How to assign multiple variable and string in a variable in postgresql

Question

I want to assign multiple values or string or their combination to a postgresql variable. What I want to achieve is something like this done in DB2:

STRING '('              DELIMITED BY SIZE           
       variable_1       DELIMITED BY SPACE          
       ' '              DELIMITED BY SIZE           
       variable_2                        
                        DELIMITED BY SIZE           
       variable_3       DELIMITED BY SIZE           
       ' ) '            DELIMITED BY SIZE           
       X'10'            DELIMITED BY SIZE           
     INTO    var_string                            
 END-STRING

In the same way i have some variables and string which I want to add in a variable "var_string". Is it possible?

Answer 1

Try CONCAT Function

 DECLARE var_string varchar;
 var_string:= concat(variable_1, variable_2,variable_3);