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Asked: 2026-05-28T02:55:23+00:00

I have a DB consisting of 4 fields.My application will retrieve data from that

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I have a DB consisting of 4 fields.My application will retrieve data from that db. I have one primary key(the id).I also want depending on the id, provide other data that will be organized in a new table. What is better? Create a new table and search again into it, or given the fact that I have already found the row because of the id, create a new element that will be a table. For example can I create a new element named info, and make it be to something like an array,as I want 11 rows,and 2 columns for the info. My SQL code so far is this: 

CREATE TABLE people (
   id INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
   name VARCHAR( 100 ) NOT NULL ,
   sex BOOL NOT NULL DEFAULT '1',
   birthyear INT NOT NULL
)

What changes do I need to make? This table is already created.

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1 Answer

  1. Editorial Team

    If each row in the existing table now also needs associating with an 11×2 set of data, you’re best off creating another table.

    Don’t try to stuff 22 items of data into a single field, it’s a really bad idea.

    If, however, it’s always the same (22 items), you could just add 22 fields. It depends on how that data is going to be used, searched, joined on, etc.

    Exactly how to do that depends on your RDBMS and your interface to it. It may be easier to create a whole new table and copy the old data across. Or the environment you have may allow you to add the columns and it do the leg work for you.

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