Oracle provide a lot of mechanisms to handle the time and date types.Formatting the date and time objects can be done in different ways.Please read the following articles to know more about timestamp in milliseconds and Date format.
To_timestamp method in oracle is used with string (varchar2 or similar) or character sequences to convert it into timestamp type.The function requires the input string of timestamp and the format string as parameters.
DATE datatype.DATE datatype has the ability to store the month, day, year, century, hours, minutes, and seconds.But TIMESTAMP datatype which stores all the information that the DATE datatype stores,and also includes fractional seconds.
A to_char function is useful while displaying oracle date value to a required string format.This is particularly useful for displaying the dates in the most suitable format required.Few examples of using this method with different formats given below.
A date format can be used with to_date and to_char functions.There are number of different formats that can be used to convert dates in different ways.
How to compare dates in oracle?There are a number of ways you can compare two dates in oracle to check which is greater or which is small.This is particularly useful when we do operations based on certain date conditions.This is used along with to_date and other date functions.
The EXTRACT function extracts and returns the value of a specified datetime field from a datetime.It can also be used for extracting specified value from an interval value expression.
The DATE type is stored in a special internal format that includes not just the month, day, and year, but also the hour, minute, and second.There are a number of key words and functions provided by oracle to use the date and timestamp data types in much flexible ways.
Oracle maintains the SYSDATE pseudo-column to show the current system date and time.
How to find the difference between two dates in Oracle? The following examples gives different useful methods to do this.
In Oracle Date data is stored in fixed-length fields of seven bytes each, corresponding to century, year, month, day, hour, minute, and second. (Also Read Formatting date in SQL (Oracle) -Simple date forma…) .