69 lines
2.1 KiB
SQL
69 lines
2.1 KiB
SQL
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-- =============================================
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-- 智慧水务管理系统 - TDengine 建表脚本
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-- 用于物联网设备遥测数据存储
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-- =============================================
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-- 创建数据库
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CREATE DATABASE IF NOT EXISTS water_iot
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KEEP 365
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DURATION 30
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BUFFER 256
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PAGES 256
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PAGESIZE 4
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WAL_LEVEL 1;
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USE water_iot;
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-- 遥测数据超级表
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CREATE STABLE IF NOT EXISTS iot_telemetry (
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ts TIMESTAMP,
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device_sn NCHAR(100),
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metric_key NCHAR(50),
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metric_value DOUBLE,
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quality TINYINT
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) TAGS (
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device_type NCHAR(30),
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area NCHAR(50),
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station NCHAR(100)
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);
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-- 按设备类型创建子表（模板，实际运行时动态创建）
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CREATE TABLE IF NOT EXISTS telemetry_flow_meter USING iot_telemetry TAGS('flow_meter', 'default', 'default');
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CREATE TABLE IF NOT EXISTS telemetry_pressure USING iot_telemetry TAGS('pressure_sensor', 'default', 'default');
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CREATE TABLE IF NOT EXISTS telemetry_valve USING iot_telemetry TAGS('valve', 'default', 'default');
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CREATE TABLE IF NOT EXISTS telemetry_water_quality USING iot_telemetry TAGS('water_quality', 'default', 'default');
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CREATE TABLE IF NOT EXISTS telemetry_level USING iot_telemetry TAGS('level_sensor', 'default', 'default');
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CREATE TABLE IF NOT EXISTS telemetry_pump USING iot_telemetry TAGS('pump', 'default', 'default');
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-- 设备事件超级表
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CREATE STABLE IF NOT EXISTS iot_device_event (
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ts TIMESTAMP,
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device_sn NCHAR(100),
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event_type NCHAR(30),
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event_data NCHAR(2000)
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) TAGS (
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device_type NCHAR(30),
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area NCHAR(50)
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);
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-- 小时聚合超级表（自动聚合）
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CREATE STABLE IF NOT EXISTS iot_telemetry_hourly (
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ts TIMESTAMP,
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device_sn NCHAR(100),
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metric_key NCHAR(50),
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min_value DOUBLE,
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max_value DOUBLE,
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avg_value DOUBLE,
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count_value INT
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) TAGS (
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device_type NCHAR(30),
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area NCHAR(50)
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);
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-- 日聚合视图（示例）
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-- CREATE STREAM IF NOT EXISTS hourly_stream INTO iot_telemetry_hourly AS
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-- SELECT _wstart as ts, device_sn, metric_key,
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-- MIN(metric_value), MAX(metric_value), AVG(metric_value), COUNT(*)
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-- FROM iot_telemetry
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-- INTERVAL(1h);
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