Check out example codes for "how to select multiple columns from different tables in mysql". It will help you in understanding the concepts better.

Code Example 1

-- MySQL 
-- t1 = table1
-- dt2 = column of table
SELECT t1.dt2, t2.dt4, t2.dt5, t2.dt3 #get dt3 data from table2
FROM table1 t1, table2 t2 -- Doesn't need to have t1, or t2
WHERE t1.dt2 = 'asd' AND t2.dt4 = 'qax' AND t2.dt5 = 456

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