86 lines
4.3 KiB
SQL
86 lines
4.3 KiB
SQL
-- =============================================================================
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-- FDW 反向映射配置（测试环境）— 在 test_etl_feiqiu 数据库中执行
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-- 用途：通过 postgres_fdw 将 test_zqyy_app.member_retention_clue 只读映射到
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-- test_etl_feiqiu，使 ETL DWS 任务在测试环境下可读取维客线索数据。
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-- 方向：test_etl_feiqiu → test_zqyy_app（与 setup_fdw_test.sql 方向相反）
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-- 前提：test_zqyy_app 数据库已部署 member_retention_clue 表
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-- 基于 setup_fdw_reverse.sql，仅将目标库替换为测试库
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-- CHANGE 2026-02-26 | member_birthday_manual → member_retention_clue（维客线索重构）
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-- =============================================================================
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-- -----------------------------------------------------------------------------
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-- 1. 安装 postgres_fdw 扩展（如已安装则跳过）
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-- -----------------------------------------------------------------------------
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CREATE EXTENSION IF NOT EXISTS postgres_fdw;
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-- -----------------------------------------------------------------------------
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-- 2. 创建外部服务器（指向 test_zqyy_app 测试业务库）
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-- -----------------------------------------------------------------------------
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CREATE SERVER IF NOT EXISTS test_zqyy_app_server
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FOREIGN DATA WRAPPER postgres_fdw
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OPTIONS (host 'localhost', dbname 'test_zqyy_app', port '5432');
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-- -----------------------------------------------------------------------------
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-- 3. 创建用户映射（只读角色）
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-- -----------------------------------------------------------------------------
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CREATE USER MAPPING IF NOT EXISTS FOR etl_user
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SERVER test_zqyy_app_server
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OPTIONS (user 'app_reader', password '***');
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-- -----------------------------------------------------------------------------
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-- 4. 创建目标 schema（存放来自业务库的外部表）
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-- -----------------------------------------------------------------------------
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CREATE SCHEMA IF NOT EXISTS fdw_app;
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-- -----------------------------------------------------------------------------
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-- 5. 创建外部表：member_retention_clue
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-- 映射 test_zqyy_app.public.member_retention_clue，ETL 侧只读
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-- -----------------------------------------------------------------------------
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CREATE FOREIGN TABLE IF NOT EXISTS fdw_app.member_retention_clue (
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id BIGINT,
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member_id BIGINT,
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category VARCHAR(20),
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summary VARCHAR(200),
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detail TEXT,
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recorded_by_assistant_id BIGINT,
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recorded_by_name VARCHAR(50),
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recorded_at TIMESTAMPTZ,
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site_id BIGINT
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) SERVER test_zqyy_app_server
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OPTIONS (schema_name 'public', table_name 'member_retention_clue');
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-- -----------------------------------------------------------------------------
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-- 6. 授权
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-- -----------------------------------------------------------------------------
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GRANT USAGE ON SCHEMA fdw_app TO etl_user;
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GRANT SELECT ON ALL TABLES IN SCHEMA fdw_app TO etl_user;
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ALTER DEFAULT PRIVILEGES IN SCHEMA fdw_app GRANT SELECT ON TABLES TO etl_user;
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-- =============================================================================
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-- 回滚脚本（按逆序执行）
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-- =============================================================================
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-- ALTER DEFAULT PRIVILEGES IN SCHEMA fdw_app REVOKE SELECT ON TABLES FROM etl_user;
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-- REVOKE SELECT ON ALL TABLES IN SCHEMA fdw_app FROM etl_user;
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-- REVOKE USAGE ON SCHEMA fdw_app FROM etl_user;
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-- DROP FOREIGN TABLE IF EXISTS fdw_app.member_retention_clue;
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-- DROP SCHEMA IF EXISTS fdw_app CASCADE;
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-- DROP USER MAPPING IF EXISTS FOR etl_user SERVER test_zqyy_app_server;
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-- DROP SERVER IF EXISTS test_zqyy_app_server CASCADE;
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-- =============================================================================
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-- 验证 SQL
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-- =============================================================================
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-- 1. 确认外部服务器存在
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-- SELECT srvname, srvoptions FROM pg_foreign_server
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-- WHERE srvname = 'test_zqyy_app_server';
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-- 2. 确认外部表列结构完整（9 列）
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-- SELECT column_name, data_type FROM information_schema.columns
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-- WHERE table_schema = 'fdw_app' AND table_name = 'member_retention_clue'
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-- ORDER BY ordinal_position;
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-- 3. 确认外部表可读取
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-- SELECT COUNT(*) FROM fdw_app.member_retention_clue;
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