SQL Keywords: SELECT |
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Introduction |
The SELECT keyword is used to select one or more fields from a table. The primary formula to follow is:
SELECT What FROM WhatObject;
The What factor of our syntax can be the name of a column of a table or query. The WhatObject factor can be the name of a table or a query.
Here is an example that selects one field from a table:
SELECT LastName FROM Employees;
Here is an example that selects all fields from a table:
SELECT * FROM Employees;
Alternatively, you can precede the * with the ALL keyword. Here is an example:
SELECT ALL * FROM Employees;
Here is an example that selects a few fields from a table:
SELECT FirstName, LastName, HourlySalary FROM Employees;
Here is an example that includes the name of a table in square brackets:
SELECT * FROM [Employees];
Here is an example that uses the period to qualify the name of each field from its table:
SELECT Employees.FirstName, Employees.LastName FROM Employees;
Here is an example that delimits the name of each object in square brackets:
SELECT [Employees].[FirstName], [Employees].[LastName] FROM [Employees];
See Also |
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