Solved

Sqlite3 table, insert values from python dictionary

Posted on 2014-01-21
2
1,918 Views
Last Modified: 2014-01-22
I have created the following sqlite3 database table from python:

sqlite> .schema my_table
CREATE TABLE my_table ( myID INTEGER PRIMARY KEY NOT NULL,            
                       Dtg TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,            
                       Date VARCHAR(40),            
                       Holiday VARCHAR(128),            
                       Service VARCHAR(20),            
                       Sign_Up VARCHAR(40),            
                       Last_Name VARCHAR(128),            
                       First_Name VARCHAR(128),            
                       Phone VARCHAR(40),            
                       Email VARCHAR(128));

Open in new window


but I cannot insert values into the table.  Here is my commented code:

layMin = {'myID':'','Dtg':'', 'Date':'2014-02-18', 'Holiday':'', 'Service':'0:900 AM',\
          'Sign_Up':'Eucharistic Minister', 'Last_Name':'Voyage', \
          'First_Name':'Maiden', 'Phone':'444-5555', 'Email':'maiden@voyage.com' }


sql_insert = ("INSERT into my_table(myID,Dtg,Date,Holiday,Service,Sign_Up,\
Last_Name,First_Name,Phone,Email) VALUES(layMin['myID'],layMin['Dtg'],\
layMin['Date'],layMin['Holiday'],layMin['Service'],layMin['Sign_Up'],\
layMin['Last_Name'],layMin['First_Name'],layMin['Phone'],layMin['Email']);")
    
try:
     con = lite.connect(db_path)
     cursor = con.cursor()  # I can open the database
     cursor.execute(sql_insert) # but this fails
     con.commit()
     con.close()   

except lite.Error, e:

    print "Error could not connect to database"; #this is the response
    sys.exit(1) 

Open in new window


 I've had no trouble inserting the same records into a mysql database, but my new host doesn't have that application.  Help.
0
Comment
Question by:sara_bellum
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 17

Accepted Solution

by:
gelonida earned 500 total points
ID: 39799322
I would add a print statement in line 10
print sql_insert

if you have the command line version of sqlite3 (exists under linux and windows) you could try to copy and paste the line into sqlite3 ind you should easier see the error.


In your particular case the escaping and replacement is quite wrong.
I'm rather sure the same line will also not work ander mysql.

sql_insert = "INSERT into my_table(myID),  VALUES(%s)" % layMin['myID']

would probably work better though this would be prone to sql injection.

If I remember, the way to avoid sql injection with sqlite is

sql_insert = "INSERT into my_table(myID),  VALUES(?)"

sql_values = (layMin['myID'], )

cursor.execute(sql_insert, sql_values)
0
 

Author Comment

by:sara_bellum
ID: 39801464
Thanks Gelonida, I had forgotten to paste my commands at the sqlite> prompt to yield syntax errors.  I tried many, and ran out of patience with dictionary values so I reverted to working with a list. I post this in case it's useful to someone:

cursor.execute('insert into table_name (field3, field4, field5...field10) values  (?,?,?,?,?,?,?,?)', value_list)

Open in new window


One should not include blank fields in the value list to account for autoincrement or sql timestamps since those are generated by sqlite.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When we want to run, execute or repeat a statement multiple times, a loop is necessary. This article covers the two types of loops in Python: the while loop and the for loop.
These days, all we hear about hacktivists took down so and so websites and retrieved thousands of user’s data. One of the techniques to get unauthorized access to database is by performing SQL injection. This article is quite lengthy which gives bas…
Learn the basics of if, else, and elif statements in Python 2.7. Use "if" statements to test a specified condition.: The structure of an if statement is as follows: (CODE) Use "else" statements to allow the execution of an alternative, if the …
Learn the basics of modules and packages in Python. Every Python file is a module, ending in the suffix: .py: Modules are a collection of functions and variables.: Packages are a collection of modules.: Module functions and variables are accessed us…

695 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question