Skip Headers
Oracle® Database SQL Reference
10g Release 2 (10.2)

Part Number B14200-02
Go to Documentation Home
Home
Go to Book List
Book List
Go to Table of Contents
Contents
Go to Index
Index
Go to Master Index
Master Index
Go to Feedback page
Contact Us

Go to previous page
Previous
Go to next page
Next
PDF · Mobi · ePub

CONCAT

Syntax

Description of concat.gif follows
Description of the illustration concat.gif

Purpose

CONCAT returns char1 concatenated with char2. Both char1 and char2 can be any of the datatypes CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The string returned is in the same character set as char1. Its datatype depends on the datatypes of the arguments.

In concatenations of two different datatypes, Oracle Database returns the datatype that results in a lossless conversion. Therefore, if one of the arguments is a LOB, then the returned value is a LOB. If one of the arguments is a national datatype, then the returned value is a national datatype. For example:

This function is equivalent to the concatenation operator (||).

See Also:

"Concatenation Operator" for information on the CONCAT operator

Examples

This example uses nesting to concatenate three character strings:

SELECT CONCAT(CONCAT(last_name, '''s job category is '),
      job_id) "Job" 
   FROM employees 
   WHERE employee_id = 152;
 
Job
------------------------------------------------------
Hall's job category is SA_REP