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 'GO create database SupermarketDB on ( name='SupermarketDB', fileName='C:\Te' at line 2

抱歉，之前给出的代码是针对 MS SQL Server 的 T-SQL 语法，而不是 MySQL 的 SQL 语法。下面是使用 MySQL 的 SQL 语法来创建名为 SupermarketDB 的数据库，并在 C:\Test 目录下创建对应的数据文件和日志文件的代码：

CREATE DATABASE SupermarketDB
DEFAULT CHARACTER SET utf8mb4
DEFAULT COLLATE utf8mb4_general_ci;

USE SupermarketDB;

CREATE TABLE products (
  id INT(11) NOT NULL AUTO_INCREMENT,
  name VARCHAR(255) NOT NULL,
  price DECIMAL(10,2) NOT NULL,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;

SET GLOBAL innodb_file_format = Barracuda;
SET GLOBAL innodb_file_per_table = 1;
SET GLOBAL innodb_large_prefix = 1;

ALTER DATABASE SupermarketDB
ADD DATAFILE 'C:\\Test\\SupermarketDB.ibd'
ENGINE=InnoDB
DEFAULT CHARSET=utf8mb4
COLLATE=utf8mb4_general_ci;

ALTER TABLE products
ADD CONSTRAINT PK_products PRIMARY KEY (id)
USING BTREE
ROW_FORMAT=DYNAMIC
KEY_BLOCK_SIZE=16;

ALTER TABLE products
ADD INDEX idx_name (name)
USING BTREE
ROW_FORMAT=DYNAMIC
KEY_BLOCK_SIZE=16;

ALTER TABLE products
ADD INDEX idx_price (price)
USING BTREE
ROW_FORMAT=DYNAMIC
KEY_BLOCK_SIZE=16;

请注意，执行此代码前需要保证 MySQL 服务器已经安装在本地计算机上，并且已经启动。此外，还需要在 C 盘下手动创建 C:\Test 目录，否则执行代码时会报错。