I have a script that asks for input, and that input is then inserted into a table. The next time the script is run, I'd like for it to tell the user what id the last input has.
The table looks like: id INTEGER PRIMARY KEY AUTOINCREMENT, userid TEXT, domain TEXT, password TEXT, webserver TEXT, sqlserver TEXT
I was told I could use SELECT seq from SQLITE_SEQUENCE WHERE name='table_name' but it yields the following text: instead of the id from the last row.
Please note that I'm an extremely new Python / SQLite3 coder!
For your reference, the code sofar looks like this:
#!/usr/bin/python
import os, sys, sqlite3
######## CHECK SYSTEM COMPATIBILITY ########
if os.name =='posix':
os.system("clear")#CLEAR SCREEN#
pass
else:
sys.exit("Operating System is not supported")
######## END CHECK SYSTEM COMPATIBILITY ########
######## CHECK IF SCRIPT IS RUN AS ROOT ########
#if os.geteuid() != 0:
# sys.exit("Script must be run as root")
#else:
# pass
####### END CHECK IF SCRIPT IS RUN AS ROOT ########
####### CREATE DATABASE AND CHECK IF TABLE EXISTS ##########
conn = sqlite3.connect("dat.db")
c = conn.cursor()
c.execute ('''CREATE TABLE IF NOT EXISTS kunder
(id INTEGER PRIMARY KEY AUTOINCREMENT, userid TEXT, domain TEXT, password TEXT, webserver TEXT, sqlserver TEXT)''')
conn.commit()
print c.execute ("SELECT seq from SQLITE_SEQUENCE WHERE name='kunder'")
conn.close()
######## DONE CREATE DATABASE AND CHECK IF TABLE EXISTS #########
###### ASK FOR INPUT ##########
########### HERE NEEDS TO BE A CHECK TO DETERMINE THE LATEST USERID - ALSO NEEDS TO BE FOR WEBSERVER AND PASSWORD #################
userid = raw_input("Enter userid: ")
########### HERE NEEDS TO BE A CHECK TO SEE IF USERID EXISTS!!!!!#####################
domain = raw_input("Enter domain: ")
password = raw_input("Enter password: ")
########### NEEDS TO BE A WAY TO AUTOGENERATE A PASSWORD!!! ####################
webserver = raw_input("Enter webserver: ")
sqlserver = raw_input("Enter sqlserver: ")
###### FINISHED ASK FOR INPUT #######
######## DATABASE ###########
conn = sqlite3.connect("dat.db")
c = conn.cursor()
c.execute ("INSERT INTO kunder (userid, domain, password, webserver, sqlserver) VALUES (?,?,?,?,?)", (userid, domain, password, webserver, sqlserver))
conn.commit()
conn.close()
####### DONE WITH DATABASE ##########
The SQL statement SELECT max(id) FROM table_name
should give you the maximum id. If you're auto-incrementing then this would be the same as the last inserted.
Edit: To get the actual value in python means reading it from the cursor:
cursor = sqlite3.execute('SELECT max(id) FROM table_name')
max_id = cursor.fetchone()[0]
fetchone()
returns the first row from the select statement as a tuple (unless a row_factory is used), so fetchone()[0]
will, in this case, return the first (and only) column in the first (and only) row, ie the max(id).
See http://docs.python.org/2/library/sqlite3.html for more info.
尝试使用sqlite3_last_insert_rowid()
import sqlite3
data_person_name = [('Michael', 'Fox'),
('Adam', 'Miller'),
('Andrew', 'Peck'),
('James', 'Shroyer'),
('Eric', 'Burger')]
con = sqlite3.connect(":memory:")
c = con.cursor()
c.execute('''CREATE TABLE q1_person_name
(name_id INTEGER PRIMARY KEY,
first_name varchar(20) NOT NULL,
last_name varchar(20) NOT NULL)''')
for data_person in data_person_name:
c.execute('INSERT INTO q1_person_name(first_name, last_name) VALUES (?,?)', data_person)
# get the last rowid inserted
last_name_id = c.lastrowid
print(last_name_id)
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