The Firebird 5.0 Language Reference | RECREATE SEQUENCE

Example of `RECREATE SEQUENCE`

Recreating sequence EMP_NO_GEN

RECREATE SEQUENCE EMP_NO_GEN
  START WITH 10
  INCREMENT BY 2;

`SET GENERATOR`

Sets the current value of a sequence (generator)

Available in

DSQL, ESQL

Syntax

SET GENERATOR seq_name TO new_val

Table 1. `SET GENERATOR` Statement Parameters
Parameter	Description
seq_name	Generator (sequence) name
new_val	New sequence (generator) value.A 64-bit integer from -2^-63 to 2⁶³-1.

The SET GENERATOR statement sets the current value of a sequence or generator to the specified value.

Note	Although `SET GENERATOR` is considered outdated, it is retained for backward compatibility.Use of the standards-compliant `ALTER SEQUENCE` is recommended.

Who Can Use a `SET GENERATOR`?

The SET GENERATOR statement can be executed by:

Administrators
The owner of the sequence (generator)
Users with the ALTER ANY SEQUENCE (ALTER ANY GENERATOR) privilege

Example of `SET GENERATOR`

Setting the value of the EMP_NO_GEN sequence to 145:

SET GENERATOR EMP_NO_GEN TO 145;

Note

Similar effects can be achieved with [fblangref50-ddl-sequence-alter]:

ALTER SEQUENCE EMP_NO_GEN
  RESTART WITH 145 + increment;

Here, the value of increment is the current increment of the sequence.We need add it as ALTER SEQUENCE calculates the current value to set based on the next value it should produce.

Example Of RECREATE SEQUENCE

Example of `RECREATE SEQUENCE`

`SET GENERATOR`

docnext count = 2

Who Can Use a `SET GENERATOR`?

Example of `SET GENERATOR`

Example Of RECREATE SEQUENCE

Example of RECREATE SEQUENCE

SET GENERATOR

docnext count = 2

Who Can Use a SET GENERATOR?

Example of SET GENERATOR

Example of `RECREATE SEQUENCE`

`SET GENERATOR`

Who Can Use a `SET GENERATOR`?

Example of `SET GENERATOR`