Question

MySQL – Workbench (PHP):

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?

For instance I have two tables with collumns:

1. TUsers (Related to TCompanies,1-n)

   • ID_TUsers (UNIQUE ID)
   • TUsers_UserName
   • TUSers_UserContactNumber

2. TCompanies

   • ID_TCompanies (UNIQUE ID)
   • TCompanies_CompanyName
   • TCompanies_CompanyContactNumber

In essence; I want to access COMPANY data from the USERS table without doing a JOIN query between the two tables…

Answer 1

It depends what you are trying to do, you can use a where clause but you don’t seem to have any fields which indicate a join between the two tables. Is there a foreign key in either of the two tables?

Since you now mention you have a TUsers_CompanyID in the TUsers table you can do the following:

SELECT TUsers.TUsers_UserName, TCompanies.TCompanies_CompanyName FROM TUsers, TCompanies WHERE TUsers.TUsers_CompanyID = TCompanies.ID_TCompanies;