I have a co-developer installing a new Virtual Machine and encountering a postgres error during the installation.
One of our SQL patch files is failing unexpectedly.
The patch is attempting to add columns to a table, The table involved currently has only 2 columns,
Interactively I can generate the same error in his current state.
psql -h ohio -U redcom ace_db
psql (9.3.6)
Type "help" for help.
ace_db=# select * from log.conference_history;
conf_id | max_size
---------+----------
(0 rows)
ace_db=# ALTER TABLE log.conference_history ADD talker_limit integer DEFAULT 0;
ERROR: tables can have at most 1600 columns
ace_db=#
ace_db=#
There can be removed (invisible columns)
select attname from pg_attribute where attrelid = 'test'::regclass and attnum > 0;
postgres=# select attname from pg_attribute where attrelid = 'test'::regclass and attnum > 0; ┌─────────┐ │ attname │ ╞═════════╡ │ a │ │ c │ │ d │ └─────────┘ (3 rows)
alter table test drop column a, drop column c;
postgres=# select attname from pg_attribute where attrelid = 'test'::regclass and attnum > 0; ┌──────────────────────────────┐ │ attname │ ╞══════════════════════════════╡ │ ........pg.dropped.1........ │ │ ........pg.dropped.2........ │ │ d │ └──────────────────────────────┘ (3 rows)
postgres=# select count(*) from pg_attribute where attrelid = 'test'::regclass and attnum > 0 and attisdropped; ┌───────┐ │ count │ ╞═══════╡ │ 2 │ └───────┘ (1 row)