TypeError: not all arguments converted during string formatting in vertica_python

Question

我正在尝试使用 vertica_python 模块将一些值插入到我的 vertica 数据库中：


data = {'SalesNo':  ['12345', '678910'],
        'ProductID': ['12345_2021-10-21_08:51:22', '678910_2021-10-21_10:27:03'],
        'StoreID': ['6d522936e240cd64e1cf9176c5bfdff3bfe8146a345ff2', 'a7274d507d443c752be66b2851415138d75bd913d4949e'],
        'PurchaseTime': ['2021-10-21 08:51:22.846000', '2021-10-21 10:44:06.218000'],
        'Date': ['2021-10-21', '2021-10-21'],
        'StoreNumber': ['0', '1'],
        'PurchaseValue': ['348.0', '4893.23']
        }

dataset = pd.DataFrame(data)

column = dataset.columns
n = len(column)
SQL_insert = f"INSERT INTO table_name ({','.join(list(column))}) VALUES ({' ?,'*(n-1)} ?);"

valueTuplelst = [] 
for i,row in dataset.iterrows():
    valuelist = list(map(lambda x: str(x), row))
    valuelist = [None if element == "None" else element for element in valuelist]
    valuetup = tuple(valuelist)
    valueTuplelst.append(valuetup)

connection.cursor().executemany(SQL_insert, valueTuplelst)

等效的SQL语句是

INSERT INTO table_name (SalesNo,ProductID,StoreID,PurchaseTime,Date,StoreNumber,PurchaseValue) VALUES ('12345', '12345_2021-10-21_08:51:22', '6d522936e240cd64e1cf9176c5bfdff3bfe8146a345ff2', '2021-10-21 08:51:22.846000', '2021-10-21', '0', '348.0'), ('678910', '678910_2021-10-21_10:27:03', 'a7274d507d443c752be66b2851415138d75bd913d4949e', '2021-10-21 10:44:06.218000', '2021-10-21', '1', '4893.23')

当我执行它时，它在 SQL 中完美运行。但是我收到错误

File "C:\tools\Anaconda3\lib\site-packages\vertica_python\vertica\cursor.py", line 576, in format_operation_with_parameters
    operation = operation % tuple(tlist)
TypeError: not all arguments converted during string formatting

我似乎无法弄清楚为什么在将所有数据转换为字符串格式时会出现此错误。知道我哪里出错了吗？

Answer 1

我的猜测是您应该使用 %s 而不是 ? 作为字符串中的占位符：

SQL_insert = f"INSERT INTO table_name ({','.join(list(column))}) VALUES ({' %s,'*(n-1)} %s);"

那么输出的字符串会是'INSERT INTO table_name (SalesNo,ProductID,StoreID,PurchaseTime,Date,StoreNumber,PurchaseValue) VALUES ( %s, %s, %s, %s, %s, %s, %s);'，兼容operation = operation % tuple(tlist)替换

TypeError: not all arguments converted during string formatting in vertica_python

TypeError: not all arguments converted during string formatting in vertica_python

python

sql

vertica