Replacing Name with the Respective Code

Question

Hi,
I have one table called CodeName, which contains Code and Names of Products.
Eg: 1 Table
2 Chair
3 Car
I have another table called NamePrice, which contains Name of the products and their Price.
Eg: Table 495
Chair 250
Car 200000
My Requirement is to replace the Codes, instead of Names in NamePrice table, which should be compared from CodeName table.
Eg: 1 495
2 250
3 200000
I am new to SQL. I just want to know, can we use for loops or while loops to solve the above problem.
If not, how can we do ?
Please give me some links of SQL to learn it in online.
Regards
VaradhRAJAN

Answer 1

This?
with
code_name as
   (select 1 num, 'table' nm from dual union all
    select 2, 'chair' from dual union all
select 3, 'car' from dual),
name_price as
   (select 'table' nm, 495 pr from dual union all
select 'chair', 250 from dual union all
select 'car', 200000 from dual)
select cn.num, np.pr
from code_name cn, name_price np
where cn.nm = np.nm
       NUM         PR
         1        495
         2        250
         3     200000