Introduction to SQL 'AS' clause is used in SQL for Selection operation. Projection operation. Rename operation. Join operation. Selection operation. Projection operation. Rename operation. Join operation. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included. DISTINCT SINGLE ONLY UNIQUE DISTINCT SINGLE ONLY UNIQUE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following SQL query is correct for selecting the name of staffs from 'staffinfo' table where salary is 10,000 or 25,000? SELECT name FROM staffinfo WHERE salary BETWEEN 10000 AND 25000; SELECT name FROM staffinfo WHERE salary IN (10000, 25000); None of these Both A and B SELECT name FROM staffinfo WHERE salary BETWEEN 10000 AND 25000; SELECT name FROM staffinfo WHERE salary IN (10000, 25000); None of these Both A and B ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which command undo all the updates performed by the SQL in the transaction? TRUNCATE COMMIT ROLLBACK DELETE TRUNCATE COMMIT ROLLBACK DELETE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following is valid SQL for an Index? CHANGE INDEX ID; ADD INDEX ID; CREATE INDEX ID; REMOVE INDEX ID; CHANGE INDEX ID; ADD INDEX ID; CREATE INDEX ID; REMOVE INDEX ID; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL COUNT(field_name) tallies only those rows that contain a value; it ignores all null values. False True False True ANSWER DOWNLOAD EXAMIANS APP
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