Introduction to SQL Indexes may be created or dropped at any time. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column. False True False True 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 10 9 5 0 10 9 5 0 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following is valid SQL for an Index? REMOVE INDEX ID; CHANGE INDEX ID; CREATE INDEX ID; ADD INDEX ID; REMOVE INDEX ID; CHANGE INDEX ID; CREATE INDEX ID; ADD INDEX ID; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL 'AS' clause is used in SQL for Join operation. Rename operation. Projection operation. Selection operation. Join operation. Rename operation. Projection operation. Selection operation. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SELECT DISTINCT is used if a user wishes to see duplicate columns in a query. False True False True ANSWER DOWNLOAD EXAMIANS APP
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