Error in inserting column in table

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1

Google Photos
Google Photos

I am following a tutorial step by step exactly.

Why is it telling me in the table there is no column with the name chemistry marks when there is?Preformatted text

2

Please do not post text in images:
Why should I not upload images of code/data/errors when asking a question?

Put your code, commands, output, error messages as text between lines with triple backticks:

```
Your text will be here.
```

Now what I noticed in your images:

  • We do not see how you created the table classroom so we cannot say why is the column missing.
  • Do not use format(), f-strings etc. to insert values into SQL commands. These methods create SQL-injection vulnerabilities. If the tutorial does not say that this approach wrong then it is a bad tutorial.
    How to use placeholders to bind values in SQL queries
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