MySQL Connector could not process parameters

Question

I’m trying to loop through an array and insert each element into a table. As far as I can see my syntax is correct and I took this code straight from Microsoft Azure’s documentation.

try:
   conn = mysql.connector.connect(**config)
   print("Connection established")
except mysql.connector.Error as err:
  if err.errno == errorcode.ER_ACCESS_DENIED_ERROR:
    print("Something is wrong with the user name or password")
  elif err.errno == errorcode.ER_BAD_DB_ERROR:
    print("Database does not exist")
  else:
    print(err)
else:
  cursor = conn.cursor()
data = ['1','2','3','4','5']


for x in data:
   cursor.execute("INSERT INTO test (serial) VALUES (%s)",(x))
   print("Inserted",cursor.rowcount,"row(s) of data.")

conn.commit()
cursor.close()
conn.close()
print("Done.")

When I run this is gets to cursor.execute(...) and then fails. Here is the stack trace.

Traceback (most recent call last):
File “test.py”, line 29, in
cursor.execute(“INSERT INTO test (serial) VALUES (%s)”,(“test”))
File “C:UsersAlexJAppDataLocalProgramsPythonPython37libsite-packagesmysqlconnectorcursor_cext.py”, line 248, in execute
prepared = self._cnx.prepare_for_mysql(params)
File “C:UsersAlexJAppDataLocalProgramsPythonPython37libsite-packagesmysqlconnectorconnection_cext.py”, line 538, in prepare_for_mysql
raise ValueError(“Could not process parameters”)
ValueError: Could not process parameters

Asked By: ajjohnson190

||

Source

Answer 1

Try this:

for x in data:
    value = "test"
    query = "INSERT INTO test (serial) VALUES (%s)"
    cursor.execute(query,(value,))
    print("Inserted",cursor.rowcount,"row(s) of data.")

Since you are using mysql module, cursor.execute requires a sql query and a tuple as parameters

Answered By: Lucas Hort

Answer 2

Nice answer from @lucas, but maybe this help other, cz i think more cleaner

sql = "INSERT INTO your_db (your_table) VALUES (%s)"
val = [("data could be array")]
cursor = cnx.cursor()
cursor.execute(sql, val)
print("Inserted",cursor.rowcount,"row(s) of data.")
cnx.commit()
cnx.close()

Cz this is useful for my purpose, to input multiple data.

Answered By: Budi Mulyo

Answer 3

I’m facing same issue but instead of array, I’m looping through a set and insert each item into mysql db and got this error mysql.connector.errors.ProgrammingError: Could not process parameters: str(Data_Tokens), it must be of type list, tuple or dict.

The uniqueTokenSet includes string data type, but as error shows that it must be list, tuple or dict. By converting item to list of tuple [(item)] work for me.

uniqueTokenSet = set()

for item in uniqueTokenSet:
    tokenSql = "insert into tokens(token) values (%s)"
    data = [(item)]
    mycursor.execute(tokenSql, data)

print('data inserted')
mydb.commit()

Answered By: akshay_sushir

MySQL Connector could not process parameters

Question:

Answers: