gorm Raw查询报错 sql converting argument $1 type unsupported type struct {}, a struct; invalid value, should be pointer to struct or slice; invalid value, should be pointer to struct or slice

golang gorm 查询时提示如下,即使sqlParam已经初始化过也一直提示无效值

报错内容

sql: converting argument $1 type: unsupported type struct {}, a struct; invalid value, should be pointer to struct or slice; invalid value, should be pointer to struct or slice

原因:

发起查询时,Raw方法第二个参数不能为空,并且需要在Raw方法的第一个sql语句中有调用@第二个参数中的字段

解决方案:

增加 Placeholder , 初始化值为1,并在sql语句中调用 @Placeholder , 或者根据请求情况,增加判断是否要传入Raw方法的第二个参数

sql := "SELECT * FROM test WHERE @Placeholder " //SELECT * FROM test WHERE 1
var sqlParam struct {
	Applyno       string
	Status        *int
	Placeholder   int
}
sqlParam.Placeholder = 1
if info.Applyno != "" {
	sql += " AND applyno = @Applyno "
	sqlParam.Applyno = info.Applyno
}
dbRawErr := db.Raw(sql, sqlParam).Scan(&dataList).Error