1. Introduction
 
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Introduction
In This Guide
The QUEL Reference Guide provides detailed descriptions of all QUEL statements and provides examples of the correct use of QUEL statements and features.
This guide identifies QUEL as the Ingres proprietary query language and introduces features of QUEL's interactive and embedded releases. It describes QUEL data types and QUEL statements. The guide also discusses:
Statement syntax
Program structure
Host language variables
Cursors, transaction processing
Program status information
Error handling
Retrieve statement
Repeat queries