
This section describes the functions that can be used to manipulate temporal values. Date and Time Types”, for a description of the range of values each date and time type has and the valid formats in which values may be specified. This function only calculates the date portion from each expression.
I will show you in the example below. TIMESTAMPDIFF() function. It is not necessary that both the expression are of the same type.
Hey, in my database there is the birthday stored separated in year (column birth_y), month (column birth_m) and day (column birth_d). It works if my beginning date is the first of january and the end date the 31st of December, but does not if it stars somewhere else during the year. Only the date parts of the values are used in the calculation. For example, If you want to extract year, month or quarter from the existing Date, you can use this SQL Datediff function. Date difference is very important function of MySql.
These dates can be a column from a table, a string literal, or the current date. Most web applications today use boring methods to present data to their viewers using grids or simple HTML tables. The trunc () function can be. However, I try to make it so that the existing SQL can run on both databases without changes. DATEDIFF (exprexpr2) DATEDIFF () returns expr1.


