Statement 22 The GROUP BY clause in the SQL statement allows aggregate functions of non grouped columns. The join is an inner join thus departments with no employees are not displayed. select dname, ...

NOTE: When executing the Oracle SQL version of this query, no indexes or constraints will be selected. Integrity constraints are defined on several columns of the table. The STORAGE clause specifies ...

Insert all statement:with the help of insert all statement we can add multiple rows with a single insert statement. we can use this statement to insert multiple rows in one or more than one tables. it ...