Account:

Deposit:

Given the tables above (for accounts and deposits), what is the result of the following SQL query?

SELECT Acct_Num
FROM Deposit
WHERE Amount = ALL (SELECT Amount FROM Deposit);

Question

Account:

Deposit:

Given the tables above (for accounts and deposits), what is the result of the following SQL query?

SELECT Acct_Num
FROM Deposit
WHERE Amount >= ALL (SELECT Amount FROM Deposit);

BlackTom AI · Accepted Answer

To evaluate this query, we first identify what the subquery returns and how the comparison operates.

Option 1: 105 — This is the only account whose deposit amount equals the maximum value in the Deposit table. The query checks where Amount is greater than or equal to ALL amounts in the table, which selects the maximum amount(s); since 10000 is the largest, Acct_Num 105 is returned.

Option 2: 102 — The deposit amounts shown include 500 and 200 for Acct_Num 102, which are not the maximum. Therefore, 102 cannot satisfy the condition Amount >= ALL (SELECT Amount FROM Deposit).

Option 3: 104 — The deposits for Acct_Num 104 amount to 1000, which is also not the maximum (10000). Thus, 104 does not meet the criterion.

Option 4: 105, 104, 102 — This suggests multiple accounts share the maximum amount. In the data provided, only one deposit has the maximum amount (10000 for 105); 104 and 102 have smaller amounts, so this option is incorrect.

Option 5: 102, 104 — Similar to the previous, this lists two accounts that do not both have the maximum amount, so it is not a correct result set.

In summary, the query returns the account(s) whose deposit Amount is the highest across all rows in Deposit. Given the values, that maximum is 10000 associated with Acct_Num 105, making option 1 the correct choice.

ECON3310001.1251 Quiz 8: Database Design

Account: Deposit: Given the tables above (for accounts and deposits), what is the result of the following SQL query? SELECT Acct_Num FROM Deposit WHERE Amount >= ALL (SELECT Amount FROM Deposit);

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