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documentation for new migration command

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Sarah Hoffmann
2021-03-06 16:38:37 +01:00
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docs/admin/Migration.md
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# Database Migrations # Database Migrations
This page describes database migrations necessary to update existing databases Since version 3.7.0 Nominatim offers automatic migrations. Please follow
to newer versions of Nominatim. the following steps:
SQL statements should be executed from the PostgreSQL commandline. Execute * stop any updates that are potentially running
`psql nominatim` to enter command line mode. * update Nominatim to the nwer version
* goto your project directory and run `nominatim admin --migrate`
* (optionally) restart updates
Below you find additional migrations and hints about other structural and
breaking changes.
!!! note
If you are migrating from a version <3.6, then you still have to follow
the manual migration steps up to 3.6.
## 3.6.0 -> master ## 3.6.0 -> master
### Status table contains now time zone information
The `import_status` table has been changed to include timezone information
with the time stamp. You need to alter an existing table before running
any replication functions with:
```sql
ALTER TABLE import_status ALTER COLUMN lastimportdate TYPE timestamp with time zone;
```
### New location for data files ### New location for data files
External data files for Wikipedia importance, postcodes etc. are no longer External data files for Wikipedia importance, postcodes etc. are no longer