title: postGreSQL 插件 timescaleDB 安装使用 date: 2019-0

摘要：基本环境操作系统安装安装和安装时序数据库插件部署实践时空数据库德哥官网安装文档设置实验下载测试数据创建数据库解压下载文件创建表结构导入数据查询测试注释数据库启动连接数据库创

操作系统： centOS 7

postGreSQL ： 10

timescaleDB : 1.0 +

Centos7 安装Postgresql10.5和PostGIS

PostgreSQL 时序数据库插件 timescaleDB 部署实践 - PostGIS + timescaleDB => PG时空数据库 -- 德哥

官网安装文档：

TimescaleDB Docs - Installing

TimescaleDB Docs - Setting up TimescaleDB

    -- 下载测试数据
    wget https://timescaledata.blob.core.windows.net/datasets/weather_small.tar.gz

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

    -- 创建数据库
    create database weather;

    -- 解压下载文件
    tar -zxvf weather_small.tar.gz

    -- 创建表结构
    psql -U postgres -d weather < weather.sql

    -- 导入数据
    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"


    -- 查询测试

    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;

注释

-- 数据库启动
systemctl start postgresql-10

-- 连接数据库
psql

-- 创建数据库
CREATE database weather_big;

-- 创建时序关系
CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;

-- 导入数据
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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