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6.6

SQL Query

Asked by FHESSE in Databases Miscellaneous

Tags: sql

How do I write an SQL-query that generates these results:
OrderID   UserID      UserName
--------- ----------- --------------
010101    ASMITH      Anthony Smith
010200    (null)      (null)

from these tables:
ORDER
-----
OrderID    INTEGER    (Primary Key) Not Null
UserID     VARCHAR(30)

USER
-----
UserID     VARCHAR(30) (Primary Key) Not Null
UserName   VARCHAR(100)

The problem is the null userid-entry in order which
excludes this Query:
  SELECT orderid, order.userid, user.username
  FROM order, user
  WHERE order.userid = user.userid
as it doesn't return a username.
[+][-]08/06/97 03:45 AM, ID: 1025204Accepted Solution

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About this solution

Zone: Databases Miscellaneous
Tags: sql
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Solution Provided By: baskomurcu
Participating Experts: 1
Solution Grade: C
 
 
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