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Introduction to SQL

Introduction to SQL
SUM, AVG, MIN, and MAX can only be used with numeric columns.

True
False

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Introduction to SQL
Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?

Data Definition Language(DDL)
None
Both of above
Data Manipulation Language(DML)

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Introduction to SQL
SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions.

False
True

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Introduction to SQL
Scalar aggregate are multiple values returned from an SQL query that includes an aggregate function.

True
False

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Introduction to SQL
The command to remove rows from a table 'CUSTOMER' is:

DROP FROM CUSTOMER ...
REMOVE FROM CUSTOMER ...
UPDATE FROM CUSTOMER ...
DELETE FROM CUSTOMER WHERE ...

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Introduction to SQL
What is the meaning of LIKE '%0%0%'

Feature has two 0's in it, at any position
Feature begins with two 0's
Feature ends with two 0's
Feature has more than two 0's

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