A、You can join a maximum of two tables through an equijoin.

B、You can join a maximum of two columns through an equijoin.

C、You specify an equijoin condition in the SELECT or FROM clauses of a SELECT statement.

D、To join two tables through an equijoin, the columns in the join condition must be primary key and foreign key columns.

E、You can join n tables (all having single column primary keys) in a SQL statement by specifying a minimum of n-1 join conditions.