Oracle Exam 1Z0-071 Topic 12 Question 114 Discussion

Actual exam question for Oracle's 1Z0-071 exam

Question #: 114
Topic #: 12

[All 1Z0-071 Questions]

Examine the description of the CUSTOMERS table:

Which three statements will do an implicit conversion?

ASELECT * FROM customers WHERE insert_date=DATE'2019-01-01';

BSELECT * FROM customers WHERE customer_id='0001';

CSELECT * FROM customers WHERE TO_DATE(insert_date)=DATE'2019-01-01';

DSELECT * FROM customers WHERE insert_date'01-JAN-19';

ESELECT * FROM customers WHERE customer_id=0001;

FSELECT * FROM customers WHERE TO_CHAR(customer_id)='0001';

Show Suggested Answer

Suggested Answer: B

B . True. This statement will execute successfully because it has a single column in the SELECT statements combined with UNION, and the ORDER BY clause is referencing a valid column in the result set.

A is incorrect because it uses an ORDER BY clause with two columns, which is not allowed when the SELECT statements have only one column each. C is incorrect for the same reason as A; it references columns that do not exist in the result set. D is incorrect because it attempts to ORDER BY a second column, which does not exist in the result of the union.

by Adelle at Mar 22, 2025, 06:07 PM

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Mitsue

2 months ago

I'm just hoping I don't accidentally type 'SELECT * FROM customers WHERE customer_id=0000;' and end up with the entire database!

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Shaniqua

23 days ago

User 3: C) SELECT * FROM customers WHERE TO_DATE(insert_date)=DATE'2019-01-01';

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Mohammad

1 months ago

User 2: That's a safe option.

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Tamala

1 months ago

User 1: A) SELECT * FROM customers WHERE insert_date=DATE'2019-01-01';

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Alline

2 months ago

Wow, these SQL questions are like a language of their own! I feel like I need to learn a whole new vocabulary just to pass this exam.

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Ronald

2 months ago

Option F is also a good one, as the TO_CHAR function will convert the numeric customer_id to a string for the comparison.

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Gerald

1 months ago

Option F is also a good one, as the TO_CHAR function will convert the numeric customer_id to a string for the comparison.

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Dana

1 months ago

F) SELECT * FROM customers WHERE TO_CHAR(customer_id)='0001';

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Paul

1 months ago

B) SELECT * FROM customers WHERE customer_id='0001';

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Carin

1 months ago

A) SELECT * FROM customers WHERE insert_date=DATE'2019-01-01';

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Aleshia

2 months ago

I think C is also a valid answer, as the TO_DATE function will convert the insert_date string to a date type for the comparison.

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Dorcas

2 months ago

I believe statement C will also do an implicit conversion because it uses the TO_DATE function.

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Galen

2 months ago

Options B and E will do an implicit conversion, as the customer_id column is likely a numeric type, and the literals '0001' and 0001 will be converted to the appropriate numeric value.

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