Is there any array data type in MySQL like in PostgreSQL?

I need to store arrays of integers in a MySQL database. In there something equivalent to this in MySQL?

 CREATE TABLE tictactoe (
    squares   integer[3][3]
);

I want to store matrices with开发者_高级运维 dimension 20x6. I don't feel like creating a table with 120 columns. There is no need to query on this field, just need to store and retrieve full matrices.

If it matters, i use Perl.

No, there is no such thing. There is an open worklog for that, but no progress has been made on implementing this feature.

You have to emulate this somehow, using either multiple fields (9 in your case) or pack the integers together into a larger datatype (blob for example).

Store them in a text format using proper delimiters. ex:- If you want to store numbers from 1 to 9, store them in text format as 1-2-3-4-5-6-7-8-9 where '-' is a delimiter. Explode the string and get the desired numbers.

No there is not. Short answer but without knowing what you have do that is the answer.

There is no array datatype in MySQL. But you may store array in JSON array form. Of course the SQL text will be more complex in this case.

A sample:

-- create JSON column which will store an array
CREATE TABLE test (id INT, value JSON);
-- insert 2-dimension array
INSERT INTO test (id, value) VALUES 
  (1, '[[1,2,3], [4,5,6], [7,8,9]]'),
  (11, '[[11,12,13], [14,15,16], [17,18,19]]');
-- see the data
SELECT id, CAST(value AS CHAR) FROM test;

-- retrieve the values for an element array(1,2) which are 6 and 16
-- remember that the elements enumeration starts from zero
SELECT id, value->'$[1][2]' AS `array(1,2)` FROM test;

-- update the value for this element to 10 for the row with id=1
UPDATE test
SET value = JSON_REPLACE(value, '$[1][2]', 10)
WHERE id = 1;
-- view the result
SELECT id, CAST(value AS CHAR) FROM test;

-- update the value for the whole row to [20,21,22] for the row with id=11
UPDATE test
SET value = JSON_REPLACE(value, '$[1]', JSON_ARRAY(20,21,22))
WHERE id = 11;
-- view the result
SELECT id, CAST(value AS CHAR) FROM test;

-- retrieve the whole array as a table
SELECT test.id, jsontable.num, jsontable.`1`, jsontable.`2`, jsontable.`3`
FROM test
CROSS JOIN JSON_TABLE(test.value, 
                      '$[*]' COLUMNS (num FOR ORDINALITY,
                                      `1` INT PATH '$[0]',
                                      `2` INT PATH '$[1]',
                                      `3` INT PATH '$[2]')) jsontable;

fiddle

PS. JSON is binary datatype, CAST(value AS CHAR) needed for to convert it to string.