【发布时间】：2021-08-09 21:18:21
【问题描述】：
我正在尝试使用 psycopg2 创建一个表，然后从一些 json 中插入外部数据。为此，我定义了 2 个函数：create_words_table() 和 insert_data()：
con = psycopg2.connect(
database="dbname",
user="username",
password="password",
host="127.0.0.1",
port="5432"
)
cur = con.cursor()
def create_words_table():
cur.execute(""" CREATE TABLE WORDS
(word_ CHAR(50),
POS_ CHAR(20),
case_ CHAR(20),
animacy_ CHAR(20),
tense_ CHAR(20),
person_ CHAR(20),
number_ CHAR(20),
gender_ CHAR(20),
mood_ CHAR(20),
tonality_ CHAR(20),
POS_score_ REAL NOT NULL,
NEU_score_ REAL NOT NULL,
NEG_score_ REAL NOT NULL );""")
def insert_data(word):
# handle_dict() is a function for getting outer data.
if handle_dict(word) is not None:
(word_from_dict, pos_from_dict, case_from_dict, gender_from_dict,
mood_from_dict, number_from_dict, person_from_dict, tense_from_dict,
tonality_from_dict, pos_score_from_dict, neu_score_from_dict,
neg_score_from_dict) = handle_dict(word)
cur.execute('''INSERT INTO WORDS (word_, POS_, case_, gender_, mood_,
number_, person_, tense_, tonality_, pos_score_, neu_score_, neg_score_)
VALUES (word_from_dict, pos_from_dict, case_from_dict, gender_from_dict,
mood_from_dict, number_from_dict, person_from_dict, tense_from_dict,
tonality_from_dict, pos_score_from_dict, neu_score_from_dict,
neg_score_from_dict)''')
con.commit()
con.close()
所以，尝试执行它们：
if __name__ == '__main__':
create_words_table()
logger.info("table created")
insert_data()
logger.info("Records inserted successfully")
我得到了进一步的错误：
Traceback (most recent call last):
File "path\to\file", line 178, in <module>
main()
File "path\to\file", line 172, in main
insert_data()
File "path\to\file", line 148, in insert_data
cur.execute('''
psycopg2.errors.UndefinedColumn: ОШИБКА: столбец "word_from_dict" не существует
# ERROR: column "word_from_dict" does not exist ###
LINE 4: VALUES (word_from_dict, pos_from_dict, case_from_dic...
查看文档，我没有看到应用简单 INSERT 查询有任何错误，也无法理解为什么 psycopg2 将单词 VALUE 之后的元组作为表的字段。 如果有人能帮我解决这个问题，我将不胜感激。
【问题讨论】：
标签： python sql postgresql psycopg2