses React Query Builder in real, mission-critical applications for a large engineering and construction firm.

In this course, we'll be using React Query Builder to create admin reports with complex filtering, bulk editing, data grids, charts, and maps.

Building Advanced Admin Reporting in React

 is useful for displaying different representations of the query, namely the internal JSON format (

), the internal format with rule identifiers stripped out (

 clause only), and a parameterized format useful for interacting with APIs.

Besides the format of the query representation, 

 has a couple of other options that can be set. 

 is a function that will process rule values, and 

 will quote field names with the provided quote character in SQL mode.

---
title: Formatting the query
description: Preparing for the server setup by processing the output of the query builder into database-ready SQL
privateVideoUrl: https://fullstack.wistia.com/medias/cwzge3ch9u
---

# Formatting the query

## The `formatQuery` function

In this lesson we'll focus on the `formatQuery` function exported by `react-querybuilder`. `formatQuery` is useful for displaying different representations of the query, namely the internal JSON format (`"json"`), the internal format with rule identifiers stripped out (`"json_without_ids"`), SQL format (`"sql"`; the `WHERE` clause only), and a parameterized format useful for interacting with APIs.

Besides the format of the query representation, `formatQuery` has a couple of other options that can be set. `valueProcessor` is a function that will process rule values, and `quoteFieldNamesWith` will quote field names with the provided quote character in SQL mode.

## The `valueProcessor` function

The `valueProcessor` function is useful when your database engine requires special handling of certain value types. For example, the Oracle RDBMS does not have a native Boolean column type, so people typically use `VARCHAR2` with the values `'Y'` and `'N'` representing `true` and `false`, respectively. The default `valueProcessor` function will use `TRUE` and `FALSE`, so we would need to convert that to `'Y'` and `'N'`. Another value type that typically needs special handling is the date type. Most database engines have their own special syntax or functions for dates.

To demonstrate the capabilities of the `valueProcessor` function, we'll wrap the `defaultValueProcessor` from `react-querybuilder` and adjust the output to show what really happens to date fields on the server.  Create a file called `valueProcessor.ts` in the `client/src/` folder.

Preparing for the server setup by processing the output of the query builder into database-ready SQL

Learn

The newline Guide to Building Your First GraphQL Server with Node and TypeScript

Teach

Amelia Wattenberger

Author of Fullstack D3

Community

Building Advanced Admin Reporting in React

Welcome: Introduction

Introduction:

Start Here

Module 0: Getting started

Introduction: (1:18)

Introduction to React Query Builder

Lesson 1: (11:12)

Initializing the query builder

Lesson 2: (4:13)

Fields and operators

Module 1: Configuration

Lesson 1: (7:20)

Translations

Lesson 2: (6:58)

Other customizations

Lesson 3: (4:35)

Built-in input types

Lesson 4: (11:19)

Custom value editors

Module 2: Integrating with an API

Lesson 1: (5:24)

Formatting the query

Lesson 2: (12:38)

Server setup, part 1

Lesson 3: (16:28)

Server setup, part 2

Lesson 4: (6:10)

Fetching data

Lesson 5: (11:37)

Displaying data in the grid

Lesson 6: (7:05)

Displaying data in a chart

Module 3: Geographic data

Lesson 1: (2:28)

Adding a new API endpoint

Lesson 2: (7:33)

Preparing a new data set

Lesson 3: (9:22)

Displaying the new data

Lesson 4: (11:23)

Displaying a map

Module 4: Bulk edits

Lesson 1: (12:15)

Setting up the bulk editor

Lesson 2: (7:54)

Enhancing the bulk editor

Lesson 3: (10:01)

Finalizing the bulk editor

Formatting the query

The formatQuery function#

The valueProcessor function#

The `formatQuery` function#

The `valueProcessor` function#