db 자체로 수정하려면 primary는 geom이어야
Cannot Delete Error
Data provider does not support deleting features for PostGIS tables?
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https://gis.stackexchange.com/questions/286103/data-provider-does-not-support-deleting-features-for-postgis-tables
PostgreSQL Primary Key
Summary: in this tutorial, we will show you what the primary key is and how to manage PostgreSQL primary key constraints through SQL statements. A primary key is a column or a group of columns used to identify a row uniquely in a table. You define primary keys through primary key constraints.
https://www.postgresqltutorial.com/postgresql-primary-key/
Remove Data - duplicated
Postgres could not create unique index, key is duplicated
I'm trying to add a column to a table in my Postgres 9.3 database with this seemingly simple SQL: ALTER TABLE quizzes ADD COLUMN deleted BOOLEAN NOT NULL DEFAULT false; However, I'm getting the following error: ERROR: could not create unique index "quizzes_pkey" DETAIL: Key (id)=(10557462) is duplicated.
https://stackoverflow.com/questions/45315510/postgres-could-not-create-unique-index-key-is-duplicated
