I want to insert data in MYSQL database using python
here my code
import MySQLdb
#connect to db
db= MySQLdb.connect(host= "localhost",
user="root",
passwd="newpassword",
db="new_schema")
#setup cursor
cursor = db.cursor()
#create anooog1 table
cursor.execute("DROP TABLE IF EXISTS try")
sql = """CREATE TABLE try (
COL1 INT, COL2 INT )"""
cursor.execute(sql)
#insert to table
cursor.execute("""INSERT INTO try VALUES (%s,%s)""",(188,90))
db.commit()
db.rollback()
#show table
cursor.execute("""SELECT * FROM try""")
print cursor.fetchall()
db.close()
but the error is in my sql
Error: `new_schema`.`try`: table data is not editable because there is no primary key defined for the table ...
What shall I do?
Your error is because you've created a table with no primary key.
Use this statement (or similar):
sql = """CREATE TABLE try (COL1 INT, COL2 INT, PRIMARY KEY (COL1))"""
Here we specify that COL1 is to be the primary key for the table. Modify as you need to suit your requirements.
If you wanted to add a string column (with length 128) to your table:
CREATE TABLE try (COL1 INT, COL2 INT, MyString VARCHAR(128), PRIMARY KEY (COL1))
Related
I'm using entries to insert data points into a table where the 'ID' is auto-incrementing. I'm encountering an issue I had when I was working on importing a table with the id being based on auto incrementing, but the solutions I got for that haven't worked with this so far.
import tkinter as tk
import sqlite3
c.execute("""CREATE TABLE IF NOT EXISTS tbl (
id INTEGER PRIMARY KEY NOT NULL,
data text
)""")
def add_equipment():
conn = sqlite3.connect('database.db')
c = conn.cursor()
c.execute("INSERT INTO tbl VALUES(:ID + null, :data)
{"data":data_ent.get()
})
conn.commit()
conn.close()
Doing this gives me an error of did not supply value for binding parameter id, removing the ':id + null' gives me an error of 1 column doens't have a supplied value. I used a for loop on the import version of this, but when I tried to do a loop as:
for row in c.fetchall():
c.execute('variable for the insert command & data', row)
it gives me no error, but doesn't insert the data into the table. I assume the for loop is wrong, but I'm not sure what it should be since this is meant to insert a single record at a time.
def add_equipment():
conn = sqlite3.connect('database.db')
c = conn.cursor()
c.execute("INSERT INTO tbl VALUES(:ID + null, :data)
{"id":'NULL',
"data":data_ent.get()
})
conn.commit()
conn.close()
This gives id a binding parameter and allows the null to auto increment as supposed to.
I've search trought a lot a internet site and I cannot find the answer.
I try to create 4 tables in my SQLite database with this code:
try:
conn = sqlite3.connect(os.path.join(current_directory, 'fidouda.db'))
c = conn.cursor()
c.execute('''CREATE TABLE Clients (ID INTEGER PRIMARY KEY AUTOINCREMENT, Prenom, Nom, Adresse, Email, Telephone, Genre, Factures, Fidelite);''')
c.execute('''CREATE TABLE Factures (ID, Client, Items, Date, Prix, Promotion, Sous-total, Total, Payer, Rpayer);''')
c.execute('''CREATE TABLE Inventaire (Stock, Nom, Prix);''')
c.execute('''CREATE TABLE Rabais (Nom, Pourcentage);''')
except Error as e:
print(e)
finally:
if conn:
conn.close()
return os.path.join(current_directory, fname)
The problem is that only the first table are created. How can I create all my table ?
If you run this code, it will output this error:
sqlite3.OperationalError: near "-": syntax error
Specifically, the hyphen in the column Sous-total, you can either surround the column name in quotes, like this:
c.execute('''CREATE TABLE Factures (ID, Client, Items, Date, Prix, Promotion, 'Sous-total', Total, Payer, Rpayer);''')
Or pick another column name that won't cause problems.
I got stuck when I was trying to create database in Python using sqlite3. The below is what I did. When I tried to run, it kept telling me the tables already exist. I couldn't figure out why. Thanks!
import sqlite3
variables = (data)
functions = (data)
var_func = (data)
conn = sqlite3.connect('python_database')
c = conn.cursor()
#create table
c.execute(''' CREATE table variable_table (
id integer,
name text,
module text,
type text,
desc text) ''')
c.execute(''' CREATE table function_table (
id integer,
name text) ''')
c.execute(''' CREATE table var_func_table (
variable_id integer,
function_id integer,
type text) ''')
#fill tables with data
for row in variables:
c.execute ('insert into variable_table values (?,?,?,?,?)', row )
for row in functions:
c.execute ('insert into function_table values (?,?)', row)
for row in var_func:
c.execute ('insert into var_func_table values (?,?,?)', row)
# Save (commit) the change
conn.commit
conn.close
I`m just started to learn SQLite. I use python.
The question is how to create rows in tables, so that they are uniqe by name and how to use (extract) id1 and id2 to insert them into a separate table.
import sqlite3
conn = sqlite3.connect('my.db')
c = conn.cursor()
c.execute('''CREATE TABLE IF NOT EXISTS table1(
id1 integer primary key autoincrement, name)''')
c.execute('''CREATE TABLE IF NOT EXISTS table2(
id2 integer primary key autoincrement, name)''')
c.execute('CREATE TABLE IF NOT EXISTS t1_t2(id1, id2)') # many-to-many
conn.commit()
conn.close()
conn = sqlite3.connect('my.db')
c = conn.cursor()
c.execute('INSERT INTO table1 VALUES (null, "Sue Monk Kidd")')
c.execute('INSERT INTO table2 VALUES (null, "The Invention of Wings")')
#c.execute('INSERT INTO t1_t2 VALUES (id1, id2)')
c.execute('INSERT INTO table1 VALUES (null, "Colleen Hoover")')
c.execute('INSERT INTO table2 VALUES (null, "Maybe Someday")')
#c.execute('INSERT INTO t1_t2 VALUES (id1, id2)')
Thanks.
I think you have some problems with the table creation. I doubt that it worked, because the name columns don't have a type. They should probably be varchar of some length. The JOIN table definition isn't right, either.
CREATE TABLE IF NOT EXISTS table1 (
id1 integer primary key autoincrement,
name varchar(80)
);
CREATE TABLE IF NOT EXISTS table2 (
id2 integer primary key autoincrement,
name varchar(80)
);
CREATE TABLE IF NOT EXISTS t1_t2 (
id1 integer,
id2 integer,
primary key(id1, id2),
foreign key(id1) references table1(id1),
foreign key(id2) references table2(id2)
);
I would not create the tables in code. Script them, execute in the SQLite admin, and have the tables ready to go when your Python app runs.
I would think much harder about your table names if these are more than examples.
I found the problem of unique names on unique column problem.
Actually, I should change INSERT to INSERT OR IGNORE
import sqlite3
conn = sqlite3.connect('my.db')
c = conn.cursor()
c.execute('''CREATE TABLE IF NOT EXISTS table1(
id1 integer primary key autoincrement, name TEXT unique)''')
c.execute('''CREATE TABLE IF NOT EXISTS table2(
id2 integer primary key autoincrement, name TEXT unique)''')
c.execute('CREATE TABLE IF NOT EXISTS t1_t2(id1, id2)') # many-to-many
conn.commit()
conn.close()
conn = sqlite3.connect('my.db')
c = conn.cursor()
c.execute('INSERT OR IGNORE INTO table1 VALUES (null, "Sue Monk Kidd")')
c.execute('INSERT OR IGNORE INTO table2 VALUES (null, "The Invention of Wings")')
I have a MySQL Table named TBLTEST with two columns ID and qSQL. Each qSQL has SQL queries in it.
I have another table FACTRESTTBL.
There are 10 rows in the table TBLTEST.
For example, On TBLTEST lets take id =4 and qSQL ="select id, city, state from ABC".
How can I insert into the FACTRESTTBL from TBLTEST using python, may be using dictionary?
Thx!
You can use MySQLdb for Python.
Sample code (you'll need to debug it as I have no way of running it here):
#!/usr/bin/python
import MySQLdb
# Open database connection
db = MySQLdb.connect("localhost","testuser","test123","TESTDB" )
# prepare a cursor object using cursor() method
cursor = db.cursor()
# Select qSQL with id=4.
cursor.execute("SELECT qSQL FROM TBLTEST WHERE id = 4")
# Fetch a single row using fetchone() method.
results = cursor.fetchone()
qSQL = results[0]
cursor.execute(qSQL)
# Fetch all the rows in a list of lists.
qSQLresults = cursor.fetchall()
for row in qSQLresults:
id = row[0]
city = row[1]
#SQL query to INSERT a record into the table FACTRESTTBL.
cursor.execute('''INSERT into FACTRESTTBL (id, city)
values (%s, %s)''',
(id, city))
# Commit your changes in the database
db.commit()
# disconnect from server
db.close()