export interface ColumnsContract{
    TABLE_CATALOG: string;
    TABLE_SCHEMA: string;
    TABLE_NAME: string;
    COLUMN_NAME: string;
    ORDINAL_POSITION: number;
    COLUMN_DEFAULT: string;
    IS_NULLABLE: string;
    DATA_TYPE: string;
    CHARACTER_MAXIMUM_LENGTH: string;
    CHARACTER_OCTET_LENGTH: number;
    NUMERIC_PRECISION: number;
    NUMERIC_SCALE: number;
    DATETIME_PRECISION: string;
    CHARACTER_SET_NAME: string;
    COLLATION_NAME: string;
    COLUMN_TYPE: string;
    COLUMN_KEY: string;
    EXTRA: string;
    PRIVILEGES: string;
    COLUMN_COMMENT: string;
    GENERATION_EXPRESSION: string;
}