摘要：基本環境操作系統安裝安裝和安裝時序數據庫插件部署實踐時空數據庫德哥官網安裝文檔設置實驗下載測試數據創建數據庫解壓下載文件創建表結構導入數據查詢測試注釋數據庫啟動連接數據庫創

操作系統： centOS 7

postGreSQL ： 10

timescaleDB : 1.0 +

Centos7 安裝Postgresql10.5和PostGIS

PostgreSQL 時序數據庫插件 timescaleDB 部署實踐 - PostGIS + timescaleDB => PG時空數據庫 -- 德哥

官網安裝文檔：

TimescaleDB Docs - Installing

TimescaleDB Docs - Setting up TimescaleDB

    -- 下載測試數據
    wget https://timescaledata.blob.core.windows.net/datasets/weather_small.tar.gz

    wget https://timescaledata.blob.core.windows.net/datasets/weather_big.tar.gz

    -- 創建數據庫
    create database weather;

    -- 解壓下載文件
    tar -zxvf weather_small.tar.gz

    -- 創建表結構
    psql -U postgres -d weather < weather.sql

    -- 導入數據
    psql -U postgres -d weather -c "COPY conditions FROM weather_small_conditions.csv CSV"
    psql -U postgres -d weather -c "COPY locations FROM weather_small_locations.csv CSV"


    -- 查詢測試

    SELECT * FROM conditions c ORDER BY time DESC LIMIT 10;


    SELECT time, c.device_id, location,
    trunc(temperature, 2) temperature, trunc(humidity, 2) humidity
    FROM conditions c
    INNER JOIN locations l ON c.device_id = l.device_id
    WHERE l.environment = "outside"
    ORDER BY time DESC LIMIT 10;


    SELECT date_trunc("hour", time) "hour",
    trunc(avg(temperature), 2) avg_temp,
    trunc(min(temperature), 2) min_temp,
    trunc(max(temperature), 2) max_temp
    FROM conditions c
    WHERE c.device_id IN (
        SELECT device_id FROM locations
        WHERE location LIKE "field-%"
    ) GROUP BY "hour" ORDER BY "hour" ASC LIMIT 24;

注釋

-- 數據庫啟動
systemctl start postgresql-10

-- 連接數據庫
psql

-- 創建數據庫
CREATE database weather_big;

-- 創建時序關系
CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;

-- 導入數據
psql -U postgres -d weather_big < weather.sql
psql -U postgres -d weather_big -c "COPY conditions FROM weather_big_conditions.csv CSV"
psql -U postgres -d weather_big -c "COPY locations FROM weather_big_locations.csv CSV"

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