Pawandeep Kaur has Published 35 Answers

How can you order the result obtained by select query in MySQL?

Pawandeep Kaur

Pawandeep Kaur

Updated on 10-Jun-2021 12:26:46

It is common to select certain data or rows from a table. The rows are returned in the order in which they appear in the table. We may sometimes require that the rows we select from the table must be returned to us in ascending or descending order with respect ... Read More

How can you select data from a table based on some criteria using MySQL in Python?

Pawandeep Kaur

Pawandeep Kaur

Updated on 10-Jun-2021 12:18:26

It is not frequently required to select all the data from the table. Instead , we need to select data or rows from the table based on some condition or criteria.Suppose, we have a table which includes names and marks of many students. Now, we need to get names of ... Read More

What is SQL injection? How can you prevent it?

Pawandeep Kaur

Pawandeep Kaur

Updated on 10-Jun-2021 12:18:10

SQL injection is a web hacking technique. It is the code injection technique which inserts malicious code into your database and destroys the database. This is the insertion of malicious code via web page input.The main cause of SQL injection is providing data smartly into the SQL query which manipulates ... Read More

What is the fetchone() method? Explain its use in MySQL Python?

Pawandeep Kaur

Pawandeep Kaur

Updated on 10-Jun-2021 12:12:58

Fetchone() methodFetchone() method is used when you want to select only the first row from the table. This method only returns the first row from the MySQL table.Use of fetchone() methodThe fetchone() is not used as a query to be used to the cursor object. The query passed is “SELECT ... Read More

How to select all the data from a table using MySQL in Python?

Pawandeep Kaur

Pawandeep Kaur

Updated on 10-Jun-2021 12:10:16

The tables in MySQL consist of rows and columns. The columns specify the fields and the rows specify the records of data. The data in the tables needs to be fetched to use. We may at times need to fetch all the data from the MySQL table.All the rows can ... Read More

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