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CREATE TABLE products (

        id int(11) NOT NULL auto_increment,

        Description_article varchar(255) NULL,

        Price CHAR(20) NOT NULL,

        Total DOUBLE(16,2) NOT NULL,

        PRIMARY KEY(Description_article, Total));

)

INSERT INTO products VALUES ('description of product 1',1.00,''),('description of product 2',1.50,''),('description of product 3',1.50,'');