Fetching NULL datetime value in MySQL using GORM

You can set OutTime as a pointer so that it could be null. As seen in the doc:

type YourStruct struct {
     OutTime *time.Time
}

Then run your query

db.Where("out_time = ?", nil).Last(&visitDetail)

Go doesn't recognize NULL in particular. I think you can achieve it using a raw query in GORM. like this.

db.Raw("SELECT * FROM visit_details WHERE out_time is NULL order by id desc limit 1").Scan(&visitDetail)

This is one one to fetch the column. Hope this helps.

Just specify IS NULL in the query without the wildcard.

db.Where("out_time IS NULL").Last(&visitDetail)

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