When i execute below program
import MySQLdb
cn = MySQLdb.connect(host="localhost", user="root", passwd="mysqlroot",
db="sv_data")
cursor = cn.cursor()
cursor.execute("select addressline1, zipcode from sv_address where zipcode = '10011'")
for (addressline1, zipcode) in cursor:
print(addressline1, zipcode)
cursor.close()
cn.close()
it works fine. However when i try to add a parameter in query, like below
import MySQLdb
cn = MySQLdb.connect(host="localhost", user="root", passwd="****",
db="sv_data")
cursor = cn.cursor()
a="10011"
cursor.execute("select addressline1, zipcode from sv_address where zipcode =
%s", (a))
for (addressline1, zipcode) in cursor:
print(addressline1, zipcode)
cursor.close()
cn.close()
getting error ProgrammingError: not all arguments converted during string formatting
can you please advise how to fix this. I tried various options. zipcode is varchar field in mysqldb
You are not passing the argument. you are rather giving it a string.
Try this.
cursor.execute("select addressline1, zipcode from sv_address where zipcode = %s" % a )
The best way to do is to separate your arguments and sql_query
_sql = "select addressline1, zipcode from sv_address where zipcode = {0}"
cursor.execute(_sql.format(a))
I believe the issue is that cursor
is reading (a)
as just a string and sees multiple values in it that aren't being converted( 1, 0, 0, 1, 1
). So if you add a comma like so:
cursor.execute("select addressline1, zipcode from sv_address where zipcode = %s", (a,))
I believe that will work properly.
For instance, look at this function and the outcome:
In [28]: def t(arg):
...: print(type(arg))
...:
In [29]: t(('a'))
<class 'str'>
The argument isn't being read as a tuple, it's being read as a string.
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