103 lines
3.4 KiB
SQL
103 lines
3.4 KiB
SQL
-- 切换到目标数据库
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\c postgres;
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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 = 'currency') THEN
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CREATE TABLE currency (
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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_currency_updated_at
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BEFORE UPDATE ON "currency"
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FOR EACH ROW
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EXECUTE FUNCTION update_data_modified_column();
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RAISE NOTICE 'created currency table and trigger';
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ELSE
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RAISE NOTICE 'currency table already exists';
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END IF;
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IF NOT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'currency_name') THEN
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CREATE TABLE currency_name (
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id UUID DEFAULT gen_random_uuid_v7() PRIMARY KEY NOT NULL,
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currency_id UUID NOT NULL,
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name VARCHAR 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_name_updated_at
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BEFORE UPDATE ON "currency_name"
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FOR EACH ROW
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EXECUTE FUNCTION update_data_modified_column();
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RAISE NOTICE 'created currency_name table and trigger';
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ELSE
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RAISE NOTICE 'currency_name table already exists';
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END IF;
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IF NOT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'currency_code') THEN
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CREATE TABLE currency_code (
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id UUID DEFAULT gen_random_uuid_v7() PRIMARY KEY NOT NULL,
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currency_id UUID NOT NULL,
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code VARCHAR 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_code_updated_at
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BEFORE UPDATE ON "currency_code"
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FOR EACH ROW
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EXECUTE FUNCTION update_data_modified_column();
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RAISE NOTICE 'created currency_code table and trigger';
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ELSE
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RAISE NOTICE 'currency_code table already exists';
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END IF;
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END $$;
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DO $$
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DECLARE
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view_exists BOOLEAN;
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BEGIN
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-- 检查视图是否已存在
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SELECT EXISTS (
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SELECT 1 FROM information_schema.views
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WHERE table_name = 'currency_info_view'
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) INTO view_exists;
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-- 若视图存在，先删除（避免字段名冲突）
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IF view_exists THEN
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DROP VIEW currency_info_view;
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RAISE NOTICE '已删除旧视图 currency_info_view';
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END IF;
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-- 创建或更新视图
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CREATE OR REPLACE VIEW currency_info_view AS
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SELECT
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u.id AS currency_id,
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n.name AS name,
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c.code AS code,
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u.deleted AS deleted
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FROM
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currency u
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JOIN
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currency_name n ON u.id = n.currency_id
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JOIN
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currency_code c ON u.id = c.currency_id
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WHERE
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u.deleted = FALSE;
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-- 根据视图是否已存在输出不同提示
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IF view_exists THEN
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RAISE NOTICE '视图 currency_info_view 已更新（删除旧视图后重建）';
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ELSE
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RAISE NOTICE '视图 currency_info_view 已创建';
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END IF;
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EXCEPTION
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WHEN OTHERS THEN
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RAISE NOTICE '处理视图时发生错误: %', SQLERRM;
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END $$; |