[英]pymssql bulk insert error (python)
尝试使用 pymssql 批量插入 CSV 文件,代码如下:
conn = pymssql.connect(host='server', user='user', password='secret', database='My_Dev')
cur = conn.cursor()
load = 'BULK INSERT TempStaging FROM \'/home/dross/python/scripts/var/csv/' + f + '.csv\' WITH (FIRSTROW = 1,FIELDTERMINATOR = ',',ROWTERMINATOR = \'\\n\') GO")'
cur.execute(load)
执行时得到以下错误:
Traceback (most recent call last):
File "./uploadResults.py", line 46, in <module>
cur.execute(sweepload)
File "pymssql.pyx", line 447, in pymssql.Cursor.execute (pymssql.c:7092)
File "_mssql.pyx", line 1009, in _mssql.MSSQLConnection.execute_query (_mssql.c:11585)
File "_mssql.pyx", line 1040, in _mssql.MSSQLConnection.execute_query (_mssql.c:11459)
File "_mssql.pyx", line 1160, in _mssql.MSSQLConnection.format_and_run_query (_mssql.c:12652)
File "_mssql.pyx", line 203, in _mssql.ensure_bytes (_mssql.c:2733)
AttributeError: 'tuple' object has no attribute 'encode'
第 46 行是 cur.execute 行
请注意, .format()
可能允许sql injection ,但如果您控制文件名,那么它并没有那么糟糕(不确定参数是否可以在这里工作)。
另外,在处理 SQL 时应该使用三引号字符串,你的生活会好很多。 像这样:
load = '''BULK INSERT TempStaging FROM /home/dross/python/scripts/var/csv/{}.csv WITH (FIRSTROW=1, FIELDTERMINATOR=',', ROWTERMINATOR='\n')'''.format(filename)
被三重引用,您还可以将其分解以使其更易于阅读:
load = '''
BULK INSERT TempStaging
FROM /home/dross/python/scripts/var/csv/{}.csv
WITH (
FIRSTROW=1
, FIELDTERMINATOR=','
, ROWTERMINATOR='\n'
)
'''.format(filename)
您应该将字符串定义如下:
load = "BULK INSERT TempStaging FROM /home/dross/python/scripts/var/csv/" + f + ".csv WITH ( FIRSTROW=1 , FIELDTERMINATOR=',' , ROWTERMINATOR='\\n')"
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