MySQL 错误 1604 位于第 1 行 ') NOT NULL, )' 附近

Question

mysql> USE bitcoin;
Database changed
mysql> CREATE TABLE btc ( uuid VARCHAR(36) NOT NULL, ign VARCHAR(20) NOT NULL, btc DOUBLE(30) NOT NULL, ) ENGINE=InnoDB;
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, ) ENGINE=InnoDB' at line 1
mysql> CREATE TABLE btc ( uuid VARCHAR(36) NOT NULL, ign VARCHAR(20) NOT NULL, btc DOUBLE(30) NOT NULL, );
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, )' at line 1
mysql> CREATE TABLE btc ( uuid VARCHAR(36) NOT NULL, ign VARCHAR(20) NOT NULL, btc DOUBLE(30) NOT NULL, );

在 Debian 上使用 MYSQL 命令行时会引发此错误。我正在尝试创建一个具有给定值的表。

mysql> CREATE TABLE btc ( uuid VARCHAR(36) NOT NULL, ign VARCHAR(20) NOT NULL, btc DOUBLE(30) NOT NULL);
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)' at line 1
mysql>

也不起作用。

Answer 1

在每个 CREATE TABLE 语句中的最后一个 NOT NULL 和右括号之间有一个额外的 ,，并且在我认为无效的 DOUBLE(30):

mysql> CREATE TABLE btc ( uuid VARCHAR(36) NOT NULL, ign VARCHAR(20) NOT NULL,
  btc    DOUBLE(30) NOT NULL, ) ENGINE=InnoDB;
               ^^^^             ^

删除它，因此语句的结尾改为 btc DOUBLE NOT NULL) ENGINE=InnoDB;。