Concatenation of strings in PL/SQL

Prerequisite – PL/SQL Introduction

In PL/SQL code groups of commands are arranged within a block. A block group related declarations or statements. In declare part, we declare variables and between begin and end part, we perform the operations.

Given two strings and the task is to concatenate them and store it in another string.

Examples:

Input: str1 = ' RAMESH', str2 = 'SURESH'
Output: RAMESH SURESH

Input: str1 = ' Ramesh is a good boy', str3 = 'and',
       str2 = 'Suresh is a brilliant student'.
Output: Ramesh is a good boy and Suresh is a brilliant student

Approach is to use the concatenation operator i.e. || .

Below is the required implementation:

DECLARE
    --Here variables are str, str1, str2 and v
    str  VARCHAR2(40) := 'Ramesh is a good boy';
    str1 VARCHAR2(40) := 'Suresh is a brilliant student';
    str2 VARCHAR2(40) := 'and';
    v    VARCHAR2(100);
BEGIN
    v := str
         ||' '
         || str2
         ||' '
         ||str1;

    dbms_output.Put_line(v);
END;
-- Program End

Output:

Ramesh is a good boy and Suresh is a brilliant student

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