HOW TO USE COUNT() AVG() SUM() FUNTIONS IN SQL?

HOW TO USE MIN() AND MAX() FUNTION IN SQL?

HOW TO USE SELECT TOP CLAUSE IN SQL?

WHAT IS A NULL VALUE IN SQL?

HOW TO USE SQL ORDER BY CLAUSE?

HOW TO USE SQL AND, OR, NOT OPERATORS?

HOW TO USE WHERE CLAUSE IN SQL?

HOW TO SELECT DISTINCT VALUES IN SQL?

HOW TO USE SELECT IN SQL?

HOW TO UPDATE EXISTING RECORDS IN TABLE IN SQL?

HOW TO DATA INSERT INTO TABLE IN SQL?

HOW TO ALTER TABLE IN SQL?