The table sql_parts contains information about which of the several parts of the SQL standard are supported by PostgreSQL.
Table 37.48. sql_parts Columns
Column Type
Description
feature_id character_data
An identifier string containing the number of the part
feature_name character_data
Descriptive name of the part
is_supported yes_or_no
YES if the part is fully supported by the current version of PostgreSQL, NO if not
is_verified_by character_data
Always null, since the PostgreSQL development group does not perform formal testing of feature conformance
comments character_data
Possibly a comment about the supported status of the part