Question

MySQL – Workbench (PHP):

Tables:

1. TUsers (One to many relationship with TCompanies):
   • TUsers_CompanyID (FOREIGN KEY)
   • TUsers_UserName
   • TUsers_UserPassword
   • TUsers_ID (UNIQUE)
2. TCompanies:
   • TCompanies_CompanyName
   • TCompanies_CompanyContactNumber
   • TCompanies_CompanyAddress
   • TCompanies_ID (UNIQUE)

Is it possible to link multiple tables in a relational database without using the JOIN, or INNER JOIN query commands, without duplicating data in tables?

Thus speaking even another way of creating a relationship that makes the one table “point” to the other’s data.

So that one can query the following and successfully retrieve all the data from both tables at once:

MySQL:SELECT * FROM TUsers;

See example above..

Answer 1

You can do it without “appearing” to use a join (ie, the word JOIN won’t be in the query), but MySQL will still perform a JOIN…

SELECT *
FROM TUsers, TCompanies 
WHERE TUsers_CompanyID=TCompanies_ID;