MySQL行和列选择

Question

I got a table structure in my HTML

Needs to populate the data as rows and columns, some columns having a value "1"

Fixed 10 Rows and 10 Columns and there are multiple tables

So I just created a database like the following

ga_id (pk)   |   A1  |  A2  |  A3 ......
-------------+-------+------+-------------
 125         |  1    | 0    |  0 ..........
-------------+-------+------+--------------
 126         |  0    | 1    |  1 ...

I got the following questions

1. For achieving the same, is my approach is correct ?

2. I need to check whether a column or a row is fully occupied with a value "1"

   for eg:-
   Case block D4 then I need to check D1,D2,D3..... D10 having the same value ie 1

And A4,B4,C4,D4.......J4 values having the same value

Hope my question is clear,

Answer 1

As a comment, the " correct approach " is whatever approach solves your issue. While normalization and the third normal form are concepts that are battle tested and definitely worth mastering, if the current structure solves your particular issue, go with it.

A possible, normalized DB structure would be:

• Table columns: column_id, name
• Table rows: row_id, name
• Table tables: table_id, name
• Table table_rows_columns: table_id, row_id, column_id, value

Answer 2

By way of example, a normalised environment might look something like this:

CREATE TABLE my_table 
(id INT NOT NULL
,x INT NOT NULL
,y CHAR(1) NOT NULL
,val INT NOT NULL
,PRIMARY KEY(id,x,y)
);

INSERT INTO my_table VALUES
(101,2,'B',1),
(101,2,'I',1),
(101,4,'D',1),
(101,5,'I',1),
(101,7,'D',1),
(101,7,'H',1),
(101,8,'G',1);