lukejee：
use SERIAL rather than OIDs because SERIAL sequences are unique only within a single table
[阅读: 1049] 2005-10-09 02:48:58
To uniquely number columns in user tables, it is best to use SERIAL rather than OIDs because SERIAL sequences are unique only within a single table. and are therefore less likely to overflow. SERIAL8 is available for storing eight-byte sequence values.
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