# Restaurando backup do Discourse 1.9 para v2.3.0.beta9 +184

**URL:** <https://meta.discourse.org/t/restoring-discourse-1-9-backup-onto-v2-3-0-beta9-184/117001>\
**Category:** Product Support\
**Created:** [6 Maio , 2019 20:57 UTC](https://meta.discourse.org/t/restoring-discourse-1-9-backup-onto-v2-3-0-beta9-184/117001 "2019-05-06T20:57:54Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![oluies](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/oluies/32/120194_2.png) [@oluies](https://meta.discourse.org/u/oluies)\
**Post date:** [6 Maio , 2019 20:57 UTC](https://meta.discourse.org/t/restoring-discourse-1-9-backup-onto-v2-3-0-beta9-184/117001/1 "2019-05-06T20:57:54Z")

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![image](https://global.discourse-cdn.com/meta/original/3X/0/8/08db17a1534ebf1c53b2ac7deabe268bab2e6361.png)

> ERROR: cannot drop table users column email because other objects depend on it  
> DETAIL: trigger users\_email\_readonly on table users depends on table users column email  
> HINT: Use DROP … CASCADE to drop the dependent objects too.

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