如何使用Python将数据插入SQLite3数据库？

Question

我需要使用Python将数据插入SQLite3数据库。 我已经编写了查询，但是没有按预期工作。 我的代码如下。

conn = sqlite3.connect("db.sqlite3")
cursor = conn.cursor()
location_name = request.POST.get('lname')
rname = request.POST.get('rname')
seat = request.POST.get('seat')
projector = request.POST.get('projector')
video = request.POST.get('video')
location_name = location_name[0:255]
rname = rname[0:255]
seat = seat[0:10]
from_date = request.POST.get('from_date')
to_date = request.POST.get('from_date')
current_datetime = datetime.datetime.now()
now = current_datetime.strftime("%Y-%m-%d %H:%M")
cursor.execute("INSERT INTO booking_meeting (room_name,from_date,to_date,no_seat,projector,video,created_date,location_name) \ VALUES (rname, from_date, to_date, seat, projector, video, now, location_name  )")

conn.commit()

在这里，我给出了动态值，并且没有数据插入到表中。

Answer 1

您需要将变量的值放入SQL语句中。 最安全的方法是执行以下操作

cursor.execute("INSERT INTO booking_meeting (room_name,from_date,to_date,no_seat,projector,video,created_date,location_name) VALUES (?, ?, ?, ?, ?, ?, ?, ?)", (rname, from_date, to_date, seat, projector, video, now, location_name ))

请注意，变量作为元组传递，以便它们的值可以在SQL语句中使用。

Answer 2

除了@ Code-Apprentice：

您可以使用executemany插入许多值：

cursor.executemany(
  "INSERT INTO booking_meeting (room_name,from_date,to_date,no_seat,projector,video,created_date,location_name) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
  [
    (rname1, from_date1, to_date1, seat1, projector1, video1, now1, location_name1),
    (rname2, from_date2, to_date2, seat2, projector2, video2, now2, location_name2)
  ]
)

继续阅读