Openedge Data Management: SQL Reference - Product ...

ALTER DATABASE SET PRO_ENABLE_64BIT_SEQUENCES 'Y'
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• If large keys are already enabled, an error message indicating such will be returned when
you use the statement.
ALTER DATABASE SET PRO_ENABLE_64BIT_SEQUENCES 'Y'
Syntax
This statement is used to enable large index keys in a database.
Notes • You must have SQL DBA privileges to enable 64-bit sequences.
ALTER SEQUENCE
Syntax
ALTER DATABASE SET PRO_ENABLE_64BIT_SEQUENCES 'Y'
• As of OpenEdge Release 10.1B, OpenEdge databases support sequences with 64-bit
maximums for positive and negative numbers.
• In releases 10.1B and later, this feature is enabled by default. However, in Releases 10.1A
and earlier, this specific ALTER DATABASE statement must be used to enable 64-bit
sequences.
• If 64-bit sequences are already enabled, an error message indicating such will be returned
when you use the statement.
The ALTER SEQUENCE statement can be used to change the current value of an existing sequence.
The sequence can be in the current schema or a schema can be specified.
ALTER SEQUENCE [schema_name.]sequence_name SET
{ START WITH value | INCREMENT BY value |MAXVALUE value | NOMAXVALUE |
MINVALUE value |NOMINVALUE | CYCLE | NOCYCLE | CURRVAL value };
schema_name
Specifies the schema name that contains the sequence. If this is not specified, OpenEdge
SQL drops the sequence, if present, from the current schema.
sequence_name
Specifies the sequence to be dropped.
INCREMENT BY
Specifies the interval between sequence numbers. The value can be a positive or negative
integer (INTEGER data type for 32-bit sequences, BIGINT datatype for 64-bit sequences),
but cannot be 0. The value range for a 32-bit sequence is from -2,147,483,648 to
2,147,483,647. The value range for a 64-bit sequence is from -9223372036854775808 to
9223372036854775807. If value is positive, the sequence ascends. If it is negative, the
sequence descends. The default value is 1.