35 lines
1.1 KiB
MySQL
35 lines
1.1 KiB
MySQL
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-- Chats Etichette
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CREATE TABLE IF NOT EXISTS public.chats_etichette (
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chatid UUID NOT NULL,
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etichettaid integer NOT NULL
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);
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-- Primary Key
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DO $$ BEGIN
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ALTER TABLE public.chats_etichette
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ADD CONSTRAINT chats_etichette_pkey PRIMARY KEY (chatid, etichettaid);
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EXCEPTION
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WHEN invalid_table_definition THEN
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RAISE NOTICE 'Primary key already exists. Ignoring...';
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END $$;
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-- Foreign Key to Chats
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DO $$ BEGIN IF NOT EXISTS (
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SELECT 1 FROM pg_constraint
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WHERE conname = 'chat_etichetta_fkey'
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) THEN
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ALTER TABLE public.chats_etichette
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ADD CONSTRAINT chat_etichetta_fkey
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FOREIGN KEY (chatid) REFERENCES public.chats (chatid)
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ON UPDATE CASCADE ON DELETE CASCADE;
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END IF;
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END $$;
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-- Foreign Key to Etichette
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DO $$ BEGIN IF NOT EXISTS (
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SELECT 1 FROM pg_constraint
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WHERE conname = 'etichetta_chetich_fkey'
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) THEN
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ALTER TABLE public.chats_etichette
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ADD CONSTRAINT etichetta_chetich_fkey
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FOREIGN KEY (etichettaid) REFERENCES public.etichette (id_etichetta)
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ON UPDATE CASCADE ON DELETE CASCADE;
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END IF;
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END $$;
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