ColdFusion Developer's Guide

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Optimizing database use
Poor database design and incorrect or inefficient use of the database are among the most
common causes of inefficient applications. Consider the different methods that are available
for using databases and information from databases when you design your application. For
example, if you need to average the price of a number of products from an SQL query, it is
more efficient to use SQL to get the average than to use a loop in ColdFusion.
Two important ColdFusion tools for optimizing your use of databases are the cfstoredproc
tag and the cfquery tag cachedWithin attribute.
Using stored procedures
The cfstoredproc tag lets ColdFusion use stored procedures in your database management
system. A stored procedure is a sequence of SQL statements that is assigned a name,
compiled, and stored in the database system. Stored procedures can encapsulate programming
logic in SQL statements, and database systems are optimized to execute stored procedures
efficiently. As a result, stored procedures are faster than cfquery tags.
You use the cfprocparam tag to send parameters to the stored procedure, and the
cfprocresult tag to get the record sets that the stored procedure returns.
The following example executes a Sybase stored procedure that returns three result sets, two of
which the example uses. The stored procedure returns the status code and one output
parameter, which the example displays.
The output param value: '#foo#'
The Results Information
356 Designing and Optimizing a ColdFusion Application