出现SQL错误（1060）：重复的列名'name'

Question

我对编码的了解为0，我正在设置一个FiveM ESX服务器。请帮助我，我在这段代码中可以做什么

ALTER TABLE `users`
    ADD COLUMN `name` VARCHAR(50) NULL DEFAULT '' AFTER `money`,
    ADD COLUMN `skin` LONGTEXT NULL AFTER `name`,
    ADD COLUMN `job` varchar(50) NULL DEFAULT 'unemployed' AFTER `skin`,
    ADD COLUMN `job_grade` INT NULL DEFAULT 0 AFTER `job`,
    ADD COLUMN `loadout` LONGTEXT NULL AFTER `job_grade`,
    ADD COLUMN `position` VARCHAR(36) NULL AFTER `loadout`;

CREATE TABLE `items` (
    `name` varchar(50) NOT NULL,
    `label` varchar(50) NOT NULL,
    `limit` int(11) NOT NULL DEFAULT '-1',
    `rare` int(11) NOT NULL DEFAULT '0',
    `can_remove` int(11) NOT NULL DEFAULT '1',

    PRIMARY KEY (`name`)
);

CREATE TABLE `job_grades` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `job_name` varchar(50) DEFAULT NULL,
    `grade` int(11) NOT NULL,
    `name` varchar(50) NOT NULL,
    `label` varchar(50) NOT NULL,
    `salary` int(11) NOT NULL,
    `skin_male` longtext NOT NULL,
    `skin_female` longtext NOT NULL,

    PRIMARY KEY (`id`)
);

INSERT INTO `job_grades` VALUES (1,'unemployed',0,'unemployed','Unemployed',200,'{}','{}');

CREATE TABLE `jobs` (
    `name` varchar(50) NOT NULL,
    `label` varchar(50) DEFAULT NULL,

    PRIMARY KEY (`name`)
);

INSERT INTO `jobs` VALUES ('unemployed','Unemployed');

CREATE TABLE `user_accounts` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `identifier` varchar(22) NOT NULL,
    `name` varchar(50) NOT NULL,
    `money` double NOT NULL DEFAULT '0',

    PRIMARY KEY (`id`)
);

CREATE TABLE `user_inventory` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `identifier` varchar(22) NOT NULL,
    `item` varchar(50) NOT NULL,
    `count` int(11) NOT NULL,

    PRIMARY KEY (`id`)
);