使用 python 检查数据库中是否存在某个数字并将变量加 1

Question

我正在尝试使用 python.

检查数据库中是否存在某个数字

当它检测到我要查找的号码时，我希望它执行 variable += 1。我没有任何特定的代码，但这里有一些我想要它做的示例代码。

import pyodbc 

one = 0

conn = pyodbc.connect(r'DSN=MACCD')
cursor = conn.cursor()
cursor.execute('SELECT first,second,third,fourth,fifth FROM ExampDatabase')

if "1 is detected in the database":
    one += 1
print(one)

Answer 1

正在阅读 pyodbc docs，您可以试试这个：

import pyodbc 

conn = pyodbc.connect(...)
cursor = conn.cursor()
cursor.execute(...)

# whatever number you are looking for
my_target = ...
target_counter = 0

row_counter = 0
while True:
    row = cursor.fetchone()
    if row is None:
        break

    row_counter += 1
    print(row_counter, row)

    if my_target in row:
        target_counter += 1

print('rows returned:', row_counter)
print('targets found:', target_counter)

使用 python 检查数据库中是否存在某个数字并将变量加 1

Check if a certain number exists in a database using python and add 1 to a variable

python

database

variables

if-statement

increment