Prepare statemnt using concat() in mysql giving error [closed]

Question

The given below code is part of stored procedure (mysql 5.5.20):

prepare stmnt1 from concat('insert into ' , tableName ,  '(employee_id , administrator_id) values(? , ?) ' ) ;                   
set @a = 19 ;
set @b = 11;
execute stmnt1 using @a , @b ;

tableName is local variable

When i create procedure i get this error :

#1064 - You have an error in your SQL syntax; check the manual that corresponds to         
your MySQL server version for the right syntax to use near 'concat('insert into ' , 
tableName ,  '(employee_id , administrator_id) values(? ' at line 23

It seems that this kind of statement is not possible in mysql.
Please help.Thanks.

Answer 1

Try this one please.

set @sql = concat('insert into ' , tableName ,  '(employee_id , administrator_id) values(? , ?) ' ) ; 
prepare stmnt1 from @sql;                
set @a = 19 ;
set @b = 11;
execute stmnt1 using @a , @b ;

deallocate prepare stmnt1;