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39 lines
1.0 KiB
Haskell
39 lines
1.0 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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module Hasura.RQL.DDL.Utils
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( clearHdbViews
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) where
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import qualified Data.Text as T
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import qualified Database.PG.Query as Q
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import Hasura.Prelude ((<>))
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clearHdbViews :: Q.Tx ()
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clearHdbViews = Q.multiQ (Q.fromText (clearHdbOnlyViews <> clearHdbViewsFunc))
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clearHdbOnlyViews :: T.Text
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clearHdbOnlyViews =
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"DO $$ DECLARE \
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\ r RECORD; \
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\ BEGIN \
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\ FOR r IN (SELECT viewname FROM pg_views WHERE schemaname = 'hdb_views') LOOP \
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\ EXECUTE 'DROP VIEW IF EXISTS hdb_views.' || quote_ident(r.viewname) || ' CASCADE'; \
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\ END LOOP; \
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\ END $$; "
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clearHdbViewsFunc :: T.Text
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clearHdbViewsFunc =
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"DO $$ DECLARE \
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\ _sql text; \
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\ BEGIN \
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\ SELECT INTO _sql \
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\ string_agg('DROP FUNCTION hdb_views.' || quote_ident(r.routine_name) || '() CASCADE;' \
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\ , E'\n') \
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\ FROM information_schema.routines r \
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\ WHERE r.specific_schema = 'hdb_views'; \
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\ IF _sql IS NOT NULL THEN \
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\ EXECUTE _sql; \
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\ END IF; \
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\ END $$; "
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