To answer this question, the user needs to know about Teradata's Parallel Environment.
In Teradata's Parallel Environment, the response time is determined by the slowest AMP involved in the process. This is because the Teradata system is designed to ensure that all AMPs are involved in processing a query or transaction, and the system waits for the slowest AMP to complete its task before returning the results to the user.
To solve this question, the user needs to know how the SQL SELECT statement and concatenation operator (||) work. The SELECT statement retrieves data from a database table and returns a result set. The concatenation operator is used to combine two or more strings into a single string.
The given SQL query concatenates three columns (address1, address2, and address2) using the concatenation operator and then renames the concatenated column as "Address".
The resulting query output will contain only one column named 'Address' that is the result of concatenating the three columns. Therefore, the correct answer is:
The Answer is: B. 1
What output will the follwing statement produce? Select NVL2(NULL,'NOT NULL', NULL) from dual;