SYSSEQUENCES system table

The SYSSEQUENCES table describes the sequence generators in the database.

Note: Users should not directly query the SYSSEQUENCES table, because that will slow down the performance of sequence generators. Instead, users should call the SYSCS_UTIL.SYSCS_PEEK_AT_SEQUENCE system function.

The following table shows the contents of the SYSSEQUENCES system table.

Table 1. SYSSEQUENCES system table
Column Name	Type	Length	Nullable	Contents
SEQUENCEID	CHAR	36	false	The ID of the sequence generator. This is the primary key.
SEQUENCENAME	VARCHAR	128	false	The name of the sequence generator. There is a unique index on (SCHEMAID, SEQUENCENAME).
SCHEMAID	CHAR	36	false	The ID of the schema that holds the sequence generator. There is a foreign key linking this column to SYSSCHEMAS.SCHEMAID.
SEQUENCEDATATYPE	org.apache.derby. catalog. TypeDescriptor This class is not part of the public API.	2,147,483,647	false	System type that describes the precision, length, scale, nullability, type name, and storage type of the data
CURRENTVALUE	BIGINT	20	true	The current value of the sequence generator. This is not the actual next value for the sequence generator. That value can be obtained by calling the system function SYSCS_UTIL.SYSCS_PEEK_AT_SEQUENCE. SYSSEQUENCES.CURRENTVALUE holds the end of the range of values which have been preallocated in order to boost concurrency. The initial value of this column is STARTVALUE. This column is NULL only if the sequence generator is exhausted and cannot issue any more numbers.
STARTVALUE	BIGINT	20	false	The initial value of the sequence generator
MINIMUMVALUE	BIGINT	20	false	The minimum value of the sequence generator
MAXIMUMVALUE	BIGINT	20	false	The maximum value of the sequence generator
INCREMENT	BIGINT	20	false	The step size of the sequence generator
CYCLEOPTION	CHAR	1	false	If the sequence generator cycles, this value is 'Y'. If the sequence generator does not cycle, this value is 'N'.