Contents Index Selecting all columns from a table Renaming columns in query results

ASA SQL User's Guide
  Queries: Selecting Data from a Table
    The SELECT list: specifying columns

Selecting specific columns from a table


To SELECT only specific columns in a table, use this syntax:

SELECT column_name  [, column_name  ]...
FROM table-name

You must separate each column name from the column name that follows it with a comma. For example:

SELECT emp_lname, emp_fname
FROM employee
Rearranging the order of columns 

The order in which you list the column names determines the order in which the columns are displayed. The two following examples show how to specify column order in a display. Both of them find and display the department names and identification numbers from all five of the rows in the department table, but in a different order.

SELECT dept_id, dept_name
FROM department
dept_id dept_name
100 R & D
200 Sales
300 Finance
400 Marketing
... ...
SELECT dept_name, dept_id
FROM department
dept_name dept_id
R & D 100
Sales 200
Finance 300
Marketing 400
... ...

Contents Index Selecting all columns from a table Renaming columns in query results