python - 使用 JSON 数据填充 SQLite 表，得到 : sqlite3. OperationalError: near "x": syntax error

Question

我有一个 SQLite 数据库，其中有四个表，名称分别为餐厅、酒吧、景点和住宿。每个表有 3 列，分别命名为 id、name 和 description。我正在尝试使用 JSON 文件中的数据填充数据库，如下所示:

{
  "restaurants": [
    {"id": "ChIJ8xR18JUn5IgRfwJJByM-quU", "name": "Columbia", "description": "Traditional Spanish restaurant, a branch of a long-standing local chain dating back to 1905."},
  ],
  "bars": [
    {"id": "ChIJ8aLBaJYn5IgR60p2CS_RHIw", "name": "Harrys", "description": "Chain outpost serving up Creole dishes in a leafy courtyard or on a balcony overlooking the bay."},
  ],
  "attractions": [
    {"id": "ChIJvRwErpUn5IgRaFNPl9Lv0eY", "name": "Flagler", "description": "Flagler College was founded in 1968. Formerly one of Henry Flagler's hotels, the college is allegedly home to many spirits. Tours are offered"},
  ],
  "lodging": [
    {"id": "ChIJz8NmD5Yn5IgRfgnWL-djaSM", "name": "Hemingway", "description": "Cottage-style B&B offering a gourmet breakfast & 6 rooms with private baths & traditional decor."},
  ]
}

每当脚本尝试执行查询时，我都会得到 sqlite3.OperationalError: near "x": syntax error 其中 x 是来自描述之一的随机词。错误示例如下所示:sqlite3.OperationalError: near "Spanish": syntax error。这个词并不总是西类牙语，但它总是来自其中一个描述的词。

我尝试了几种不同的方法，但总是得到相同的结果，这是我尝试过的一种方法:

import sqlite3
import json

places = json.load(open('locations.json'))
db = sqlite3.connect('data.db')

for place, data in places.items():
    table = place
    for detail in data:
        query = 'INSERT OR IGNORE INTO ' + place + ' VALUES (?, ?, ?), (' \
                + detail['id'] + ',' + detail['name'] + ',' + detail['description'] + ')'
        c = db.cursor()
        c.execute(query)
        c.close()

我也试过这样写查询:

query = 'INSERT OR IGNORE INTO {} VALUES ({}, {}, {})'\
          .format(table, detail['id'], detail['name'], detail['description'])

Answer 1

您当前的问题是查询中字符串值周围缺少引号。

您需要正确地参数化您的查询让数据库驱动程序担心类型转换、正确放置引号和转义参数:

query = """
    INSERT OR IGNORE INTO 
        {} 
    VALUES 
        (?, ?, ?)""".format(table)

c.execute(query, (detail['id'], detail['name'], detail['description']))

请注意 table name cannot be parameterized - 我们必须使用字符串格式将其插入到查询中 - 确保表名来自您信任的来源或/并正确验证它。