Openedge Data Management: SQL Reference - Product ...

START WITH
MAXVALUE
ALTER SEQUENCE
Specifies the first sequence number generated. In an ascending sequence, the value must
be greater than or equal to the MINVALUE. In a descending sequence, the value must be
greater than or equal to the MAXVALUE. For ascending sequences, the default value is
MINVALUE. For descending sequences, the default value is MAXVALUE.
Specifies the maximum value for the sequence to generate. For both 32-bit and 64-bit
descending sequences, the default value is -1. For a 32-bit ascending sequence, the default
value is 2,147,483,647. For a 64-bit ascending sequence, the default value is
9223372036854775807.
NOMAXVALUE
Specifies -1 as the MAXVALUE for 32-bit descending sequences and 2,147,483,647 as the
MAXVALUE for 32-bit ascending sequences. Specifies -1 as the MAXVALUE for 64-bit
descending sequences and 9223372036854775807 as the MAXVALUE for 64-bit ascending
sequences.
MINVALUE
Specifies the minimum value the sequence can generate. For an ascending sequence, the
default value is 0. For a descending sequence, the default value is -2,147,483,648 for
32-bit sequences and -9223372036854775808 for 64-bit sequences.
NOMINVALUE
CYCLE
NOCYCLE
CURRVAL
Specifies 0 as the MINVALUE for ascending sequences. The MINVALUE for descending
sequences is -2,147,483,648 for 32-bit sequences and -9223372036854775808 for 64-bit
sequences.
Indicates that the sequence will continue to generate values after reaching the value
assigned to MAXVALUE (if sequence ascends) or MINVALUE (if sequence descends).
Indicates that the sequence cannot generate more values after reaching the value assigned
to MAXVALUE (if sequence ascends) or MINVALUE (if sequence descends). The SQL
sequence generator uses NOCYCLE as the default if CYCLE is not specified.
Returns the current value of the sequence.
Notes • It is possible to set only one attribute of a sequence at a time.
• Attributes START WITH, INCREMENT BY, MAXVALUE, MINVALUE and CURRVAL can take either
an INTEGER or BIGINT argument, depending on whether the sequence is a 32-bit or 64-bit
sequence. The following example modifies a sequence by specifying a maximum value:
ALTER SEQUENCE pub.customer
SET MAXVALUE 9000000000;
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