Introduction to SQL COUNT(field_name) tallies only those rows that contain a value; it ignores all null values. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes can usually be created for both primary and secondary keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL There is an equivalent join expression that can be substituted for all subquery expressions. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following must be enclosed in double quotes? Column Alias Strings All of these Dates Column Alias Strings All of these Dates ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The keyword LIKE can be used in a WHERE clause to refer to a range of values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters." True False True False ANSWER DOWNLOAD EXAMIANS APP
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