Sql запрос. Сумма элементов столбца

CREATE TABLE `person` (
    `id` BIGINT(20) NOT NULL,
    `Login` VARCHAR(255) NULL DEFAULT NULL,
    `Name` VARCHAR(255) NULL DEFAULT NULL,
    `Password` VARCHAR(255) NULL DEFAULT NULL,
    PRIMARY KEY (`id`)
)
COLLATE='cp1251_general_ci'
ENGINE=MyISAM;

CREATE TABLE `task` (
    `id` BIGINT(20) NOT NULL,
    `Finish` BIT(1) NULL DEFAULT NULL,
    `personId` BIGINT(20) NULL DEFAULT NULL,
    `PersonName` VARCHAR(255) NULL DEFAULT NULL,
    `TaskName` VARCHAR(255) NULL DEFAULT NULL,
    `person_id` BIGINT(20) NULL DEFAULT NULL,
    PRIMARY KEY (`id`),
    INDEX `FK_iq2lm6hajomry3ojqkla3d8dt` (`person_id`)
)
COLLATE='cp1251_general_ci'
ENGINE=MyISAM;

CREATE TABLE `tasklog` (
    `id` BIGINT(20) NOT NULL,
    `Comment` VARCHAR(255) NULL DEFAULT NULL,
    `taskId` BIGINT(20) NULL DEFAULT NULL,
    `TaskName` VARCHAR(255) NULL DEFAULT NULL,
    `Time` BIGINT(20) NULL DEFAULT NULL,
    `task_id` BIGINT(20) NULL DEFAULT NULL,
    PRIMARY KEY (`id`),
    INDEX `FK_tdcbv46iud7hprmfjig3cavnf` (`task_id`)
)
COLLATE='cp1251_general_ci'
ENGINE=MyISAM;

SELECT person.Name, SUM(tasklog.Time)  
FROM person, tasklog, task 
WHERE  (person.id = task.person_id) AND (task.id = tasklog.task_id)
GROUP BY person.id

WHERE SUM(tasklog.time) > 100