I'm trying to insert data that's already in one mysql table into another, using python. The column names are the same in each table, and objkey is the distinguishing piece of data I have for the item that I'd like to use to tell mysql which columns to look at.
import MySQLdb
db = MySQLdb.connect(host='', user='', passwd='', db='')
cursor = db.cursor
sql = "INSERT INTO newtable (%s, %s, %s, %s) SELECT %s, %s, %s, %s FROM oldtable
WHERE %s;" % ((name, desig, data, num), name, desig, data, num, obj = repr(objkey))
cursor.execute(sql)
db.commit()
db.close()
It says I have a syntax error, but I'm not sure where since I'm pretty sure there should be parentheses around the field names the first time but not the second one. Anyone know what I'm doing wrong?
I'm not exactly sure what you are trying to do with the obj = repr(objkey) line, but python is thinking you are defining variables with this line, not setting sql syntax (if that is indeed your desire here).
sql = "INSERT INTO newtable (%s, %s, %s, %s) SELECT %s, %s, %s, %s FROM oldtable
WHERE %s;" % ((name, desig, data, num), name, desig, data, num, obj = repr(objkey))
should probably be changed to something like:
sql = "INSERT INTO newtable (%s, %s, %s, %s) SELECT %s, %s, %s, %s FROM oldtable
WHERE obj=%;" % ((name, desig, data, num), name, desig, data, num, repr(objkey))
But even then, you would need objkey defined somewhere as a python variable.
This answer may be way off, but you need to defined what you are expecting to achieve with obj = repr(objkey), in order to get more accurate answers.
Related
I have created a table named 'Patient':
import mysql.connector as mysql
db=mysql.connect(host="localhost", user="root", password="xxxx",
database='project')
cursor = db.cursor()
pat = 'create table Patient(ID char(10) primary key,Token int(10),Name
varchar(20),Phone int(10),Email char(20),Age int(3),BG_needed
char(3),Quantity char(2),Gender char(1),Date date)'
cursor.execute(pat)
sql = 'Insert into
Patient(ID,Token,Name,Phone,Email,Age,BG_needed,Quantity,Gender)
values (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)'
val = ('pat1','2','Aaron','93242995','aArons12#gmail.com','20','B-','3L','M',
'2022-10-01')
cursor.execute(sql, val)
db.commit()
for x in cursor:
print(x)
And I'm getting the output as:
DataError: Column count doesn't match value count at row 1
Can you please help me find the error?
I'm sorry if you think I'm asking a silly question, I'm just in 11th grade, and this topic wasn't taught to us. I'm trying to learn this on my own...
There are too many problems in your script. Your number of parameters don't match.
import mysql.connector as mysql
db = mysql.connect(host="localhost", user="root",
password="xxxx",database='project')
cursor = db.cursor()
pat = 'create table Patient(ID char(10) primary key,Token int(10),Name
varchar(20),Phone int(10),Email char(20),Age int(3),BG_needed
char(3),Quantity char(2),Gender char(1),Date date)'
cursor.execute(pat)
sql = 'Insert into
Patient(ID,Token,Name,Phone,Email,Age,BG_needed,Quantity,Gender,Date)
values (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)'
val = ('pat1','2','Aaron','93242995','aArons12#gmail.com','20','B-
','3L','M','2022-10-01')
cursor.execute(sql, val)
db.commit()
for x in cursor:
print(x)
It was an easy fix. Hope that you find it useful
So I am trying to execute this query but there is definitely a syntax error I have which I wasn't able to figure out.
If someone could help me that would be greatly appreciated. :)
query = """INSERT IGNORE INTO %s(id, title, body_text, username,time_created,num_of_comments, subreddit, full_link, upvote_ratio) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)"""
mycursor.execute(query, (post_table_name, tuple1),)
The current runtime error is
result = self._cmysql.convert_to_mysql(*params) _mysql_connector.MySQLInterfaceError: Python type tuple cannot be converted
Table names and field names cannot use substitution. Assuming you're on Python 3, you can use an 'f' string:
query = f"""INSERT IGNORE INTO {post_table_name} (id, title, body_text, username,time_created,num_of_comments, subreddit, full_link, upvote_ratio) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)"""
mycursor.execute(query, tuple1)
Basically I have some JSON data that I want to put in a MySQL db and to do this I'm trying to get the contents of a dictionary in a cursor.execute method. My code is as follows:
for p in d['aircraft']:
with connection.cursor() as cursor:
print(p['hex'])
sql = "INSERT INTO `aircraft` (`hex`, `squawk`, `flight`, `lat`, `lon`, `nucp`, `seen_pos`, " \
"`altitude`, `vert_rate`, `track`, `speed`, `messages`, `seen`, `rssi`) " \
"VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s )"
cursor.execute(sql, (p['hex'], p['squawk'], p['flight'], p['lat'], p['lon'], p['nucp'], p['seen_pos'], p['altitude'], p['vert_rate'], p['track'], p['speed'], p['messages'], p['seen'], p['rssi']))
print('entered')
connection.commit()
The issue is that any value in the dictionary can be null at any time and I need to find out how to handle this. I've tried to put the code in a try catch block and 'pass' whenever a KeyError exception is raised but this means a record is completely skipped when it has a null value. I've also tried to write a load of if blocks to append a string with the value of the dictionary key but this was pretty useless.
I need to find a way to put a dictionary in my db even if it contains null values.
You can use the dict.get() method, or construct a defaultdict that returns None for missing keys:
import collections
keys = ['hex', 'squawk', 'flight', 'lat', 'lon', 'nucp', 'seen_pos',
'altitude', 'vert_rate', 'track', 'speed', 'messages', 'seen',
'rssi']
for p in d['aircraft']:
with connection.cursor() as cursor:
sql = "INSERT INTO `aircraft` (`hex`, `squawk`, `flight`, `lat`, `lon`, `nucp`, `seen_pos`, " \
"`altitude`, `vert_rate`, `track`, `speed`, `messages`, `seen`, `rssi`) " \
"VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s )"
# Could also use a defaultdict
cursor.execute(sql, tuple(p.get(key) for key in keys))
print('entered')
connection.commit()
For more examples using dict.get(), see this answer: https://stackoverflow.com/a/11041421/1718575
This assumes that SQL will do the right thing when None is provided. If you want to use a string 'NULL', you can supply that as the second argument to dict.get().
I'm trying to insert many rows in MySQL database and for some reason I'm always getting this error.
I have already tried the solutions present in this topic and nothing works.
TypeError: not enough arguments for format string
My Code:
cursor = db.cursor()
row = (date, timetoserve, ipcliente, cacheCode, bytesint, method,\
url.scheme, url.hostname, url.port, url.path, auth, route[0], route[1], contentType)
items.append(row)
if Inputs % 100 == 0:
sql = "INSERT INTO LogTbl \
(DateConnection, TimeToServe, ClientIP, CacheCode, Bytes, Method,\
RequestProtocol, RequestIP, RequestPort, RequestFolder, Auth, RouteLeft, RouteRight, ContentType)\
VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)"
cursor.executemany(sql, items)
items = []
db.commit()
I have a python script to load data to a mysql table problem that I am running into is following:
Warning: Incorrect integer value: 'user_id' for column 'user_id' at row 1
+'VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)',row)
Warning: Invalid TIMESTAMP value in column 'edit_time' at row 1
+'VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)',row)
and this is just a one line of many warning lines, I understand the error and based on my understanding I guess the row is still in the string format or the conversion didn't happen properly. I was thinking to cast each element in the row after I read them from tsv file.
example: int(row[0])
but I am not sure how to cast correctly to match MySQL timestamp type for the relevant timestamp element.
#load training data
def readtsv(file_name, con):
cur = con.cursor()
with open('file.tsv', 'rb') as f:
for row in csv.reader(f, delimiter='\t'):
cur.execute('INSERT INTO mytable(user_id, article_id, revision_id, namespace, edit_time, md5, reverted, reverted_user_id, reverted_revision_id, delta, cur_size)'
+'VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)',row)
try:
con.commit()
except Exception, e:
print 'unable to commit'
print e
Have you checked if your timestamp value is the correct one?
http://dev.mysql.com/doc/refman/5.1/en/datetime.html
if it is so, MySQL will not see the error, thus no warning will exist!
As an hint simply print the insert statement string and try to launch it via "PhpMyAdmin" or other database interface tool.
The TIMESTAMP value, for MySQL is in the format: 'YYYYMMDDHHMMSS', thus today 04 Dec 2012 21:06:00 will be written in this way: '20121204210600' with quotes!