32 lines
1.2 KiB
Ruby
32 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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class AddConstraintsView < Gitlab::Database::Migration[2.0]
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def up
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execute(<<~SQL)
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CREATE OR REPLACE VIEW postgres_constraints
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AS
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SELECT
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pg_constraint.oid AS oid,
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pg_constraint.conname AS name,
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pg_constraint.contype AS constraint_type,
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pg_constraint.convalidated AS constraint_valid,
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(SELECT array_agg(attname ORDER BY ordering)
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FROM unnest(pg_constraint.conkey) WITH ORDINALITY attnums(attnum, ordering)
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INNER JOIN pg_attribute ON pg_attribute.attnum = attnums.attnum AND pg_attribute.attrelid = pg_class.oid
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) AS column_names,
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pg_namespace.nspname::text || '.'::text || pg_class.relname::text AS table_identifier,
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-- pg_constraint reports a 0 oid rather than null if the constraint is not a partition child constraint.
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nullif(pg_constraint.conparentid, 0) AS parent_constraint_oid,
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pg_get_constraintdef(pg_constraint.oid) AS definition
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FROM pg_constraint
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INNER JOIN pg_class ON pg_constraint.conrelid = pg_class.oid
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INNER JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid;
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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_constraints;
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SQL
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end
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end
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