39 lines
1.2 KiB
MySQL
39 lines
1.2 KiB
MySQL
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-- Messages
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CREATE TABLE IF NOT EXISTS public.messages (
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messageid UUID DEFAULT gen_random_uuid () NOT NULL,
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chatid UUID NOT NULL,
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message TEXT,
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"time" TIMESTAMP WITHOUT TIME ZONE NOT NULL,
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isread boolean DEFAULT FALSE NOT NULL,
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sender UUID NOT NULL
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);
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-- Primary Key
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DO $$ BEGIN
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ALTER TABLE public.messages
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ADD CONSTRAINT messages_pkey PRIMARY KEY (messageid);
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EXCEPTION
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WHEN invalid_table_definition THEN
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RAISE NOTICE 'Primary key already exists. Ignoring...';
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END $$;
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-- Foreign Key to Chats
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DO $$ BEGIN IF NOT EXISTS (
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SELECT 1 FROM pg_constraint
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WHERE conname = 'messages_chatid_fkey'
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) THEN
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ALTER TABLE public.messages
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ADD CONSTRAINT messages_chatid_fkey
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FOREIGN KEY (chatid) REFERENCES public.chats (chatid)
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ON UPDATE CASCADE ON DELETE CASCADE;
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END IF;
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END $$;
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-- Foreign Key to Users
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DO $$ BEGIN IF NOT EXISTS (
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SELECT 1 FROM pg_constraint
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WHERE conname = 'messages_user_fkey'
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) THEN
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ALTER TABLE public.messages
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ADD CONSTRAINT messages_user_fkey
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FOREIGN KEY (sender) REFERENCES public.users (id)
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ON UPDATE CASCADE ON DELETE CASCADE;
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END IF;
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END $$;
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