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Chapter 19: Introduction to Databases and SQL
You interpret this statement as "Select the columns FirstName and LastName from the table
employees where the DeptID is 3".
In addition to with reading data from a table, you can write data to a table using the SQL
INSERT statement. The following statement adds a new row to the employees table:
INSERT INTO employees(EmpID, LastName, Firstname)
VALUES(51, 'Doe', 'John')
Basic SQL syntax elements
The following sections briefly describes the main SQL command elements.
Statements
A SQL statement always begins with a SQL verb. The following keywords identify commonly
used SQL verbs:
Statement clauses
Use the following keywords to refine SQL statements:
Operators
The following basic operators specify conditions and perform logical and numeric functions:
Keyword
Description
SELECT Retrieves
the specified records.
INSERT
Adds a new row.
UPDATE
Changes values in the specified rows.
DELETE
Removes the specified rows.
Keyword
Description
FROM
Names the data tables for the operation.
WHERE
Sets one or more conditions for the operation.
ORDER BY
Sorts the result set in the specified order.
GROUP BY
Groups the result set by the specified select list items.
Operator Description
AND
Both conditions must be met
OR
At least one condition must be met
NOT
Exclude the condition following
LIKE
Matches with a pattern
IN
Matches with a list of values
BETWEEN
Matches with a range of values
=
Equal to
Summary of Contents for COLDFUSION MX 61-DEVELOPING COLDFUSION MX
Page 1: ...Developing ColdFusion MX Applications...
Page 22: ...22 Contents...
Page 38: ......
Page 52: ...52 Chapter 2 Elements of CFML...
Page 162: ......
Page 218: ...218 Chapter 10 Writing and Calling User Defined Functions...
Page 250: ...250 Chapter 11 Building and Using ColdFusion Components...
Page 264: ...264 Chapter 12 Building Custom CFXAPI Tags...
Page 266: ......
Page 314: ...314 Chapter 14 Handling Errors...
Page 344: ...344 Chapter 15 Using Persistent Data and Locking...
Page 349: ...About user security 349...
Page 357: ...Security scenarios 357...
Page 370: ...370 Chapter 16 Securing Applications...
Page 388: ...388 Chapter 17 Developing Globalized Applications...
Page 408: ...408 Chapter 18 Debugging and Troubleshooting Applications...
Page 410: ......
Page 426: ...426 Chapter 19 Introduction to Databases and SQL...
Page 476: ...476 Chapter 22 Using Query of Queries...
Page 534: ...534 Chapter 24 Building a Search Interface...
Page 556: ...556 Chapter 25 Using Verity Search Expressions...
Page 558: ......
Page 582: ...582 Chapter 26 Retrieving and Formatting Data...
Page 668: ......
Page 734: ...734 Chapter 32 Using Web Services...
Page 760: ...760 Chapter 33 Integrating J2EE and Java Elements in CFML Applications...
Page 786: ...786 Chapter 34 Integrating COM and CORBA Objects in CFML Applications...
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