QGIS POSTGIS Delete error


### db 자체로 수정하려면 primary는 geom이어야
```typeALTER TABLE temp.mission ADD PRIMARY KEY (geom);```

### Cannot Delete Error
> [Data provider does not support deleting features for PostGIS tables?](https://gis.stackexchange.com/questions/286103/data-provider-does-not-support-deleting-features-for-postgis-tables)

> [PostgreSQL Primary Key](https://www.postgresqltutorial.com/postgresql-primary-key/)



### Remove Data - duplicated
> [Postgres could not create unique index, key is duplicated](https://stackoverflow.com/questions/45315510/postgres-could-not-create-unique-index-key-is-duplicated)






