What is true about the following SQL statement?

SELECT * FROM table_1;

This question is asking about what the code does in MySQL. Let's break it down:
SELECT * FROM table_1;
* SELECT: This tells the database you want to get data from the table. * *: This means you want to get all the data from the table. * FROM: This tells the database which table to get the data from. * table_1: This is the name of the table.
So, what does this code do? It retrieves all the data (all columns) from the table named 'table_1'.
Here's what the answer choices mean:
Option A: invalid: This is incorrect. The statement is a valid SQL statement.
Option B: display contents of table_1: This is the correct answer. The code will display all the rows and columns in the table.
Option C: improper case being used: While it's good practice to use lowercase for SQL keywords, this statement is valid even with uppercase.
Option D: display only column names in table_1: This is incorrect. The code will display all the data, not just the column names.
Let me know if you'd like any more explanation!