26 lines
901 B
MySQL
26 lines
901 B
MySQL
|
alter table comment add column parent_id integer;
|
||
|
|
|
||
|
|
-- Constraints and index
|
||
|
|
alter table comment add constraint comment_parent_id_fkey foreign key (parent_id) REFERENCES comment(id) ON UPDATE CASCADE ON DELETE CASCADE;
|
||
|
|
create index idx_comment_parent on comment (parent_id);
|
||
|
|
|
||
|
|
-- Update the parent_id column
|
||
|
|
-- subpath(subpath(0, -1), -1) gets the immediate parent but it fails null checks
|
||
|
|
update comment set parent_id = cast(ltree2text(nullif(subpath(nullif(subpath(path, 0, -1), '0'), -1), '0')) as INTEGER);
|
||
|
|
|
||
|
|
alter table comment drop column path;
|
||
|
|
alter table comment_aggregates drop column child_count;
|
||
|
|
|
||
|
|
drop extension ltree;
|
||
|
|
|
||
|
|
-- Add back in the read column
|
||
|
|
alter table comment add column read boolean default false not null;
|
||
|
|
|
||
|
|
update comment c set read = cr.read
|
||
|
|
from comment_reply cr where cr.comment_id = c.id;
|
||
|
|
|
||
|
|
create view comment_alias_1 as select * from comment;
|
||
|
|
|
||
|
|
drop table comment_reply;
|
||
|
|
|