https://github.com/friendica/friendica/issues/2786 Only tested on Ubuntu 16.10 with MySQL 5.7.17. https://dev.mysql.com/doc/refman/8.0/en/timestamp-initialization.html https://dev.mysql.com/doc/refman/8.0/en/sql-mode.html#sqlmode_no_zero_date As of MySQL 5.7.4, NO_ZERO_DATE is deprecated. Patch based on the following search & replace (and then reverting some changes in libraries): ```sh grep -l '= "0000-00-00"' -r . | xargs sed -i -e "s/= \"0000-00-00\"/= '0000-00-00'/g" grep -l "0000-00-00" -r . | xargs sed -i -e "s/0000-00-00/0001-01-01/g" grep -l "!= '0001-01-01'" -r . | xargs sed -i -e "s/!= '0001-01-01'/> '0001-01-01'/g" grep -l " === '0001-01-01'" -r . | xargs sed -i -e "s/ === '0001-01-01'/ <= '0001-01-01'/g" grep -l " == '0001-01-01'" -r . | xargs sed -i -e "s/ == '0001-01-01'/ <= '0001-01-01'/g" grep -l "strpos(\$dob, '0000-') === 0" -r . | xargs sed -i -e "s/strpos(\$dob, '0000-') === 0/strpos(\$dob, '0000-') === 0 || strpos(\$dob, '0001-') === 0/g" grep -l 'array("", "0001-01-01")' -r . | xargs sed -i -e 's/array("", "0001-01-01")/array("", "0000-00-00", "0001-01-01")/g' grep -l "\$dob = '0000-'" -r . | xargs sed -i -e "s/\$dob = '0000-'/\$dob = '0001-'/g" ```
		
			
				
	
	
		
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| Table item
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| ==========
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| 
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| | Field         | Description                                                                                                                                                | Type                | Null | Key | Default             | Extra          |
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| |---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------|------|-----|---------------------|----------------|
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| | id            | sequential ID                                                                                                                                              | int(10) unsigned    | NO   | PRI | NULL                | auto_increment |
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| | guid          | A unique identifier for this item                                                                                                                          | varchar(255)        | NO   | MUL |                     |                |
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| | uri           |                                                                                                                                                            | varchar(255)        | NO   | MUL |                     |                |
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| | uid           | user.id which owns this copy of the item                                                                                                                   | int(10) unsigned    | NO   | MUL | 0                   |                |
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| | contact-id    | contact.id                                                                                                                                                 | int(11)             | NO   | MUL | 0                   |                |
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| | gcontact-id   | ID of the global contact                                                                                                                                   | int(11)             | NO   | MUL | 0                   |                |
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| | type          |                                                                                                                                                            | varchar(255)        | NO   |     |                     |                |
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| | wall          | This item was posted to the wall of uid                                                                                                                    | tinyint(1)          | NO   | MUL | 0                   |                |
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| | gravity       |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| | parent        | item.id of the parent to this item if it is a reply of some form; otherwise this must be set to the id of this item                                        | int(10) unsigned    | NO   | MUL | 0                   |                |
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| | parent-uri    | uri of the parent to this item                                                                                                                             | varchar(255)        | NO   | MUL |                     |                |
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| | extid         |                                                                                                                                                            | varchar(255         | NO   | MUL |                     |                |
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| | thr-parent    | If the parent of this item is not the top-level item in the conversation, the uri of the immediate parent; otherwise set to parent-uri                     | varchar(255)        | NO   |     |                     |                |
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| | created       | Creation timestamp.                                                                                                                                        | datetime            | NO   |     | 0001-01-01 00:00:00 |                |
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| | edited        | Date of  last edit (default is created)                                                                                                                    | datetime            | NO   |     | 0001-01-01 00:00:00 |                |
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| | commented     | Date of last comment/reply to this item                                                                                                                    | datetime            | NO   |     | 0001-01-01 00:00:00 |                |
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| | received      | datetime                                                                                                                                                   | datetime            | NO   |     | 0001-01-01 00:00:00 |                |
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| | changed       | Date that something in the conversation changed, indicating clients should fetch the conversation again                                                    | datetime            | NO   |     | 0001-01-01 00:00:00 |                |
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| | owner-name    | Name of the owner of this item                                                                                                                             | varchar(255)        | NO   |     |                     |                |
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| | owner-link    | Link to the profile page of the owner of this item                                                                                                         | varchar(255)        | NO   |     |                     |                |
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| | owner-avatar  | Link to the avatar picture of the owner of this item                                                                                                       | varchar(255)        | NO   |     |                     |                |
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| | owner-id      | Link to the contact table with uid=0 of the owner of this item                                                                                             | int(11)             | NO   | MUL | 0                   |                |
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| | author-name   | Name of the author of this item                                                                                                                            | varchar(255)        | NO   |     |                     |                |
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| | author-link   | Link to the profile page of the author of this item                                                                                                        | varchar(255)        | NO   |     |                     |                |
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| | author-avatar | Link to the avatar picture of the author of this item                                                                                                      | varchar(255)        | NO   |     |                     |                |
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| | author-id     | Link to the contact table with uid=0 of the author of this item                                                                                            | int(11)             | NO   | MUL | 0                   |                |
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| | title         | item title                                                                                                                                                 | varchar(255)        | NO   |     |                     |                |
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| | body          | item body content                                                                                                                                          | mediumtext          | NO   |     | NULL                |                |
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| | app           | application which generated this item                                                                                                                      | varchar(255)        | NO   |     |                     |                |
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| | verb          | ActivityStreams verb                                                                                                                                       | varchar(255)        | NO   |     |                     |                |
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| | object-type   | ActivityStreams object type                                                                                                                                | varchar(255)        | NO   |     |                     |                |
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| | object        | JSON encoded object structure unless it is an implied object (normal post)                                                                                 | text                | NO   |     | NULL                |                |
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| | target-type   | ActivityStreams target type if applicable (URI)                                                                                                            | varchar(255)        | NO   |     |                     |                |
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| | target        | JSON encoded target structure if used                                                                                                                      | text                | NO   |     | NULL                |                |
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| | postopts      | External post connectors add their network name to this comma-separated string to identify that they should be delivered to these networks during delivery | text                | NO   |     | NULL                |                |
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| | plink         | permalink or URL toa displayable copy  of the message at its source                                                                                        | varchar(255)        | NO   |     |                     |                |
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| | resource-id   | Used to link other tables to items, it identifies the linked resource (e.g. photo) and if set must also set resource_type                                  | varchar(255)        | NO   | MUL |                     |                |
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| | event-id      | Used to link to the event.id                                                                                                                               | int(11)             | NO   |     | 0                   |                |
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| | tag           |                                                                                                                                                            | mediumtext          | NO   |     | NULL                |                |
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| | attach        | JSON structure representing attachments to this item                                                                                                       | mediumtext          | NO   |     | NULL                |                |
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| | inform        |                                                                                                                                                            | mediumtext          | NO   |     | NULL                |                |
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| | file          |                                                                                                                                                            | mediumtext          | NO   |     | NULL                |                |
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| | location      | text location where this item originated                                                                                                                   | varchar(255)        | NO   |     |                     |                |
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| | coord         | longitude/latitude pair representing location where this item originated                                                                                   | varchar(255)        | NO   |     |                     |                |
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| | allow_cid     | Access Control - list of allowed contact.id '<19><78>'                                                                                                     | mediumtext          | NO   |     | NULL                |                |
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| | allow_gid     | Access Control - list of allowed groups                                                                                                                    | mediumtext          | NO   |     | NULL                |                |
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| | deny_cid      | Access Control - list of denied contact.id                                                                                                                 | mediumtext          | NO   |     | NULL                |                |
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| | deny_gid      | Access Control - list of denied groups                                                                                                                     | mediumtext          | NO   |     | NULL                |                |
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| | private       | distribution is restricted                                                                                                                                 | tinyint(1)          | NO   |     | 0                   |                |
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| | pubmail       |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| | moderated     |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| | visible       |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| | spam          |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| | starred       | item has been favourited                                                                                                                                   | tinyint(1)          | NO   |     | 0                   |                |
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| | bookmark      | item has been bookmarked                                                                                                                                   | tinyint(1)          | NO   |     | 0                   |                |
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| | unseen        | item has not been seen                                                                                                                                     | tinyint(1)          | NO   |     | 1                   |                |
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| | deleted       | item has been deleted                                                                                                                                      | tinyint(1)          | NO   | MUL | 0                   |                |
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| | origin        | item originated at this site                                                                                                                               | tinyint(1)          | NO   |     | 0                   |                |
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| | forum_mode    |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| | last-child    |                                                                                                                                                            | tinyint(1) unsigned | NO   |     | 1                   |                |
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| | mention       | The owner of this item was mentioned in it                                                                                                                 | tinyint(1)          | NO   |     | 0                   |                |
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| | network       | Network from where the item comes from                                                                                                                     | varchar(32)         | NO   |     |                     |                |
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| | rendered-hash |                                                                                                                                                            | varchar(32)         | NO   |     |                     |                |
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| | rendered-html | item.body converted to html                                                                                                                                | mediumtext          | NO   |     | NULL                |                |
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| | global        |                                                                                                                                                            | tinyint(1)          | NO   |     | 0                   |                |
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| 
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| Return to [database documentation](help/database)
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