1. Query Functions

2. Date() - Returns the current system date Month() – Returns the numeric month based on the given date. Day() - Returns the numeric day based on the given date. Year() - Returns the year based on the given date.

3. Avg() – Gets the average of the values in numeric expression
Avg() – Gets the average of the values in numeric expression. Count() – Get the number of the specified records. Max() – Get the maximum value of the expression. Min() - Get the minimum value of the expression. Sum() - Get the total values of the expression.

4. Inner – Joins the two tables except those records that do not match
Inner – Joins the two tables except those records that do not match. Left - Joins the two tables and include those records in the first table. Right - Joins the two tables and include those records in the second table.

5. And – Both of the given conditions must be satisfied
And – Both of the given conditions must be satisfied. Or – any of the given conditions must be satisfied. Not – Opposite of the given conditions must be performed.