Python finding a specific value in a database
I am creating a web application login page where the user inputs their login information and the app will take their login information, compare it to what is in the database then determine if the login is a registered user. I am starting off by doing a quick test to see if I can get the value from the database, however the problem I am having is that when I input the specific value form the user input that I want it to find, I keep getting an error stating that the value needs to be a specific parameter, row or tuple. I am using an sql server
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
try:
connect = pypyodbc.connect('Driver={SQL server};Server=localhost;Database=capstone;uid=;pwd=')
cursor = connect.cursor()
_username = str(request.form['username'])
cursor.execute("SELECT * FROM login WHERE username= (%s)", _username)
dataUser = cursor.fetchone()[1]
return(dataUser)
except Exception as e:
return (str(e))
python
sql-server database web-applications asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
add a comment |
I am creating a web application login page where the user inputs their login information and the app will take their login information, compare it to what is in the database then determine if the login is a registered user. I am starting off by doing a quick test to see if I can get the value from the database, however the problem I am having is that when I input the specific value form the user input that I want it to find, I keep getting an error stating that the value needs to be a specific parameter, row or tuple. I am using an sql server
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
try:
connect = pypyodbc.connect('Driver={SQL server};Server=localhost;Database=capstone;uid=;pwd=')
cursor = connect.cursor()
_username = str(request.form['username'])
cursor.execute("SELECT * FROM login WHERE username= (%s)", _username)
dataUser = cursor.fetchone()[1]
return(dataUser)
except Exception as e:
return (str(e))
python
sql-server database web-applications asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
1
You are testing with an SQL wildcard in the where condition. Use ? as a parameter marker instead of %s.
– Benjámin Budai
Nov 22 '18 at 22:48
I have tried with ? and it still wouldn't work
– Abbadon771
Nov 23 '18 at 7:24
1
Are you sure _username is not None?
– Benjámin Budai
Nov 23 '18 at 21:24
add a comment |
I am creating a web application login page where the user inputs their login information and the app will take their login information, compare it to what is in the database then determine if the login is a registered user. I am starting off by doing a quick test to see if I can get the value from the database, however the problem I am having is that when I input the specific value form the user input that I want it to find, I keep getting an error stating that the value needs to be a specific parameter, row or tuple. I am using an sql server
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
try:
connect = pypyodbc.connect('Driver={SQL server};Server=localhost;Database=capstone;uid=;pwd=')
cursor = connect.cursor()
_username = str(request.form['username'])
cursor.execute("SELECT * FROM login WHERE username= (%s)", _username)
dataUser = cursor.fetchone()[1]
return(dataUser)
except Exception as e:
return (str(e))
python
sql-server database web-applications asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
I am creating a web application login page where the user inputs their login information and the app will take their login information, compare it to what is in the database then determine if the login is a registered user. I am starting off by doing a quick test to see if I can get the value from the database, however the problem I am having is that when I input the specific value form the user input that I want it to find, I keep getting an error stating that the value needs to be a specific parameter, row or tuple. I am using an sql server
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
try:
connect = pypyodbc.connect('Driver={SQL server};Server=localhost;Database=capstone;uid=;pwd=')
cursor = connect.cursor()
_username = str(request.form['username'])
cursor.execute("SELECT * FROM login WHERE username= (%s)", _username)
dataUser = cursor.fetchone()[1]
return(dataUser)
except Exception as e:
return (str(e))
python
sql-server database web-applications python
sql-server database web-applications asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
asked Nov 22 '18 at 22:30
Abbadon771Abbadon771
63
63
1
You are testing with an SQL wildcard in the where condition. Use ? as a parameter marker instead of %s.
– Benjámin Budai
Nov 22 '18 at 22:48
I have tried with ? and it still wouldn't work
– Abbadon771
Nov 23 '18 at 7:24
1
Are you sure _username is not None?
– Benjámin Budai
Nov 23 '18 at 21:24
add a comment |
1
You are testing with an SQL wildcard in the where condition. Use ? as a parameter marker instead of %s.
– Benjámin Budai
Nov 22 '18 at 22:48
I have tried with ? and it still wouldn't work
– Abbadon771
Nov 23 '18 at 7:24
1
Are you sure _username is not None?
– Benjámin Budai
Nov 23 '18 at 21:24
1
1
You are testing with an SQL wildcard in the where condition. Use ? as a parameter marker instead of %s.
– Benjámin Budai
Nov 22 '18 at 22:48
You are testing with an SQL wildcard in the where condition. Use ? as a parameter marker instead of %s.
– Benjámin Budai
Nov 22 '18 at 22:48
I have tried with ? and it still wouldn't work
– Abbadon771
Nov 23 '18 at 7:24
I have tried with ? and it still wouldn't work
– Abbadon771
Nov 23 '18 at 7:24
1
1
Are you sure _username is not None?
– Benjámin Budai
Nov 23 '18 at 21:24
Are you sure _username is not None?
– Benjámin Budai
Nov 23 '18 at 21:24
add a comment |
1 Answer
1
active
oldest
votes
There's a couple ways you can do this:
# using dictionary
values = {'username': _username, }
cursor.execute("SELECT * FROM login WHERE username=:username", values)
#using tuple:
values = (_username,)
cursor.execute("SELECT * FROM login WHERE username=? ", values)
# Using fetchone will return the object and not an array.
# No need for [1] in 'cursor.fetchone()[1]'
return cursor.fetchone()
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
There's a couple ways you can do this:
# using dictionary
values = {'username': _username, }
cursor.execute("SELECT * FROM login WHERE username=:username", values)
#using tuple:
values = (_username,)
cursor.execute("SELECT * FROM login WHERE username=? ", values)
# Using fetchone will return the object and not an array.
# No need for [1] in 'cursor.fetchone()[1]'
return cursor.fetchone()
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
add a comment |
There's a couple ways you can do this:
# using dictionary
values = {'username': _username, }
cursor.execute("SELECT * FROM login WHERE username=:username", values)
#using tuple:
values = (_username,)
cursor.execute("SELECT * FROM login WHERE username=? ", values)
# Using fetchone will return the object and not an array.
# No need for [1] in 'cursor.fetchone()[1]'
return cursor.fetchone()
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
add a comment |
There's a couple ways you can do this:
# using dictionary
values = {'username': _username, }
cursor.execute("SELECT * FROM login WHERE username=:username", values)
#using tuple:
values = (_username,)
cursor.execute("SELECT * FROM login WHERE username=? ", values)
# Using fetchone will return the object and not an array.
# No need for [1] in 'cursor.fetchone()[1]'
return cursor.fetchone()
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
There's a couple ways you can do this:
# using dictionary
values = {'username': _username, }
cursor.execute("SELECT * FROM login WHERE username=:username", values)
#using tuple:
values = (_username,)
cursor.execute("SELECT * FROM login WHERE username=? ", values)
# Using fetchone will return the object and not an array.
# No need for [1] in 'cursor.fetchone()[1]'
return cursor.fetchone()
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
edited Nov 23 '18 at 21:27
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
answered Nov 22 '18 at 23:47
Marcelo FonsecaMarcelo Fonseca
598
598
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
add a comment |
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
neither of these options work, I still get this message: Params must be in a list, tuple, or Row. It is weird because I try cursor.execute("SELECT * FROM login WHERE username='admin89'") and it does return the password
– Abbadon771
Nov 23 '18 at 19:31
add a comment |
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1
You are testing with an SQL wildcard in the where condition. Use ? as a parameter marker instead of %s.
– Benjámin Budai
Nov 22 '18 at 22:48
I have tried with ? and it still wouldn't work
– Abbadon771
Nov 23 '18 at 7:24
1
Are you sure _username is not None?
– Benjámin Budai
Nov 23 '18 at 21:24