How are null values treated when one or more appears during the execution of a group function?
QUESTION: How are null values treated when one or more appears during the execution of a group function?
Category: Data Modeling and Database Design
Data Modeling and Database Design
The city government has collected the following data on annual sales tax
QUESTION: The city government has collected the following data on annual sales tax collections and new car registrations: Determine the following: (a) The least-squares regression…
What do the ALL and ANY operators do when used in a subquery?
QUESTION: “What do the ALL and ANY operators do when used in a subquery?”
What is the SQL operator (i.e., keyword) used in conjunction with pattern matching?
QUESTION: “What is the SQL operator (i.e., keyword) used in conjunction with pattern matching?”
What is the result of an attempt to add, subtract, multiply, or divide two number fields, one of which
QUESTION: What is the result of an attempt to add, subtract, multiply, or divide two number fields, one of which contains a null value?
Which comparison operators can be used when searching for null values? Which comparison operators
QUESTION: Which comparison operators can be used when searching for null values? Which comparison operators cannot be used when searching for null values? What is…
What is the difference between a character field that contains a null value and a character field that
QUESTION: What is the difference between a character field that contains a null value and a character field that contains a single blank space?
What is meant by the term division compatibility?
QUESTION: “What is meant by the term division compatibility?”
Why does the relation created as result of a Projection operation on a relation that includes the
QUESTION: Why does the relation create a result of a Projection operation on a relation that includes the primary key not contain fewer tuples than…