Introduction to SQL SELECT DISTINCT is used if a user wishes to see duplicate columns in a query. 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 Count function in SQL returns the number of values. distinct values. columns. groups. values. distinct values. columns. groups. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which command undo all the updates performed by the SQL in the transaction? ROLLBACK COMMIT TRUNCATE DELETE ROLLBACK COMMIT TRUNCATE DELETE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL To sort the results of a query use: SORT BY. ORDER BY. None of these GROUP BY. SORT BY. ORDER BY. None of these GROUP BY. ANSWER DOWNLOAD EXAMIANS APP
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