34 lines
1,019 B
Ruby
34 lines
1,019 B
Ruby
# frozen_string_literal: true
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class AddPostgresIndexView < ActiveRecord::Migration[6.0]
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DOWNTIME = false
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def up
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execute(<<~SQL)
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CREATE VIEW postgres_indexes AS
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SELECT
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pg_namespace.nspname || '.' || pg_class.relname as identifier,
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pg_index.indexrelid,
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pg_namespace.nspname as schema,
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pg_class.relname as name,
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pg_index.indisunique as unique,
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pg_index.indisvalid as valid_index,
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pg_class.relispartition as partitioned,
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pg_index.indisexclusion as exclusion,
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pg_indexes.indexdef as definition,
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pg_relation_size(pg_class.oid) as ondisk_size_bytes
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FROM pg_index
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INNER JOIN pg_class ON pg_class.oid = pg_index.indexrelid
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INNER JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid
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INNER JOIN pg_indexes ON pg_class.relname = pg_indexes.indexname
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WHERE pg_namespace.nspname <> 'pg_catalog'
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SQL
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end
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def down
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execute(<<~SQL)
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DROP VIEW postgres_indexes
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SQL
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end
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end
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