TIMESTAMP WITH TIME ZONE contains all of the values of TIMESTAMP as well as time zone displacement value.
Data is normalized to the database time zone when it is stored in the database.
When the data is retrieved, users see the data in the time zone applicable to their session.
This is Oracle 12c feature. Prior to 12c, the DEFAULT for a column would not be applied if you explicitly (or implicitly) inserted a […]
you can’t specify NULL for exp1 in NULLIF function select NULLIF(NULL, NULL) from dual; It will produce an error. (see below) But […]
The sequence keywords CURVAL and NEXTVAL can’t be used in: the condition of a CHECK constraint the DEFAULT value of a table column […]
It is a new feature in 12c – now you can use sequence while creating a column. In the example below, the sequence […]
