How to solve 1064 error PyMySQL in Jupyter notebook? - jupyter-notebook

Question

I am using PyMySQLto create a simple table as a practice, but I can't create the table and getting this error: "ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax"
Can anyone point my mistake?
The code:
# CREATE TABLE
# open connection
connection = pymysql.connect(cnx['host'],cnx['username'],cnx['password'],cnx['db'])
# open cursor
cursor = connection.cursor()
# query for creating table
create_table = """
CREATE TABLE classroom (
student_id INTEGER PRIMARY KEY,
name VARCHAR(20),
gender CMAR(1),
physics_marks INTEGER,
chemistry_marks INTEGER,
mathematics_marks INTEGER
);"""
# execute query
cursor.execute (create_table)
# commit changes
connection.commit()
# close connection
connection.close()
The error:
---------------------------------------------------------------------------
ProgrammingError Traceback (most recent call last)
<ipython-input-34-358e0fa696d2> in <module>
15 );"""
16 # execute query
---> 17 cursor.execute (create_table)
18 # commit changes
19 connection.commit()
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\cursors.py in execute(self, query, args)
168 query = self.mogrify(query, args)
169
--> 170 result = self._query(query)
171 self._executed = query
172 return result
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\cursors.py in _query(self, q)
326 self._last_executed = q
327 self._clear_result()
--> 328 conn.query(q)
329 self._do_get_result()
330 return self.rowcount
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\connections.py in query(self, sql, unbuffered)
515 sql = sql.encode(self.encoding, 'surrogateescape')
516 self._execute_command(COMMAND.COM_QUERY, sql)
--> 517 self._affected_rows = self._read_query_result(unbuffered=unbuffered)
518 return self._affected_rows
519
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\connections.py in _read_query_result(self, unbuffered)
730 else:
731 result = MySQLResult(self)
--> 732 result.read()
733 self._result = result
734 if result.server_status is not None:
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\connections.py in read(self)
1073 def read(self):
1074 try:
-> 1075 first_packet = self.connection._read_packet()
1076
1077 if first_packet.is_ok_packet():
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\connections.py in _read_packet(self, packet_type)
682
683 packet = packet_type(buff, self.encoding)
--> 684 packet.check_error()
685 return packet
686
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\protocol.py in check_error(self)
218 errno = self.read_uint16()
219 if DEBUG: print("errno =", errno)
--> 220 err.raise_mysql_exception(self._data)
221
222 def dump(self):
~\AppData\Local\Continuum\anaconda3\lib\site-packages\pymysql\err.py in raise_mysql_exception(data)
107 errval = data[3:].decode('utf-8', 'replace')
108 errorclass = error_map.get(errno, InternalError)
--> 109 raise errorclass(errno, errval)
ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CMAR(1),\n physics_marks INTEGER,\n chemistr' at line 4")

Answer 1

Been a while since I have played with MySQL with python... Looks like some of the table field keys are incorrect (From what I'm used to seeing). Maybe try this and see how you go.
create_table = """
CREATE TABLE classroom (
student_id INT(11) AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(20) NOT NULL,
gender CHAR(1) NOT NULL,
physics_marks INT(4) NOT NULL,
chemistry_marks INT(4) NOT NULL,
mathematics_marks INT(4) NOT NULL,
);"""