Question

我正在尝试使用eclipse从postdresql中提取pydev中的代码。对于游戏表，FK列（TeamID和RefereeID）显示为null。他们实际显示其他表中的数据的解决方案是什么？另外，如何将序列更改为90000和90500之间的数字，增量为1？非常感谢！

#!/usr/bin/python
# -*- coding: utf-8 -*-

import psycopg2
import sys
import csv
from itertools import count, cycle
from _tkinter import create
from setuptools.dist import sequence
from email.policy import default
path = r'C:\Users\sammy\Downloads\E0.csv'
with open(path, "r") as csvfile:
    readCSV = csv.reader(csvfile, delimiter=",")
    firstline = 1
    con = None
    con = psycopg2.connect("host='localhost' dbname='football' user='postgres' password='XXX'")   
    cur = con.cursor()
    cur.execute("DROP TABLE games")
    cur.execute("DROP TABLE teams")
    cur.execute("DROP TABLE referees")
    cur.execute("CREATE TABLE teams (HomeTeamID SERIAL PRIMARY KEY, HomeTeam VARCHAR, AwayTeamID VARCHAR, AwayTeam VARCHAR)")
    cur.execute("CREATE TABLE referees (RefereeID SERIAL PRIMARY KEY, RefereeName VARCHAR, AwayTeamID VARCHAR)")
    cur.execute("CREATE TABLE games (GAMEID SERIAL PRIMARY KEY, HomeTeamID INTEGER, FOREIGN KEY (HomeTeamID) REFERENCES teams(HomeTeamID), HomeTeam VARCHAR, AwayTeamID VARCHAR, AwayTeam VARCHAR, FTHG INTEGER, ATHG INTEGER, FTR VARCHAR, RefereeID INTEGER, FOREIGN KEY (RefereeID) REFERENCES referees(RefereeID), RefereeName VARCHAR, HY INTEGER, AY INTEGER)")

    try:
        for row in readCSV:
            if firstline:
                firstline=0
                continue
            HomeTeamID = row[2]
            HomeTeam = row[2]
            AwayTeamID = row[3]
            AwayTeam = row[3]
            FTHG = row[4]
            ATHG = row[5]
            FTR = row[6]
            RefereeID = row[10]
            RefereeName = row[10]
            HY = row[19]
            AY = row[20]

            data1 = (HomeTeam, AwayTeamID, AwayTeam)
            data2 = (RefereeName, AwayTeamID)
            data3 = (HomeTeam, AwayTeamID, AwayTeam, FTHG, ATHG, FTR, RefereeName, HY, AY)
            query1 = "INSERT INTO teams (HomeTeam, AwayTeamID, AwayTeam) VALUES (%s, %s, %s);"
            query2 = "INSERT INTO Referees (RefereeName, AwayTeamID) VALUES (%s, %s);"
            query3 = "INSERT INTO games (HomeTeam, AwayTeamID, AwayTeam, FTHG, ATHG, FTR, RefereeName, HY, AY) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s);"
            print(HomeTeam)
            print(AwayTeam)
            print (FTHG)
            print (ATHG)
            print (FTR)
            print (RefereeID)
            print (RefereeName)
            print (HY)
            print (AY)
            cursor = con.cursor()
            cursor.execute(query1, data1)
            cursor.execute(query2, data2)
            cursor.execute(query3, data3)
    except psycopg2.DatabaseError as e:
        if con:
            con.rollback() 
            print ("Error %s % e", e)
            sys.exit(1) 
    finally:
        if con:
            con.commit()
            con.close()

print(" ".join(row))
out=open("new_data.csv", "w")
output = csv.writer(out)

for row in data1:
    output.writerow(row)

out.close()

eclipse中的pydev外键显示为null

0 个答案: