sequences.hlp
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上传日期:2007-01-07
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- .pgaw:Help.f.t insert end " The " {} "Sequences" {bold} " tab is used to
- define new sequence number generators or to inspect them.
- Sequences are used sometimes for assigning default values to some unique
- fields in order to obtain a unique id. Sequences are returning an int4
- value. For example, a new sequence will be automatically defined if you
- are adding a 'serial' field type into a table.
- In order to define a new sequence you should supply at least the sequence
- name. The default increment is 1, the default start value and minvalue is 1.
- Inspecting a sequence will show you the last number generated.
-
- For more information see also " {} "CREATE SEQUENCE" {link create_sequence}
- " SQL command." {}