SQL Functions

SQL Scalar functions

It returns a single value, based on the input value.

• UCASE() - Converts a field to upper case
• LEN() - Returns the length of a text field
• FORMAT() - Formats how a field is to be displayed
• ROUND() - Rounds a numeric field to the number of decimals specified
• NOW() - Returns the current system date and time
• LCASE() - Converts a field to lower case
• MID() - Extract characters from a text field

SQL Aggregate Functions

It  return a single value calculated from values in column.

• AVG() - Returns the average value
• LAST() - Returns the last value
• MAX() - Returns the largest value
• COUNT() - Returns the number of rows
• MIN() - Returns the smallest value
• SUM() - Returns the sum
• FIRST() - Returns the first value