Hello,
I recognized that for some reasons pgAdmin4 does not allow to re-attach some of the previously detached partitions:
Here is the test script to reproduce:
create table test (id integer, col1 integer, col2 integer) partition by list (id);
create table test1 partition of test for values in (1);
alter table test drop column col2;
create table test2 partition of test for values in (2);
alter table test detach partition test1;
alter table test detach partition test2;
pgAdmin4 allows to attach back test1 but not test2! Both tables can be re-attached with alter table command without any problems.
![](/media/maillist_attaches/pgadmin-support/2019/04/11/6a7dbbd1-e9ed-cf92-8747-bba083b251e4@phystech.edu/%421%43D%438%43C%43E%43A %44D%43A%440%430%43D%430 .png)
I'm on pgAdmin 4.2 on Centos7 and Fedora 29