40 lines
1.2 KiB
Ruby
40 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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class AddPartitionsView < 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 OR REPLACE VIEW postgres_partitions AS
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SELECT
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pg_namespace.nspname::text || '.'::text || pg_class.relname::text AS identifier,
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pg_class.oid AS oid,
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pg_namespace.nspname AS schema,
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pg_class.relname AS name,
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parent_namespace.nspname::text || '.'::text || parent_class.relname::text AS parent_identifier,
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pg_get_expr(pg_class.relpartbound, pg_inherits.inhrelid) AS condition
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FROM pg_class
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INNER JOIN pg_namespace
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ON pg_namespace.oid = pg_class.relnamespace
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INNER JOIN pg_inherits
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ON pg_class.oid = pg_inherits.inhrelid
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INNER JOIN pg_class parent_class
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ON pg_inherits.inhparent = parent_class.oid
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INNER JOIN pg_namespace parent_namespace
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ON parent_class.relnamespace = parent_namespace.oid
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WHERE pg_class.relispartition
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AND pg_namespace.nspname IN (
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current_schema(),
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'gitlab_partitions_dynamic',
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'gitlab_partitions_static'
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)
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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 IF EXISTS postgres_partitions
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SQL
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end
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end
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