pg_attrdef #
The catalog pg_attrdef stores column default
expressions and generation expressions. The main information about columns
is stored in pg_attribute.
Only columns for which a default expression or generation expression has
been explicitly set will have an entry here.
Table 52.6. pg_attrdef Columns
Column Type Description |
|---|
Row identifier |
The table this column belongs to |
The number of the column |
The column default or generation expression, in |