The table sql_sizing contains information about
   various size limits and maximum values in
   PostgreSQL.  This information is
   primarily intended for use in the context of the ODBC interface;
   users of other interfaces will probably find this information to be
   of little use.  For this reason, the individual sizing items are
   not described here; you will find them in the description of the
   ODBC interface.
  
Table 32-35. sql_sizing Columns
| Name | Data Type | Description | 
|---|
| sizing_id | cardinal_number | Identifier of the sizing item | 
| sizing_name | character_data | Descriptive name of the sizing item | 
| supported_value | cardinal_number | Value of the sizing item, or 0 if the size is unlimited or
       cannot be determined, or null if the features for which the
       sizing item is applicable are not supported | 
| comments | character_data | Possibly a comment pertaining to the sizing item |