Generating queries for 2 (or more) databases

Here you can find tricks for executing this task

Store queries in a database

Here we describe the case when all users of some web application create their own queries and would like to store those queries in some database.

How to save/load queries to/from database

Find out how to change this default behavior and save/load queries to any other storage

Connect to your database

This article describes how to modify our sample project to make it work with your own database instead of Northwind DB used by default.

Query with OR operators

In this article, you will learn how to build queries that contain both AND and OR operators.

Query with a subquery

How to build queries with subqueries using EasyQuery.

Create a query with sub-query by code

Example with code

Working with several data models

All EasyQuery demos works with one data model (and one database which corresponds to that model). Here we are going to describe how to add a selector that switches between two data models on your view/page and then how to setup a custom "model loader" to handle GetModel requests propertly. To make it possible to switch between these two models we need some selector element on our page. The only problem here - is to switch the database connection accordingly the the switches between the models. Now when the user selects an item in our model selector element on the client-side - our server-side code automatically loads the selected model and connects to a proper database (when necessary)..

Common SQL queries

Query.Error class

Query exception class.

Query class

Represents internal query structure.

Query with table joins

An example of query which require to define a table join(s) in case of using SQL. It's much more simple with EasyQuery.

Query class

Represents internal query structure.

Paging in query results

Paging can make your work with query more convenient. And here is detailed instruction on how to use it.

Simple query over one table

How to build a simple query with 1-2 conditions over one table (entity)

Navigate through query conditions

A code snippet which demonstrates how to run through all conditions in your query

Query saving and loading

EasyQuery has built-in means for query saving and loading. Here we are going to describe the most common approaches for solving this task

Using parameters in query conditions

This article explains how to work with parameterized conditions.

Exporting query results

Detailed instruction on how to perform additional functionality while dealing with EasyQuery results.

How to add an extra condition to your query

Two possible ways of resolving this task