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# frozen_string_literal: true
class FixDoubleEntriesInPostgresIndexView < Gitlab::Database::Migration[1.0]
def up
execute(<<~SQL)
DROP VIEW IF EXISTS postgres_indexes;
CREATE VIEW postgres_indexes AS
SELECT (pg_namespace.nspname::text || '.'::text) || i.relname::text AS identifier,
pg_index.indexrelid,
pg_namespace.nspname AS schema,
i.relname AS name,
pg_indexes.tablename,
a.amname AS type,
pg_index.indisunique AS "unique",
pg_index.indisvalid AS valid_index,
i.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(i.oid::regclass) AS ondisk_size_bytes
FROM pg_index
JOIN pg_class i ON i.oid = pg_index.indexrelid
JOIN pg_namespace ON i.relnamespace = pg_namespace.oid
JOIN pg_indexes ON i.relname = pg_indexes.indexname AND pg_namespace.nspname = pg_indexes.schemaname
JOIN pg_am a ON i.relam = a.oid
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 IF EXISTS postgres_indexes;
CREATE VIEW postgres_indexes AS
SELECT (pg_namespace.nspname::text || '.'::text) || i.relname::text AS identifier,
pg_index.indexrelid,
pg_namespace.nspname AS schema,
i.relname AS name,
pg_indexes.tablename,
a.amname AS type,
pg_index.indisunique AS "unique",
pg_index.indisvalid AS valid_index,
i.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(i.oid::regclass) AS ondisk_size_bytes
FROM pg_index
JOIN pg_class i ON i.oid = pg_index.indexrelid
JOIN pg_namespace ON i.relnamespace = pg_namespace.oid
JOIN pg_indexes ON i.relname = pg_indexes.indexname
JOIN pg_am a ON i.relam = a.oid
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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