Introduction to SQL 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes may be created or dropped at any time. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following SQL commands is used to retrieve data? INSERT JOIN SELECT DELETE INSERT JOIN SELECT DELETE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which operator performs pattern matching? LIKE operator None of these EXISTS operator BETWEEN operator LIKE operator None of these EXISTS operator BETWEEN operator ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which SQL keyword is used to retrieve only unique values? DIFFERENT DISTINCT UNIQUE DISTINCTIVE DIFFERENT DISTINCT UNIQUE DISTINCTIVE 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 5 10 9 0 5 10 9 0 ANSWER DOWNLOAD EXAMIANS APP
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