如何在Python中使用列名檢索SQL結果列值？

Question

有沒有辦法在Python中使用列名而不是列索引檢索SQL結果列值？我用mySQL使用Python 3。我在尋找的語法是非常像Java結構：

Object id = rs.get("CUSTOMER_ID"); 

我有一個表，相當數量的列，它是一個真正的痛苦不斷制定出每列，我需要索引訪問。此外，索引使我的代碼難以閱讀。

謝謝！

Answer 1

的MySQLdb模塊具有DictCursor：

使用這樣的（從Writing MySQL Scripts with Python DB-API拍攝）：

cursor = conn.cursor(MySQLdb.cursors.DictCursor) 
cursor.execute("SELECT name, category FROM animal") 
result_set = cursor.fetchall() 
for row in result_set: 
    print "%s, %s" % (row["name"], row["category"]) 

編輯：根據user1305650這也適用於pymysql。

Answer 2

當然有。在Python 2.7.2 + ...

import MySQLdb as mdb 
con = mdb.connect('localhost', 'user', 'password', 'db'); 
cur = con.cursor() 
cur.execute('SELECT Foo, Bar FROM Table') 
for i in range(int(cur.numrows)): 
    foo, bar = cur.fetchone() 
    print 'foo = %s' % foo 
    print 'bar = %s' % bar 

Answer 3

您沒有提供很多細節，但你可以嘗試這樣的事：

# conn is an ODBC connection to the DB 
dbCursor = conn.cursor() 
sql = ('select field1, field2 from table') 
dbCursor = conn.cursor() 
dbCursor.execute(sql) 
for row in dbCursor: 
    # Now you should be able to access the fields as properties of "row" 
    myVar1 = row.field1 
    myVar2 = row.field2 
conn.close() 

Answer 4

蟒蛇2.7

import pymysql 

conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='password', db='sakila') 

cur = conn.cursor() 

n = cur.execute('select * from actor') 
c = cur.fetchall() 

for i in c: 
    print i[1] 

Answer 5

這個職位是舊的，但可能出現通過搜索。

現在你可以使用mysql.connector以檢索字典如下所示： https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlcursordict.html

這裏是在MySQL網站的例子：

cnx = mysql.connector.connect(database='world') 
cursor = cnx.cursor(dictionary=True) 
cursor.execute("SELECT * FROM country WHERE Continent = 'Europe'") 

print("Countries in Europe:") 
for row in cursor: 
    print("* {Name}".format(Name=row['Name'] 

Answer 6

進口pymysql

# Open database connection 
db = pymysql.connect("localhost","root","","gkdemo1") 

# prepare a cursor object using cursor() method 
cursor = db.cursor() 

# execute SQL query using execute() method. 
cursor.execute("SELECT * from user") 

# Get the fields name (only once!) 
field_name = [field[0] for field in cursor.description] 

# Fetch a single row using fetchone() method. 
values = cursor.fetchone() 

# create the row dictionary to be able to call row['login'] 
**row = dict(zip(field_name, values))** 

# print the dictionary 
print(row) 

# print specific field 
print(**row['login']**) 

# print all field 
for key in row: 
    print(**key," = ",row[key]**) 

# close database connection 
db.close()