Skip Headers

Oracle9i SQL Reference
Release 2 (9.2)

Part Number A96540-02
Go to Documentation Home
Go to Book List
Book List
Go to Table of Contents
Go to Index
Go to Master Index
Master Index
Go to Feedback page

Go to previous page Go to next page
View PDF




Text description of functions36.gif follows
Text description of concat


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 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


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;
Hall's job category is SA_REP