SQL查询使用API​​：Python将图像文件插入MSSQL数据库

Question

在执行此命令时，在MSSQL Server 2017的查询表中

insert into Register1 (logo) SELECT BulkColumn FROM Openrowset( Bulk 'C:\\Users\Vitriv-Desktop\Desktop\Capture.JPG', Single_Blob) as img

结果： (1 row affected)

来自python shell：正确建立数据库后

import pypyodbc

cnxn = pypyodbc.connect('Driver={ODBC Driver 13 for SQL Server};'
                    'Server=DESKTOP-C6RS3DO;'
                    'Database=demo2016;'
                    'uid=sa;pwd=sa')
print('connected <br/>')
cursor = cnxn.cursor()

SQLInsertImg = "insert into Register1 (logo) SELECT BulkColumn FROM Openrowset (Bulk 'C:\\Users\PC\Desktop\Capture.JPG', Single_Blob) as img"
cursor.execute(SQLInsertImg)

cnxn.commit()
print("Query Inserted Successfully...!")

结果将是：

>>> SQLInsertImg = "insert into Register1 (logo) SELECT BulkColumn FROM Openrowset (Bulk 'C:\\Users\PC\Desktop\Capture.JPG', Single_Blob) as img"
>>> cursor.execute(SQLInsertImg)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1626, in execute
    self.execdirect(query_string)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1652, in execdirect
    check_success(self, ret)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1007, in check_success
    ctrl_err(SQL_HANDLE_STMT, ODBC_obj.stmt_h, ret, ODBC_obj.ansi)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 975, in ctrl_err
    raise ProgrammingError(state,err_text)
pypyodbc.ProgrammingError: ('42000', '[42000] [Microsoft][ODBC Driver 13 for SQL Server][SQL Server]Cannot bulk load because the file "C:\\Users\\PC\\Desktop\\Capture.JPG" could not be opened. Operating system error code 3(The system cannot find the path specified.).')
>>>

然后我用

修改了上面的代码

SQLInsertImg = "insert into Register1 (logo) SELECT BulkColumn FROM Openrowset (Bulk r'C:\Users\PC\Desktop\Capture.JPG', Single_Blob) as img"

结果：

>>> cursor.execute(SQLInsertImg)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1626, in execute
    self.execdirect(query_string)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1652, in execdirect
    check_success(self, ret)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1007, in check_success
    ctrl_err(SQL_HANDLE_STMT, ODBC_obj.stmt_h, ret, ODBC_obj.ansi)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 975, in ctrl_err
    raise ProgrammingError(state,err_text)
pypyodbc.ProgrammingError: ('42000', '[42000] [Microsoft][ODBC Driver 13 for SQL Server][SQL Server]Cannot bulk load because the file "C:\\Users\\PC\\Desktop\\Capture.JPG" could not be opened. Operating system error code 3(The system cannot find the path specified.).')

我们如何解决上述问题，即使用MSSQL而不使用python shell。

尝试

SQLInsertImg = "insert into Register1 (logo) SELECT BulkColumn FROM Openrowset (Bulk r"C:\Users\PC\Desktop\Capture.JPG", Single_Blob) as img"

我得到的结果：

>>> SQLInsertImg = "insert into Register1 (logo) SELECT BulkColumn FROM Openrowset (Bulk r"C:\Users\PC\Desktop\Capture.JPG ", Single_Blob) as img"
  File "<stdin>", line 1
    SQLInsertImg = "insert into Register1 (logo) SELECT BulkColumn FROM Openrowset (Bulk r"C:\Users\PC\Desktop\Capture.JPG ", Single_Blob) as img"
                                                                                           ^
SyntaxError: invalid syntax
>>> cursor.execute(SQLInsertImg)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1626, in execute
    self.execdirect(query_string)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1652, in execdirect
    check_success(self, ret)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 1007, in check_success
    ctrl_err(SQL_HANDLE_STMT, ODBC_obj.stmt_h, ret, ODBC_obj.ansi)
  File "C:\Users\Vitriv-Desktop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pypyodbc.py", line 975, in ctrl_err
    raise ProgrammingError(state,err_text)
pypyodbc.ProgrammingError: ('42000', "[42000] [Microsoft][ODBC Driver 13 for SQL Server][SQL Server]Incorrect syntax near 'C:'.")
>>>

SQLInsertImg = insert into Register1 (logo) SELECT BulkColumn FROM OPENROWSET (BULK 'C:\\Capture.JPG', SINGLE_NCLOB) as img

>>> import pypyodbc
>>>
>>> cnxn = pypyodbc.connect('Driver={ODBC Driver 13 for SQL Server};'
...                  'Server=DESKTOP-C6RS3DO;'
...                   'Database=demo2016;'
...                   'uid=sa;pwd=sa')
>>> print('connected <br/>')
connected <br/>
>>> cursor = cnxn.cursor()
>>> SQLInsertImg = insert into Register1 (logo) SELECT BulkColumn FROM OPENROWSET (BULK 'C:\\Capture', SINGLE_NCLOB) as img
  File "<stdin>", line 1
    SQLInsertImg = insert into Register1 (logo) SELECT BulkColumn FROM OPENROWSET (BULK 'C:\\Capture', SINGLE_NCLOB) as img
                             ^
SyntaxError: invalid syntax