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This tutorial introduces you to the Oracle DATE data type and shows how to handle date and time date effectively.
This tutorial provides you with the most commonly used Oracle date functions that help you handle date and time data easily and more effectively.
5 Answers. Sorted by: 94. Judging from your output it looks like you have defined START_DATE as a timestamp. If it were a regular date Oracle would be able to handle the implicit conversion. But as it isn't you need to explicitly cast those strings to be dates. SQL> alter session set nls_date_format = 'dd-mon-yyyy hh24:mi:ss' 2 / Session altered.
Date functions perform specific operations regarding date information. These functions enter or alter a date in a particular manner. The date functions are summarized in the table below.
This answer applies to dates represented by the Oracle data type DATE. Oracle also has a data type TIMESTAMP, which can also represent a date (with time). If you subtract TIMESTAMP values, you get an INTERVAL; to extract numeric values, use the EXTRACT function.
How can I do this: select * from tableName. where SESSION_START_DATE_TIME > To_Date ('12-Jan-2012 16:00', 'DD-MON-YYYY hh24:mi' ) SESSION_START_DATE_TIME is in the format '12/01/2012 13:16:32.000' I tried where To_Date (SESSION_START_DATE_TIME, 'DD-MON-YYYY hh24:mi') > To_Date ('12-Jan-2012 16:00', 'DD-MON-YYYY hh24:mi' )
Explore date and time functions in Oracle databases. Learn about common functions for date manipulation and formatting. Dive into Oracle's date handling today!
EXTRACT extracts and returns the value of a specified datetime field from a datetime or interval expression. The expr can be any expression that evaluates to a datetime or interval data type compatible with the requested field:
ALTER SESSION SET nls_date_format='DD-MON-YYYY HH24:MI:SS'; Oracle provides several date functions to make date manipulation simpler. The following table lists a selection of them and examples of their usage.
You can use the TRUNC (date) SQL function to ensure that the time fields are set to midnight, or you can make the query a test of greater than or less than (<, <=, >=, or >) instead of equality or inequality (= or !=). Otherwise, Oracle Database may not return the query results you expect.