Table post-user
===========

User specific post data

Fields
------

| Field             | Description                                                                       | Type               | Null | Key | Default             | Extra          |
| ----------------- | --------------------------------------------------------------------------------- | ------------------ | ---- | --- | ------------------- | -------------- |
| id                |                                                                                   | int unsigned       | NO   | PRI | NULL                | auto_increment |
| uri-id            | Id of the item-uri table entry that contains the item uri                         | int unsigned       | NO   |     | NULL                |                |
| parent-uri-id     | Id of the item-uri table that contains the parent uri                             | int unsigned       | YES  |     | NULL                |                |
| thr-parent-id     | Id of the item-uri table that contains the thread parent uri                      | int unsigned       | YES  |     | NULL                |                |
| external-id       | Id of the item-uri table entry that contains the external uri                     | int unsigned       | YES  |     | NULL                |                |
| created           | Creation timestamp.                                                               | datetime           | NO   |     | 0001-01-01 00:00:00 |                |
| edited            | Date of last edit (default is created)                                            | datetime           | NO   |     | 0001-01-01 00:00:00 |                |
| received          | datetime                                                                          | datetime           | NO   |     | 0001-01-01 00:00:00 |                |
| gravity           |                                                                                   | tinyint unsigned   | NO   |     | 0                   |                |
| network           | Network from where the item comes from                                            | char(4)            | NO   |     |                     |                |
| owner-id          | Link to the contact table with uid=0 of the owner of this item                    | int unsigned       | NO   |     | 0                   |                |
| author-id         | Link to the contact table with uid=0 of the author of this item                   | int unsigned       | NO   |     | 0                   |                |
| causer-id         | Link to the contact table with uid=0 of the contact that caused the item creation | int unsigned       | YES  |     | NULL                |                |
| post-type         | Post type (personal note, image, article, ...)                                    | tinyint unsigned   | NO   |     | 0                   |                |
| post-reason       | Reason why the post arrived at the user                                           | tinyint unsigned   | NO   |     | 0                   |                |
| vid               | Id of the verb table entry that contains the activity verbs                       | smallint unsigned  | YES  |     | NULL                |                |
| private           | 0=public, 1=private, 2=unlisted                                                   | tinyint unsigned   | NO   |     | 0                   |                |
| global            |                                                                                   | boolean            | NO   |     | 0                   |                |
| visible           |                                                                                   | boolean            | NO   |     | 0                   |                |
| deleted           | item has been marked for deletion                                                 | boolean            | NO   |     | 0                   |                |
| uid               | Owner id which owns this copy of the item                                         | mediumint unsigned | NO   |     | NULL                |                |
| protocol          | Protocol used to deliver the item for this user                                   | tinyint unsigned   | YES  |     | NULL                |                |
| contact-id        | contact.id                                                                        | int unsigned       | NO   |     | 0                   |                |
| event-id          | Used to link to the event.id                                                      | int unsigned       | YES  |     | NULL                |                |
| unseen            | post has not been seen                                                            | boolean            | NO   |     | 1                   |                |
| hidden            | Marker to hide the post from the user                                             | boolean            | NO   |     | 0                   |                |
| notification-type |                                                                                   | tinyint unsigned   | NO   |     | 0                   |                |
| wall              | This item was posted to the wall of uid                                           | boolean            | NO   |     | 0                   |                |
| origin            | item originated at this site                                                      | boolean            | NO   |     | 0                   |                |
| psid              | ID of the permission set of this post                                             | int unsigned       | YES  |     | NULL                |                |

Indexes
------------

| Name                 | Fields                  |
| -------------------- | ----------------------- |
| PRIMARY              | id                      |
| uid_uri-id           | UNIQUE, uid, uri-id     |
| uri-id               | uri-id                  |
| parent-uri-id        | parent-uri-id           |
| thr-parent-id        | thr-parent-id           |
| external-id          | external-id             |
| owner-id             | owner-id                |
| author-id            | author-id               |
| causer-id            | causer-id               |
| vid                  | vid                     |
| contact-id           | contact-id              |
| event-id             | event-id                |
| psid                 | psid                    |
| author-id_uid        | author-id, uid          |
| author-id_received   | author-id, received     |
| parent-uri-id_uid    | parent-uri-id, uid      |
| uid_contactid        | uid, contact-id         |
| uid_unseen_contactid | uid, unseen, contact-id |
| uid_unseen           | uid, unseen             |
| uid_hidden_uri-id    | uid, hidden, uri-id     |

Foreign Keys
------------

| Field | Target Table | Target Field |
|-------|--------------|--------------|
| uri-id | [item-uri](help/database/db_item-uri) | id |
| parent-uri-id | [item-uri](help/database/db_item-uri) | id |
| thr-parent-id | [item-uri](help/database/db_item-uri) | id |
| external-id | [item-uri](help/database/db_item-uri) | id |
| owner-id | [contact](help/database/db_contact) | id |
| author-id | [contact](help/database/db_contact) | id |
| causer-id | [contact](help/database/db_contact) | id |
| vid | [verb](help/database/db_verb) | id |
| uid | [user](help/database/db_user) | uid |
| contact-id | [contact](help/database/db_contact) | id |
| event-id | [event](help/database/db_event) | id |
| psid | [permissionset](help/database/db_permissionset) | id |

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