Oracle
1Z0-061 · Question #55
1Z0-061 Question #55: Real Exam Question with Answer & Explanation
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Question
Which two statements are true regarding the count function?
Options
- AThe count function can be used only for CHAR, VARCHAR2, and NUMBER data types.
- BCount (*) returns the number of rows including duplicate rows and rows containing null value in any
- CCount (cust_id) returns the number of rows including rows with duplicate customer IDs and NULL
- DCount (distinct inv_amt) returns the number of rows excluding rows containing duplicates and NULL
- EA select statement using the COUNT function with a DISTINCT keyword cannot have a where clause.
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