Question: 20.When creating a table alias in SQL, you must separate the table's proper name from its alternate name with a period. A. TrueB. False 21.Maria

20.When creating a table alias in SQL, you must separate the table's proper name from its alternate name with a period.

A. TrueB. False

21.Maria adds a subquery preceded by ALL to her SQL SELECT command. This subquery's condition is true _____.

A. only if it satisfies all values produced by the subqueryB. when the subquery includes a WHERE clauseC. if it satisfies any value (one or more) produced by the subqueryD. automatically

22.All rows from both tables are included regardless of whether they match rows from the other table in a(n) _____.

A. normal joinB. inner joinC. combined join

D. full outer join

23.Which SQL commands are used to create a new table from an existing table?

A. SHOW, then SELECTB. CREATE TABLE, then INSERTC. INSERT, then CREATE TABLED. SELECT, then SHOW

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