I'm trying to add some data to my database. Code works good without error. But when i'm checking my database i see that there is nothing new. Where is error?
import MySQLdb as mdb
con = #connection settings
cur = con.cursor()
cur.execute("""INSERT INTO myData(id,city,district,testval,
test_date,property_type,price,testvar,title,
description,number_of_tester,number_of_test,
test_age,test_number,number_of_tests,heating,test_type,
applicable,usage_type,test_profile,test,
house_type,latitude,longitude,test_name,test_phones,test_profile,
test_desc,test_title)
VALUES (123456,'Baku','Ahmedli rn','Ahmadli',
'2010-11-10 12:00:00','',1,0,'','','',0,'','','','','','','','','','',0,0,'','','','','')""")
con.close()
Problem Solved, MySQL in Python needs con.commit() at the end to add all this to datebase.
Related
i've been trying to get some data from my db by using below code, but the code is not working. is there any mistake that i made in the code, if so how can i fix it.
NOTE: i took the below code from just a script not a django or flesk web app.
def db():
conn = psycopg2.connect(
"dbname=mydb user=postgres password=****** host=*.*.*.*")
cur = conn.cursor()
cur.execute("""SELECT * FROM MddPublisher""")
query_results = cur.fetchall()
print(query_results)
db()
ERROR: psycopg2.errors.UndefinedTable: relation "mddpublisher" does not exist LINE 1: SELECT * FROM MddPublisher
additionally,i want to show below code to prove that connection is ok. the problem is that i can't receive data from my db whenever i try to execute select command through python.
def print_tables():
conn = psycopg2.connect(
"dbname=mydb user=postgres password=***** host=*.*.*.*.*")
cur = conn.cursor()
cur.execute("""SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public'""")
for table in cur.fetchall():
print(table)
print_tables()
OUTPUT:
('MddPublisher',)
This is probably an issue with case sensitivity. Postgresql names are usually normalized to lower case. However, when used inside double quotes, they keep their case. So, to access a table named MddPublisher you must write it like "MddPublisher".
All the gory details are in Section 4.1.1, Identifiers and Key Words in the Postgresql 14 docs.
I was trying to use the python connector code given in the MySQL documentation and test it on a small database already created, but it aborts. The code is just supposed to connect to the db and add a new email adress.
import mysql.connector
from mysql.connector import errorcode
cnx = mysql.connector.connect(user='root', password='pwd', host='localhost', database='db')
cursor = cnx.cursor()
add_email = ("INSERT INTO employee(MID, Email) VALUES (%s,%s)")
email_details = (NULL, "a#a.de")
cursor.execute(add_email, email_details)
cnx.commit()
input("data entered successfully")
cnx.close()
By setting breakpoints I found out that the problem probably lies in the cursor.execute() statement. (I used Null as the first %s since MID is Auto Incrementing btw)
To solve this problem NULL (for the autoincrementing "MID") needs to be replaced with None.
I have a mysql database that I am currently trying to connect python to. I have successfully created a table with python but when it comes to inserting data in the table my code does not work.
import pymysql
conn = pymysql.connect(
host = Admin.Host,
user = Admin.User,
password= Admin.Password,
db = "thesystem"
)
a = conn.cursor()
sql ="INSERT INTO `a`(`try`) VALUES ('testing')"
a.execute(sql)
I have tried this exact command in the Mysql command Line client and it worked.
INSERT INTO `a`(`try`) VALUES ('testing');
I have also managed to create a table with this same code. I can't figure out why the code runs successfully but does not work.
The resolution is that pymysql requires that you call conn.commit() after making a change. By default, pymysql is not autocommit.
Code example at https://github.com/PyMySQL/PyMySQL says:
. . .
# connection is not autocommit by default. So you must commit to save
# your changes.
connection.commit()
. . .
I'm new to mySQL and Python.
I have code to insert data from Python into mySQL,
conn = MySQLdb.connect(host="localhost", user="root", passwd="kokoblack", db="mydb")
for i in range(0,len(allnames)):
try:
query = "INSERT INTO resumes (applicant, jobtitle, lastworkdate, lastupdate, url) values ("
query = query + "'"+allnames[i]+"'," +"'"+alltitles[i]+"',"+ "'"+alldates[i]+"'," + "'"+allupdates[i]+"'," + "'"+alllinks[i]+"')"
x = conn.cursor()
x.execute(query)
row = x.fetchall()
except:
print "error"
It seems to be working fine, because "error" never appears. Instead, many rows of "1L" appear in my Python shell. However, when I go to MySQL, the "resumes" table in "mydb" remains completely empty.
I have no idea what could be wrong, could it be that I am not connected to MySQL's server properly when I'm viewing the table in MySQL? Help please.
(I only use import MySQLdb, is that enough?)
use commit to commit the changes that you have done
MySQLdb has autocommit off by default, which may be confusing at first
You could do commit like this
conn.commit()
or
conn.autocommit(True) Right after the connection is created with the DB
I am testing Python and Mysql in that i am able to create and delete table's but i am unable to insert data in them.I searched stackoverflow and mostly they suggest to use
commit()
So i used it and even after i used the data is not inserted into the database.Please help me.
This is the code i use it creates the table but not inserting data
import MySQLdb
db = MySQLdb.connect("localhost","user","password")
cxn = MySQLdb.connect(db='test')
cursor = cxn.cursor()
cursor.execute("CREATE TABLE users(name VARCHAR(40),id VARCHAR(40))")
cursor.execute("INSERT INTO users(name,id) VALUES('John','1')")
db.commit()
print "Opertion completed successfully"
Are db and cxn connections to the same database?
You should establish your connection using following:
db = MySQLdb.connect(host="localhost",
db="test",
user="user",
passwd="password")
The cursor should then be derived from this connection via:
cursor = db.cursor()
I would hazard that your issue is coming from the ambiguity between db and cxn.