McAfee Data Analyst Interview Questions and Answers

Yes, aggregate functions can be used with HAVING and WHERE clauses. WHERE filters rows before grouping, HAVING filters groups after grouping.

• Aggregate functions can be used with HAVING clause to filter groups based on the result of the aggregate function.

• Aggregate functions can also be used with WHERE clause to filter rows before grouping.

• WHERE clause filters rows before grouping, while HAVING clause filters groups aft...read more

The order of execution of a SQL query is: FROM, WHERE, GROUP BY, HAVING, SELECT, ORDER BY.

• FROM: Specifies the tables involved in the query

• WHERE: Filters the rows based on specified conditions

• GROUP BY: Groups the rows that have the same values into summary rows

• HAVING: Filters the groups based on specified conditions

• SELECT: Selects the columns to be displayed in the result set

• ORDER BY: Sorts the result set based on speci

User Defined Functions, Stored Procedures, and Triggers are database objects used to perform specific tasks in database management systems.

• User Defined Functions are custom functions created by users to perform specific calculations or operations in a database.

• Stored Procedures are precompiled SQL statements that can be executed by calling the procedure name.

• Triggers are special types of stored procedures that are auto...read more