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Introduction to SQL
COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.
True
Correct Answer:
True
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Introduction to SQL
SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.
The keyword LIKE can be used in a WHERE clause to refer to a range of values.
A dynamic view is one whose contents materialize when referenced.
The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.
A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.
Indexes may be created or dropped at any time.
SQL is a programming language.
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.
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