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1. Login in to the mysql client using the login name and password provided by your instructor (if not already logged in). 2. View the existing databases that the MySQL Server is maintaining. SHOW DATABASES; 3. Utilize the photo_album database. USE photo_album; ---- If Need be, recreate the database and load the SQL data in that will be used for this lab CREATE DATABASE photo_album; SOURCE /tmp/photo_album.sql; 4. Query the database to display the active primary customer (email, first and last name) and all the associated active login names associated with that customer. SELECT customers.email_customer, customers.fname, customers.lname, logins.login_name  FROM customers, logins WHERE customers.email_customer = logins.email_customer  AND customers.active_customer = 'True'  AND logins.active_login = 'True';

A right join is another type of outer join, written using the RIGHT JOIN keywords. Every RIGHT JOIN corresponds to an equivalent LEFT JOIN. The only difference is that the roles of the tables are reversed relative to the roles in a RIGHT JOIN. That is, the right table is the reference table, so a RIGHT JOIN produces a result for each row in the right table, whether or not it has any match in the left table. The previous example showed the result of a LEFT JOIN . The example below is the same statement, but with a RIGHT JOIN: mysql> SELECT Name, Language -> FROM Country -> RIGHT JOIN CountryLanguage -> ON Code = CountryCode -> WHERE CountryCode IS NULL; Empty set (#.## sec) Note that the join is now being referenced to the right table CountryLanguage, which yields no results (empty set). Syntactically, converting a left join to a right join requires only that the order be reversed in which the tables are named. It isn't necessary to also reverse the

Whereas an INNER JOIN will find combinations of matching rows from joined tables, the OUTER JOIN also finds the instances where a row in one table has no match in another table. An OUTER JOIN find matches (just like an INNER JOIN), but also identifies mismatches. Two forms of outer joins are LEFT JOIN and RIGHT JOIN . These do not use the comma separator or the INNER JOIN keywords. They each answer the same kinds of questions, but differ slightly in their syntax. That is a LEFT JOIN can always be re-written into a equivalent RIGHT JOIN. (In the following sections, the terms left table and right table refer to the tables named first and second in the FROM clause, respectively.)  Left Outer Join A left join is a type of outer join, written using the LEFT JOIN keywords. A left join treats the left table (the first one named) as a reference table and produces output for each row selected from it, whether or not the row is matched by rows in the right table. Like a join writt

What is a Join? The SELECT queries shown thus far in this training guide retrieve information from a single table at a time. However, not all questions can be answered using just one table. When it's necessary to draw on information that is stored in multiple tables, use a join condition—an operation that produces a result by combining (joining) information in one table with information in another. The contents of two original tables are shown below. These tables can be joined together using a SELECT query which retrieves data from more than one table at a time. table1 table2 +----+----+ | i1 | c1 | +----+----+ | 1 | a | | 2 | b | | 3 | c | +----+----+ 3 rows in set (#.## sec) +----+----+ | i2 | c2 | +----+----+ | 2 | c | | 3 | b | | 4 | a | +----+----+ 3 rows in set (#.## sec) mysql> SELECT * FROM table1 JOIN table2; +----+----+----+----+ | i1 | c1 | i2 | c2 | +----+----+----+----+ | 1 | a | 2 | c | | 2 | b | 2 | c |