选择今年的月份MySql

Question

I want to show all this year months (until today month). For example, this is my desired result:

MONTHS
Jan
Feb
Mar

Appreciate your help. Thanks..

Answer 1

Using the following leaves a month (as 1-12) that you can join against other fields:

SELECT month, MONTHNAME(DATE_ADD(CONCAT(YEAR(NOW()),'-01-01'), INTERVAL month-1 MONTH)) as name_of_month
FROM (SELECT 1 month
             UNION ALL
             SELECT 2 month
             UNION ALL
             SELECT 3 month
             UNION ALL
             SELECT 4 month
             UNION ALL
             SELECT 5 month
             UNION ALL
             SELECT 6 month
             UNION ALL
             SELECT 7 month
             UNION ALL
             SELECT 8 month
             UNION ALL
             SELECT 9 month
             UNION ALL
             SELECT 10 month
             UNION ALL
             SELECT 11 month
             UNION ALL
             SELECT 12 month) m
 WHERE month <= MONTH(NOW())

Answer 2

While this is quite trivial in a programming language kind be a bit complex when attempting with mysql.

You can look at the live code run here. https://paiza.io/projects/zcABYyyM_uu3r2LX7cCmfQ

DELIMITER //
CREATE PROCEDURE generate_months_upto_current_month()
BEGIN
    DECLARE month  INT;
    DECLARE inter  INT;
    DECLARE result  VARCHAR(25);

    DECLARE current_month  INT;

    SET month = 1;
    SET current_month = MONTH(CURRENT_DATE());

    WHILE month  <= current_month DO
        SET inter = current_month-month;
        SET result = MONTHNAME(DATE_SUB(CURRENT_DATE(), INTERVAL inter MONTH));
        SELECT SUBSTRING(result,1,3); -- to truncate to 3 letter months
        SET month = month + 1;
    END WHILE;
END //
DELIMITER ;


CALL generate_months_upto_current_month();

Since I am using loops I had to use a stored procedure. I have mainly used mysql date functions to sort out the date interactions.

Have a look at the following resource for details on Date functions