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 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.
The purpose of TO_DATE in Oracle pl/sql is to convert char of CHAR, VARCHAR2, NCHAR, or NVARCHAR2 data type to a value of DATE datatype.Or more generically the Oracle to_date function is used to change a test string (or variable) into an internal date format.
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…) .
Formatting date in SQL (Oracle) -Simple date formatting.Here is few simple SQL date formatting examples that can be useful while displaying dates in different formats.There are a number of formatting techniques available for dates and timestamps.
Datatypes Every constant and variable has a data type ,which specifies the storage format. It also specifies the constraints ad valid range of values.We can generalize the different types as… Read more »