PostgreSQL 9.4.0 Documentation
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# 34.47. `sql_parts`

The table `sql_parts` contains information about which of the several parts of the SQL standard are supported by PostgreSQL.

Table 34-45. `sql_parts` Columns

Name | Data 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

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