625 questions
For example, there is a posts table and a users table, and there is a likes table and a bookmarks table. Both likes and bookmarks have FK keys of the top table posts and usersIf you leave only one lik...
The code was slightly modified and executed.The table exportimport201006 is in the created state.I'm trying to put a value in this table, but the following error appears.How do we solve this?
When designing the db, I want to insert the Python code in blob type. I have a lot on my mind.I'm worried if this is efficient. Is it right to put it in considering translation and integrity?Or is it ...
The values of the table named Student currently in PostgreSQL (DB) using flasqlAlchemy in Python.session.They're calling me query.When a value is called, the table name and attribute name are grouped ...
Hello, I'm a Php beginner.Using PHP Data Object, if there is a user with a specific name in the user table, I want to print out that the user is present or not, so I want to print out a message that t...
import pandas as pd import openpyxl import pymysql NP0 = pd.read_excel('c:/Temp/ChangeNP.xlsx', sheet_name = str(2011)+str(1)+'Q') Code=NP0.iloc[5:,0] Name=NP0.iloc[5:,1] for index in range(1,34): yea...
DB is using mysql but I'm a beginner at SQL so I don't know how to organize the query.First of all, there are three tables.useruid | int thingcid | intuid | intcontent | varcharmarkmid | intcid | intu...
There is a point of blockage while working with mysql. Our company's DB status is... There are dozens of the same data in a field in the table.What I want to do is to specify and update only one data ...
Let's say there's a data frame like thisHow do I extract more than one value from the column Alphabet?(c, d, e have only one value, so include X)
In the IT development process of the six-month state-funded course Today, we've started a new journey with a book called Oracle SQL and PL/SQL, which are easy to learn with a variety of examples.There...
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