小编Viv*_*nda的帖子

如果有人知道请帮助我，我是 PostgreSQL 的全新用户。

import psycopg2
import sys
from  flask import Flask,render_template
import os

os.chmod("/home/dell/Charts/static/data/data.csv", 0o777)
con = None
con = psycopg2.connect("host='localhost' dbname='mydb' user='postgres' password='Password'")  
cur = con.cursor()

cur.execute("""COPY data_lc TO '/home/dell/Charts/static/data/data.csv' DELIMITER ',' CSV HEADER;""")

cur.close()

这段代码工作正常

但我想知道有没有办法通过D3.js直接从PostgreSQL获取数据

<div class="panel panel-default">
    <div class="panel-heading">
        <h4>LineChart</h4>
    </div>
    <div class="panel-body">
        <div id="linechart"></div>
    </div>
</div>
<script src="static/js/Linechart.js"></script>