Database Developer Interview Question:

Tell me what are aggregate functions in SQL?

Submitted by: Muhammad

SQL aggregate functions return a single value, calculated from values in a column. Some of the aggregate functions in SQL are as follows

☛ AVG() – This function returns the average value
☛ COUNT() – This function returns the number of rows
☛ MAX() – This function returns the largest value
☛ MIN() – This function returns the smallest value
☛ ROUND() – This function rounds a numeric field to the number of decimals specified
☛ SUM() – This function returns the sum
Submitted by: Muhammad