You must use a comma or a period to separate a table name from its alias.
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Q9: When joining tables,it is always necessary to
Q11: You can join tables by using a
Q12: When the innermost subquery is evaluated,a permanent
Q12: You can use the IN operator to
Q13: One reason for using an alias is
Q15: You can join three tables together but
Q16: It is permissible to qualify all column
Q17: Occasionally,a self-join might involve the primary key
Q18: Oracle supports the INTERSECT operator.
Q19: To ensure that query results are listed
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