30 lines
993 B
PL/PgSQL
30 lines
993 B
PL/PgSQL
-- 切换到目标数据库
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\c postgres;
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CREATE OR REPLACE FUNCTION update_country_modified_column()
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RETURNS TRIGGER AS $$
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BEGIN
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NEW.updated_at = CURRENT_TIMESTAMP;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql VOLATILE;
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DO $$
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BEGIN
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IF NOT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'country') THEN
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CREATE TABLE "country" ( -- country是关键字，用双引号包裹
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id UUID DEFAULT gen_random_uuid_v7() PRIMARY KEY NOT NULL,
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deleted BOOLEAN NOT NULL DEFAULT FALSE,
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created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TRIGGER update_country_updated_at
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BEFORE UPDATE ON "country"
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FOR EACH ROW
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EXECUTE FUNCTION update_country_modified_column();
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RAISE NOTICE 'Created country table and trigger';
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ELSE
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RAISE NOTICE 'country table already exists';
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END IF;
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END $$; |