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# frozen_string_literal: true
class ExtendPostgresIndexesView < ActiveRecord::Migration[6.0]
DOWNTIME = false
def up
execute(<<~SQL)
DROP VIEW postgres_indexes;
CREATE VIEW postgres_indexes AS
SELECT (pg_namespace.nspname::text || '.'::text) || pg_class.relname::text AS identifier,
pg_index.indexrelid,
pg_namespace.nspname AS schema,
pg_class.relname AS name,
pg_index.indisunique AS "unique",
pg_index.indisvalid AS valid_index,
pg_class.relispartition AS partitioned,
pg_index.indisexclusion AS exclusion,
pg_index.indexprs IS NOT NULL as expression,
pg_index.indpred IS NOT NULL as partial,
pg_indexes.indexdef AS definition,
pg_relation_size(pg_class.oid::regclass) AS ondisk_size_bytes
FROM pg_index
JOIN pg_class ON pg_class.oid = pg_index.indexrelid
JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid
JOIN pg_indexes ON pg_class.relname = pg_indexes.indexname
WHERE pg_namespace.nspname <> 'pg_catalog'::name
AND (pg_namespace.nspname = ANY (ARRAY["current_schema"(), 'gitlab_partitions_dynamic'::name, 'gitlab_partitions_static'::name]));
SQL
end
def down
execute(<<~SQL)
DROP VIEW postgres_indexes;
CREATE VIEW postgres_indexes AS
SELECT (pg_namespace.nspname::text || '.'::text) || pg_class.relname::text AS identifier,
pg_index.indexrelid,
pg_namespace.nspname AS schema,
pg_class.relname AS name,
pg_index.indisunique AS "unique",
pg_index.indisvalid AS valid_index,
pg_class.relispartition AS partitioned,
pg_index.indisexclusion AS exclusion,
pg_indexes.indexdef AS definition,
pg_relation_size(pg_class.oid::regclass) AS ondisk_size_bytes
FROM pg_index
JOIN pg_class ON pg_class.oid = pg_index.indexrelid
JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid
JOIN pg_indexes ON pg_class.relname = pg_indexes.indexname
WHERE pg_namespace.nspname <> 'pg_catalog'::name
AND (pg_namespace.nspname = ANY (ARRAY["current_schema"(), 'gitlab_partitions_dynamic'::name, 'gitlab_partitions_static'::name]));
SQL
end
end
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