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NOW
Syntax
110
schema
sequence
Specifies the schema that contains the sequence. To refer to the next value of a sequence
in the schema of another user, you must have SELECT object privilege on the sequence.
Specifies the name of the sequence whose next value you want.A statement referencing
NEXTVAL for a noncycling sequence returns an error after reaching the maximum value.
Use NEXTVAL in the:
• SELECT list of a SELECT statement not contained in a subquery or view
• SELECT list of a subquery in an INSERT statement
• VALUES clause of an INSERT statement
• SET clause of an UPDATE statement
NEXTVAL cannot be used in:
• A query of a view
• A SELECT statement with a GROUP BY clause that references a sequence
• A SELECT statement with an ORDER BY clause that references a sequence
• A SELECT statement that is combined with another SELECT statement with the UNION,
INTERSECT, or MINUS set operator
• The WHERE clause of a SELECT or UPDATE statement
• The DEFAULT value of a column in a CREATE TABLE or ALTER TABLE statement
• The condition of a CHECK constraint
Example In the following example, the sequence generator increments the customer sequence and uses
its value for a new customer inserted into the table pub.customer:
NOW
Syntax
schema.sequence.NEXTVAL
INSERT INTO pub.customer VALUES
(customer_sequence.NEXTVAL,’USA’,’BackCountry Equipment’,’Sugar Hill
Road’,’12A’,’Franconia’,’NH’,’03242’,’Dan Egan’,’603-762-2121’,’Kirsten
Ulmner’, 10000.00, 500.00,’net 10’, 0,’contact monthly’);
Returns the current date and time as a TIMESTAMP value. This function takes no arguments.
NOW ( )