使用 Python 插入 Teradata 时日期无效

Question

我正在开发一个 python 片段，它将使用 pyodbc 将数据帧插入到 teradata 表中。我无法克服的错误是......

File "file.py", line 33, in <module>
cursor.execute("INSERT INTO DB.TABLE (MASDIV,TRXTYPE,STATION,TUNING_EVNT_START_DT,DOW,MOY,TRANSACTIONS)VALUESrow['MASDIV'],'trx_chtr',row['STATION'],row['TUNING_EVNT_START_DT'],row['DOW'],row['MOY'],row['TRANSACTIONS'])
pyodbc.DataError: ('22008', '[22008] [Teradata][ODBC Teradata Driver][TeradataDatabase] Invalid date supplied for Table.TUNING_EVNT_START_DT. (-2666) (SQLExecDirectW)')

为了填写...我有一个 Teradata 表，我想获取一个数据框并将其插入其中。那张桌子被做成了。

CREATE SET TABLE  DB.TABLE, FALLBACK
   (PK decimal(10,0) NOT NULL GENERATED ALWAYS AS IDENTITY
            (START WITH 1 
            INCREMENT BY 1 
            MINVALUE 1 
            --MAXVALUE 2147483647 
            NO CYCLE),
    TRXTYPE VARCHAR(10),
    MASDIV VARCHAR(30),
    STATION VARCHAR(50),
    TUNING_EVNT_START_DT DATE format 'MM/DD/YYYY',
    DOW VARCHAR(3),
    MOY VARCHAR(10),
    TRANSACTIONS INT,
    ANOMALY_FLAG INT NOT NULL DEFAULT 1)
PRIMARY INDEX (PK);

主键和异常标志会自动填写。下面是我正在使用并遇到错误的脚本。它正在读取 csv 并创建数据框。 csv 的前两行（包括标题）看起来像...

MASDIV              | STATION                    | TUNING_EVNT_START_DT | DOW |    MOY    | TRANSACTIONS

Staten Island       | WFUTDT4                    |         9/12/18      | Wed | September | 538

San Fernando Valley | American Heroes Channel HD |        6/28/2018     | Thu | June      | 12382

这是我正在使用的脚本...

 '''
Written by Bobby October 1st, 2018
REFERENCE
https://tomaztsql.wordpkress.com/2018/07/15/using-python-pandas-dataframe-to-read-and-insert-data-to-microsoft-sql-server/
'''

import pandas as pd
import pyodbc
from datetime import datetime

#READ IN CSV TEST DATA
df = pd.read_csv('Data\\test_set.csv')
print('CSV LOADED')

#ADJUST DATE FORMAT
df['TUNING_EVNT_START_DT'] = pd.to_datetime(df.TUNING_EVNT_START_DT)
#df['TUNING_EVNT_START_DT'] = 
df['TUNING_EVNT_START_DT'].dt.strftime('%m/%d/%Y')
df['TUNING_EVNT_START_DT'] = df['TUNING_EVNT_START_DT'].dt.strftime('%Y-%m-%d')
print('DATE FORMAT CHANGED')
print(df)

#PUSH TO DATABASE
conn = pyodbc.connect('dsn=ConnectR')
cursor = conn.cursor()

# Database table has columns...
# PK | TRXYPE | MASDIV | STATION | TUNING_EVNT_START_DT | DOW | MOY | 
TRANSACTIONS | ANOMALY_FLAG
# PK is autoincrementing, TRXTYPE needs to be specified on insert command, 
and ANOMALY_FLAG defaults to 1 for yes

for index, row in df.iterrows():
        cursor.execute("INSERT INTO DLABBUAnalytics_Lab.Anomaly_Detection_SuperSet(MASDIV,TRXTYPE,STATION,TUNING_EVNT_START_DT,DOW,MOY,TRANSACTIONS)VALUES(?,?,?,?,?,?,?)", row['MASDIV'],'trx_chtr',row['STATION'],row['TUNING_EVNT_START_DT'],row['DOW'],row['MOY'],row['TRANSACTIONS'])
    conn.commit()
    print('RECORD ENTERED')

print('DF SUCCESSFULLY WRITTEN TO DB')

#PULL FROM DATABASE
sql_conn = pyodbc.connect('dsn=ConnectR')
query = 'SELECT * FROM DLABBUAnalytics_Lab.Anomaly_Detection_SuperSet;'
df = pd.read_sql(query, sql_conn)
print(df)

因此，我正在转换日期格式并尝试将逐行插入 Teradata 表中。第一条记录读入并在数据库中。第二条记录抛出顶部的错误。日期是 2018 年 6 月 28 日，我已将其更改为 18 年 6 月 11 日，只是为了看看是否有混淆日期和月份，但这仍然有同样的问题。列是否在某处脱落，并且它正在尝试将不同列的值插入到日期列中。

非常感谢任何想法或帮助！

Answer 1

所以问题在于表格的格式。最初它被构建为具有 CSV 中的 MM/DD/YYYY 格式，但将其更改为 YYYY-MM-DD 格式使得脚本可以完美运行。

谢谢！