使用 execute_batch 插入时 Psycopg2 类型错误

Question

我正在尝试使用 psycopg2 批量插入 postgres 数据库。我正在使用 %s 和一个元组列表，但它失败并出现以下错误：

File ".../python3.6/site-packages/psycopg2/extras.py", line 1183, in execute_batch
    sqls = [cur.mogrify(sql, args) for args in page]
  File ".../python3.6/site-packages/psycopg2/extras.py", line 1183, in <listcomp>
    sqls = [cur.mogrify(sql, args) for args in page]
TypeError: not all arguments converted during string formatting

这是我的代码：

import psycopg2
import psycopg2.extras
    conn = psycopg2.connect(
        database='mydb',
        user='name',
        password='pass')
    cur = conn.cursor()
    query = "INSERT INTO my_table (tweet_id, user_id, time, text, 
        reply_to_user_id, reply_to_tweet_id, reply_to_handle, is_retweet, 
        is_quote, quote_usr_id, quote_usr_handle, quote_id, quote_text, 
        retweet_usr_id, retweet_usr_handle, retweet_id, longitude, latitude, 
        location, time_zone) VALUES (%s);"
    #vals are values to insert, a list of tuples
    vals = [(123, 123, datetime.datetime(2017, 1, 18, 17, 12, 33), 
        "'Some Text'", None, None, None, None, None, None, None, None, 
        None, 1234, "'username'", 1234, None, None, "'Somewhere'", 
        "'Pacific Time (US & Canada)'"), 
        (321, 321, datetime.datetime(2017, 1, 18, 15, 43, 19), 
        "'More text'", 321, 321, "'person'", None, None, None, None, None,  
        None, None, None, None, None,None, "'faraway'", 
        "'Pacific Time (US & Canada)'")]
    psycopg2.extras.execute_batch(cur,query,vals)

我也试过用“NULL”字符串替换 None 无济于事。

瓦尔斯是一个元组列表，所以它不是从常见问题FAQ和各种 计算器的职位。

我希望这是我插入的一种类型的问题，但我不知道是哪一种。我已经将 psycopg2 python 与 sql数据类型转换图表进行了比较，似乎应该检查一下。

Answer 1

显式地将值的数量传递到您的查询中。

import psycopg2
import psycopg2.extras
conn = psycopg2.connect(
    database='mydb',
    user='name',
    password='pass')
    cur = conn.cursor()
query = "INSERT INTO my_table (tweet_id, user_id, time, text, 
    reply_to_user_id, reply_to_tweet_id, reply_to_handle, is_retweet, 
    is_quote, quote_usr_id, quote_usr_handle, quote_id, quote_text, 
    retweet_usr_id, retweet_usr_handle, retweet_id, longitude, latitude, 
    location, time_zone) VALUES (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s);"
#vals are values to insert, a list of tuples
vals = [(123, 123, datetime.datetime(2017, 1, 18, 17, 12, 33), 
    "'Some Text'", None, None, None, None, None, None, None, None, 
    None, 1234, "'username'", 1234, None, None, "'Somewhere'", 
    "'Pacific Time (US & Canada)'"), 
    (321, 321, datetime.datetime(2017, 1, 18, 15, 43, 19), 
    "'More text'", 321, 321, "'person'", None, None, None, None, None,  
    None, None, None, None, None,None, "'faraway'", 
    "'Pacific Time (US & Canada)'")]
psycopg2.extras.execute_batch(cur,query,vals)