2 Ways to Concatenate a String and a Number in Oracle

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In Oracle Database, we can concatenate strings and numbers with the CONCAT() function or the pipe concatenation operator (||).

The CONCAT() Function

Here’s an example that uses the CONCAT() function:

SELECT CONCAT('Comments: ', 234)
FROM DUAL;

Result:

Comments: 234

The Pipe Concatenation Operator (||)

Here’s how to do the same thing using the concatenation operator (||):

SELECT 'Comments: ' || 234 
FROM DUAL;

Result:

Comments: 234