创建表时mysql错误

Question

我是mysql新手，请帮我做这个表。

CREATE TABLE `jjsaar`.`dd_chq` (
    `reg_id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, 
    `receipt_no` INTEGER UNSIGNED NOT NULL, 
    `name` VARCHAR NOT NULL, 
    `add` VARCHAR NOT NULL, 
    `phone_no` VARCHAR NOT NULL, 
    `purpose` VARCHAR NOT NULL, 
    `pay_method` VARCHAR NOT NULL, 
    `amount` INTEGER UNSIGNED NOT NULL, 
    `dd_chq_no` VARCHAR NOT NULL, 
    `bank_details` VARCHAR NOT NULL, 
    `timestamp` TIMESTAMP NOT NULL, 
    PRIMARY KEY (`reg_id`) 
) 
ENGINE = InnoDB; 

Answer 1

我想你有这样的错误消息

您的SQL语法错误;检查 对应于你的MySQL服务器版本正确的语法使用 附近手册 'NOT NULL， add VARCHAR NOT NULL， phone_no VARCHAR（25）NOT NULL，' 在第4行：

你应指定长度VARCHAR值，例如

`name` VARCHAR(25) NOT NULL, 

你工作CREATE TABLE声明

CREATE TABLE `jjsaar`.`dd_chq` 
(
    `reg_id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, 
    `receipt_no` INTEGER UNSIGNED NOT NULL, 
    `name` VARCHAR(25) NOT NULL, 
    `add` VARCHAR(25) NOT NULL, 
    `phone_no` VARCHAR(25) NOT NULL, 
    `purpose` VARCHAR(25) NOT NULL, 
    `pay_method` VARCHAR(25) NOT NULL, 
    `amount` INTEGER UNSIGNED NOT NULL, 
    `dd_chq_no` VARCHAR(25) NOT NULL, 
    `bank_details` VARCHAR(25) NOT NULL, 
    `timestamp` TIMESTAMP NOT NULL, 
    PRIMARY KEY (`reg_id`) 
) 
ENGINE = InnoDB; 

• SQLFiddle Demo Link

Answer 2

您必须指定varchar长度。例如：

CREATE TABLE `jjsaar`.`dd_chq` (
    `reg_id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, 
    `receipt_no` INTEGER UNSIGNED NOT NULL, 
    `name` VARCHAR(50) NOT NULL, 
    `add` VARCHAR(50) NOT NULL, 
    `phone_no` VARCHAR(50) NOT NULL, 
    `purpose` VARCHAR(50) NOT NULL, 
    `pay_method` VARCHAR(50) NOT NULL, 
    `amount` INTEGER UNSIGNED NOT NULL, 
    `dd_chq_no` VARCHAR(50) NOT NULL, 
    `bank_details` VARCHAR(50) NOT NULL, 
    `timestamp` TIMESTAMP NOT NULL, 
    PRIMARY KEY (`reg_id`) 
) 
ENGINE = InnoDB;