Performing Pattern Matching; Filtering Data Based On Multiple Conditions - MACROMEDIA COLDFUSION 4.5-DEVELOPING WEB Develop Manual

Chapter 4: Retrieving and Formatting the Data You Want

Performing Pattern Matching

Use the SQL LIKE operator and SQL wildcard strings in a SQL WHERE clause when you
want to compare a value against a character string field so that the query returns
database information based on commonalities. This is known as pattern matching and
often used to query databases.
For example, to return data for employees whose last name starts with AL and ends
with anything, you would build a query that looks like this:
<CFQUERY NAME="GetEmployees" DATASOURCE="CompanyInfo">
SELECT FirstName, LastName,
StartDate, Salary, Contract
FROM
WHERE
</CFQUERY>
The LIKE operator tells the database that the string that follows should be used
for pattern matching.
The LIKE operator tells the database that the string that follows should be used
for pattern matching.
If you placed a wildcard before and after AL, you would retrieve any record in
that column that contains AL.
Surround strings in SQL statements with single quotes (').
When comparing a value against a numeric field, don't surround the value with
single quotes (').
Note

Filtering Data Based on Multiple Conditions

Combine a SQL WHERE clause with a SQL AND clause in your queries when you want
to retrieve data based on the results of more than one comparison.
For example, to return data for contract employees who earn more than $50,000, you
would build a query that looks like this:
<CFQUERY NAME="GetEmployees" DATASOURCE="CompanyInfo">
SELECT FirstName, LastName
StartDate, Salary, Contract
FROM
WHERE
AND
</CFQUERY>
Employees
LastName LIKE 'AL%'
By default, SQL is not case-sensitive.
Employees
Contract = 'Yes'
Salary > 50000
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