正确
spSql := fmt.Sprintf("SELECT course_name,course_code FROM w_spl_course "+
"WHERE state = 1 and course_code in (%v)", strings.Join(productCode, ","))
specialCourse, err := models.DB("default").QueryString(spSql)
错误:
specialCourse, err := models.DB("default").QueryString("SELECT course_name,course_code FROM w_spl_course "+ "WHERE state = 1 and course_code in (?)", strings.Join(productCode, ","))