Introduction to SQL What operator tests column for the absence of data? EXISTS operator None of these NOT operator IS NULL operator EXISTS operator None of these NOT operator IS NULL operator ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Table employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.The SQL statementSELECT COUNT(*) FROM employee WHERE SALARY > ALL (SELECT SALARY FROM EMPLOYEE);prints 0 5 10 9 0 5 10 9 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The result of a SQL SELECT statement is a ________ . report file table form report file table form ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In SQL, which command is used to change a table's storage characteristics? MODIFY TABLE ALTER TABLE CHANGE TABLE None of these MODIFY TABLE ALTER TABLE CHANGE TABLE None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The command to remove rows from a table 'CUSTOMER' is: DROP FROM CUSTOMER ... UPDATE FROM CUSTOMER ... REMOVE FROM CUSTOMER ... DELETE FROM CUSTOMER WHERE ... DROP FROM CUSTOMER ... UPDATE FROM CUSTOMER ... REMOVE FROM CUSTOMER ... DELETE FROM CUSTOMER WHERE ... ANSWER DOWNLOAD EXAMIANS APP
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