Final answer:
To rearrange columns, adjust the SELECT statement in the query. The order of columns listed determines their appearance in the result set. Neither table is 'more correct' as long as the data is accurate; grouping can vary by context.
Step-by-step explanation:
If you wanted to rearrange the order of the columns in a query, you would need to adjust the SELECT statement in your SQL query. The SELECT statement specifies the columns that you want to retrieve from the database, and the order in which you list the columns will determine the order in which they appear in your result set. If the initial query was SELECT name, age, address FROM customers;, and you wanted to see the address before the age, you would write the query as SELECT name, address, age FROM customers;.
Regarding your reference questions, 1) neither table is more 'correct' than the other as long as they both accurately represent the data, 2) data can be grouped by different criteria depending on what insights you are trying to gain, and advantages can vary by context, and 3) switching between tables might be necessary to analyze the data from different perspectives or to answer specific questions that require a particular arrangement or grouping of data.