如何使用以下错误消息调试 SQL 查询

Question

This is my query.

CREATE TABLE `requirements` 
(
    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT, 
    `requirement_id` VARCHAR NOT NULL, 
    `state` VARCHAR NOT NULL, 
    `city` VARCHAR NOT NULL,
    `salary_per_anum` FLOAT NOT NULL, 
    `is_closed` TINYINT(1) NOT NULL, 
    `created_updated` DATETIME NOT NULL, 
    CONSTRAINT `pk_requirements` PRIMARY KEY(`id`)
);

and this is the error message

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NOT NULL, `state` VARCHAR NOT NULL, `city` VARCHAR NOT NULL, `salary_per_anum` F' at line 1

how can I debug what seems to be the issue?

Answer 1

You need to define a length of the string colum like

`requirement_id` VARCHAR(100)

and the same with column state and city .

But since requirement_id looks like a number id column it must be of the same type as id in table requirements , probably int .

Also your constraint seems to be defined wrong. It should refer to the table requirements .