17 Temmuz 2024 Çarşamba

CREATE EVENT - Scheduled Task İçindir

Giriş
Açıklaması şöyle
Starting from MySQL 9.0.0, the following Event syntax is available:

CREATE EVENT (create event)
ALTER EVENT (modify event)
DROP EVENT (delete event)

EVENT statements do not support the use of placeholder parameters (?).
CREATE EVENT
İmzası şöyle
CREATE EVENT event_name
ON SCHEDULE AT or EVERY + specified interval DO SQL_statement
Örnek
Şöyle yaparız
CREATE EVENT myevent
    ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 1 HOUR
    DO
      UPDATE myschema.mytable SET mycol = mycol + 1;

MySQL Sürümleri

Bazı bilgiler burada
MySQL 8 - April 19, 2018
Altı yıl aradan sonra 
MySQL 9 - July 2, 2024

LIMIT ve Covering Index + Subquery

Örnek Şöyle yaparız SELECT t1.name, t1.age, t1.gender, t1.create_time FROM student as t1    INNER JOIN     (SELECT id FROM student ORDER BY ...