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|Reported by||Tessa Bradbury|
Body of first available message related to this bug follows.
The following bug has been logged on the website: Bug reference: 15611 Logged by: Tessa Bradbury Email address: (redacted) PostgreSQL version: 11.1 Operating system: Alpine Description: When I do the following: 1. Create a view with a `foo IN (arglist)` clause in the target list 2. pg_dump 3. Restore from the dump 4. Run pg_dump again The output of the two pg_dumps differs. The two versions represent the exact same underlying structure but because it's not exactly the same I get significant version control churn and it's hard to distinguish the real changes from the noise. Because dumping and restoring is tedious, you can also see this behaviour with pg_catalog.pg_get_viewdef(). ## Reproduction steps ## docker run --name test-postgres -d -p 5433:5432 postgres:11-alpine cat << EOF | psql --echo-all -h 127.0.0.1 -p 5433 -U postgres create table test_table (word character varying); create view test_view as (select word IN ('apple', 'bannana') as fruit from test_table); -- the string that would be used in a pg_dump select pg_catalog.pg_get_viewdef('test_view'); -- use that to create a new view, simulating a restore create view test_view2 as (SELECT ((test_table.word)::text = ANY ((ARRAY['apple'::character varying, 'bannana'::character varying])::text)) AS fruit FROM test_table); -- the string that would be used in the second pg_dump select pg_catalog.pg_get_viewdef('test_view2'); EOF ## Expected behaviour ## The output of both pg_catalog.pg_get_viewdef() calls is the same ## Actual behaviour ## The output differs. The two versions are: SELECT ((test_table.word)::text = ANY ((ARRAY['apple'::character varying, 'bannana'::character varying])::text)) AS fruit FROM test_table SELECT ((test_table.word)::text = ANY (ARRAY[('apple'::character varying)::text, ('bannana'::character varying)::text])) AS fruit FROM test_table
|2019-01-29 04:27:03+00||PG Bug reporting form||BUG #15611: pg_dump output changes after doing a restore with certain views|
|2019-02-04 20:36:59+00||Tom Lane||Re: BUG #15611: pg_dump output changes after doing a restore with certain views|