Question

Can anyone give me an example of a sql inner join between 2 tables when using a partial key?

For example:

======
Table1
======

StudentID: STUDENT00001, STUDENT00002, STUDENT00999


======
Table2
======

ID: 00001, 00002, 00999

My code so far:

SELECT *
FROM Table1 
  INNER JOIN Table2
    ON Table1.StudentID = ***how do i add a prefix here?*** Table2.ID

THANKS!

Answer 1

Use the CONCAT() function in MySQL.

SELECT *
FROM Table1 
INNER JOIN Table2
ON Table1.StudentID = CONCAT('STUDENT',Table2.ID)