A GUIDE TO SQL
A GUIDE TO SQL
9th Edition
ISBN: 9781305897397
Author: Pratt
Publisher: CENGAGE L
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Chapter 8, Problem 5RQ

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Concatenating columns in Oracle:

  • User can combine values in character column by using two vertical lines (||).
    • The two vertical lines is placed between the column names.
  • Example for concatenating two columns is given below:

  SELECT STUDENT_ID, RTRIM(FIRST_NAME)||' '||RTRIM(LAST_NAME) AS STUDENT_NAME FROM STUDENT;

  • The above query is used to display the student ID, student name by concatenating the student first name and last name for each student from “STUDENT” table.
    • From the given query, the “RTRIM” means right trim which is used to remove any additional spaces inserted at the end of the value.
    • The “STUDENT_NAME” is computed by combining the first name and last name of student with the help of “AS” operator.

Concatenating columns in Access:

  • User can combine values in character column by using “&” symbol.
    • Since the Access will trim the column automatically, user need not to trim the columns in the table.
  • Example for concatenating two columns is given below:

  SELECT STUDENT_ID, FIRST_NAME&''&LAST_NAME AS STUDENT_NAME FROM STUDENT;

  • The above query is used to display the student ID, student name by concatenating the student first name and last name for each student from “STUDENT” table...

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