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Advanced SQL

Answer: A

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12.

Subqueries can be nested multiple times.

Answer: A

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13.

A correlated subquery is where the outer query depends on data from the inner query.

Answer: B

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14.

ROLLBACK WORK asks SQL to empty the log file.

Answer: A

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15.

What type of join is needed when you wish to include rows that do not have matching values?

Answer: C

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16.

There should be one condition within the WHERE clause for each pair of tables being joined.

Answer: A

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17.

A function returns one value and has only output parameters.

Answer: B

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18.

The UNION clause is used to combine the output from multiple queries together into a single result table.

Answer: A

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19.

The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T ;

Answer: D

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Answer: A

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