this_quarter() function
The this_quarter() function determines the first day of the quarter of a specified date.
Syntax
The this_quarter() function has the following
syntax:
date = this_quarter(date input);
The input value
specifies a date.
Returns
The function returns a date value that represents the first day of the quarter of the specified input.
Example
select this_quarter('1996-2-29');
THIS_QUARTER
--------------
1996-01-01
(1 row)