Parent Child table record - Building SQL query

Question

Here is my table and data of these tables

Table name: Code

CID Code
1   abc
2   def
3   xyz

Table Name : Detai

Answer 1

Sounds like you're looking for the cartesian product:

SELECT
    c.CID * d.ID AS ID,
    c.Code,
    CASE
        WHEN c.CID = d.CID THEN d.Name
        ELSE NULL
    END AS Name
FROM Code c
CROSS JOIN Details d

Although cartesian products are quite slow for larger tables... so be sure that this is what you really want.