CREATE TABLE `service_ai_knowledge`
(
    `id`               bigint       NOT NULL,
    `vector_source_id` varchar(100) NOT NULL,
    `name`             varchar(100) NOT NULL,
    `strategy`         varchar(10)  NOT NULL,
    `created_time`     datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `modified_time`    datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`)
) DEFAULT CHARSET = utf8mb4;