I encountered a problem when I used flask_sqlalchemy for the first time, as follows uses python version 3.6 , uses conda as the package manager, and has successfully installed flask_sqlalchemy and other related dependent packages. the simpl...
golang time.Time type and sqlite3 text type or integer type can t be automatically converted when the Scan () method is called? if not, what is the best practice for storing time type fields, and are there inevitably intermediate fields or ma...
Why can mysql save time with varchar and still make time comparisons? What is the principle? Y-m-d H:i:s like this ...
the environment I use is go version go1.11.1 windows amd64 xorm + Sqlite3 I am using type User struct { Id int `json:"id" xorm:"pk autoincr unique(UNIQUE) INT(10) notnull"` Name string `json:"name" xorm...
if the Python+SQLite3 record does not exist, insert it and ignore it if it exists. ...
there are two tables in the SQLite3 database Table 1 A B C D 1 a ww.ok;ww.ant; anything 2 e ww.kdi; ihy 3 se ww.sdd; sld 4 sd ww.akd; sdjfa Table 2 A B C D 1 ...
this module is used to authenticate users from django.contrib.auth import authenticate A few days ago, you can use user = authenticate (username=username, password=password) to return a user, but today you try to return None . the following proble...
sqlite3 error message in Python: the code is as follows: df = pandas.DataFrame(newsdetail) df.to_excel( news1.xls ) import sqlite3 with sqlite3.connect( news.sqlite ) as db: df.to_sql( news ,con = db) df2 = pandas.read_sql_query( SEL...
has recently done a vue project-video upload function. requirements goes like this: when the user opens the page, there will be a button to turn on the camera. When the user clicks the button, the mobile camera will be turned on to take pictures of t...
I use vue-router to do two routes, one is the home page, the other page, and then use header to switch routes and do sibling component communication, but found that header can only trigger the home page listeners, when switching routes can not trigger ot...
suppose there is an array object like this var qq = [ { "group": 100, "info": {"event": 123}, "name": "paul", }, { "group": 100, "info": {"event&quo...
After nuxt is released statically, it is OK to access it as a root path, such as http: 192.168.1.2. If you deploy multiple projects, consider adding context, http: 192.168.1.2 one, and then you will find that some resources cannot be loaded. ...
report an error directly with npm run dev "dev": "export NODE_ENV=devServer&& webpack-dev-server --config . aa.js the error is reported directly but there is no problem with packing with webpack. Could you tell me how to solve...