mysql存入json数据

import pymysql
import pandas as pd
import csv
def connectdb():
    print('连接到mysql服务器...')
    db = pymysql.connect("localhost","root","root","babyheart" )
    print('连接上了!')
    return db

def querydb(db, sql):
    try:        
        return pd.read_sql(sql, con=db)
    except:
        return "Error: unable to fecth data"
    
def createtable(db, sql):
    cursor = db.cursor()    
    cursor.execute("DROP TABLE IF EXISTS heart_data")
    cursor.execute(sql)

def insert_by_many(db, param, sql):
    cur = db.cursor()
    try:        
        cur.executemany(sql, param)
        db.commit()
    except Exception as e:
        print(e)

插入json格式的一个例子：
json有种格式，JSON_ARRAY 和 JSON_OBJECT

# 先创建表
db = connectdb()
sql = 'CREATE TABLE heart_data(id varchar(6) PRIMARY KEY NOT NULL,value json, nst_result varchar(6))'
createtable(db,sql)
# 插入一条数据
s = "1,2,3,4,5,6,7"   
sql = 'INSERT INTO heart_data (id, value, nst_result) VALUES (%s, JSON_ARRAY(%s), %s)'
param = [["a", s, "1"]]
insert_by_many(db, param, sql)

另外使用参考：https://juejin.im/post/5cdd528351882508cb6f862e