Setting the Default Date Format : Date « SQL Data Types « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » SQL Data Types » Date

10. 6. 4. Setting the Default Date Format

The default date format is specified in the NLS_DATE_FORMAT database parameter.

You can change the setting by setting this parameter's value init.ora or spfile.ora file.

init.ora or spfile.ora file is read when the database is started.

You can set NLS_DATE_FORMAT using an ALTER SYSTEM command.

You can set the NLS_DATE_FORMAT parameter for your own session using SQL*Plus using ALTER SESSION.

A session is started when you connect to a database and is ended when you disconnect.

The following ALTER SESSION statement sets NLS_DATE_FORMAT to MONTH-DD-YYYY.


ALTER SESSION SET NLS_DATE_FORMAT = 'MONTH-DD-YYYY';

10. 6. Date
	10. 6. 1.	Process and store a specific date and time.
	10. 6. 2.	Use the DATE keyword to supply a date literal to the database.
	10. 6. 3.	Cast string to date in where clause
	10. 6. 4.	Setting the Default Date Format
	10. 6. 5.	Storing and Retrieving Dates
	10. 6. 6.	Default time field
	10. 6. 7.	Combining TO_CHAR() and TO_DATE() Calls
	10. 6. 8.	Converting a DATE to Another Language
	10. 6. 9.	Compare date type value in where clause
	10. 6. 10.	Query for NULL Date type data
	10. 6. 11.	TRUNC(Start_date)
	10. 6. 12.	TO_CHAR(start_date, 'MM-DD-YYYY HH24:MI')
	10. 6. 13.	Call SYSDATE in insert statement
	10. 6. 14.	Check Date format before inserting
	10. 6. 15.	Add condition constraint to date type column
	10. 6. 16.	Greater than a date
	10. 6. 17.	BETWEEN for date type value
	10. 6. 18.	Date calculation

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