diff options
Diffstat (limited to 'db/migrate/20220831182105_add_constraints_view.rb')
-rw-r--r-- | db/migrate/20220831182105_add_constraints_view.rb | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/db/migrate/20220831182105_add_constraints_view.rb b/db/migrate/20220831182105_add_constraints_view.rb new file mode 100644 index 00000000000..03c183b6e9f --- /dev/null +++ b/db/migrate/20220831182105_add_constraints_view.rb @@ -0,0 +1,32 @@ +# frozen_string_literal: true + +class AddConstraintsView < Gitlab::Database::Migration[2.0] + def up + execute(<<~SQL) + CREATE OR REPLACE VIEW postgres_constraints + AS + SELECT + pg_constraint.oid AS oid, + pg_constraint.conname AS name, + pg_constraint.contype AS constraint_type, + pg_constraint.convalidated AS constraint_valid, + (SELECT array_agg(attname ORDER BY ordering) + FROM unnest(pg_constraint.conkey) WITH ORDINALITY attnums(attnum, ordering) + INNER JOIN pg_attribute ON pg_attribute.attnum = attnums.attnum AND pg_attribute.attrelid = pg_class.oid + ) AS column_names, + pg_namespace.nspname::text || '.'::text || pg_class.relname::text AS table_identifier, + -- pg_constraint reports a 0 oid rather than null if the constraint is not a partition child constraint. + nullif(pg_constraint.conparentid, 0) AS parent_constraint_oid, + pg_get_constraintdef(pg_constraint.oid) AS definition + FROM pg_constraint + INNER JOIN pg_class ON pg_constraint.conrelid = pg_class.oid + INNER JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid; + SQL + end + + def down + execute(<<~SQL) + DROP VIEW postgres_constraints; + SQL + end +end |