Coalesce Get Duplicate Record - Mailing list pgsql-sql

From Lonh SENG
Subject Coalesce Get Duplicate Record
Date
Msg-id 003801c1c5ba$b06543e0$05a00017@idlonh
Whole thread Raw
List pgsql-sql
Hi all,
 
    I have got the idea of using coalesce from admin list.
    It's cool.
    For this moment, I want to know something more you.
    Why I have got duplication record as shown in the result.txt attached file?
    The other on is the script I used. Of course, I need some help from you urgently.
 
    Your comment will be gratefully appreciated.
    Thanks in advance
 
Best Regards,
 
Lonh SENG
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