Contains information about the primary key columns of all the streams. If a stream has a primary key, the columns that make up the key are listed in this stream.
| Column | Type | Description |
|---|---|---|
| table | string | The name of the stream owning the column described by this row. |
| field | string | The name of the column described by this row. |
| type | integer | The internal PostgreSQL value representing the type of this column. The possible values are:
|