oraclecertificationprep.com (Flash Cards) CURVAL and NEXTVAL by admin|Published January 24, 2018 The sequence keywords CURVAL and NEXTVAL can’t be used in: the condition of a CHECK constraint the DEFAULT value of a table column the WHERE clause of a SELECT statement
Published September 25, 2017 LOB data types do not require length specification What is wrong with the above statement? The Answer: It is not legitimate to specify a length for LOB data types ( […]
Published September 29, 2017 TIMESTAMP WITH TIME ZONE data type TIMESTAMP WITH TIME ZONE contains all of the values of TIMESTAMP as well as time zone displacement value. Data is normalized to […]
Published January 22, 2018 TO_CHAR to CHAR, TO_DATE to DATE, TO_NUMBER to NUMBER 1 comment You can’t apply a TO_CHAR() function to an argument with CHAR data type because 10-JAN-16 is already a CHAR literal. It will generate an […]
Published January 19, 2018 DEFAULT ON NULL This is Oracle 12c feature. Prior to 12c, the DEFAULT for a column would not be applied if you explicitly (or implicitly) inserted a […]