A Guide to SQL
A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Chapter 4, Problem 12CAT
Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

  • The given query is used to display each student ID from “STUDENT” table.

SQL Wildcard:

  • There are two wildcard symbol are used for Oracle and SQL Server.
  • One wildcard symbol is percent (“%”) and another one is underscore (“_”).
    • The percent sign “%” is used to indicate any set of characters.
    • The underscore sign “_” is used to indicate any individual character.

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A Guide to SQL

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