Wrong sorting of exercises in stats graphs

[tolstovskiy]

Exersizes are sorted randomly if there are severral of the same exersize on the same day.

Example:
I've created execise to reproduce the problem:

Here are two days filled with several exercises with diffirent weight in descending and ascending order:


Same exercises in DB:

Stats:

I assume they are supposed to be sorted by ID or at least in ascending\descending order but it looks random.

[tolstovskiy]

I guess the problem is here but I might be wrong since i'm not a GO coder.

1. sets are selected from DB ordered by ID

// SelectSet - select all sets from DB
func SelectSet(path string) (sets []models.Set) {

	mu.Lock()
	dbx := connect(path)
	err := dbx.Select(&sets, "SELECT * FROM sets ORDER BY ID ASC")
	mu.Unlock()

	check.IfError(err)

	return sets
}

2. In web they're sorted only by date:

// Sort Sets by Date
	sort.Slice(guiData.ExData.Sets, func(i, j int) bool {
		return guiData.ExData.Sets[i].Date < guiData.ExData.Sets[j].Date
	})

Maybe it's all intended. If so, what is the right way to add several exercises with increasing or decreasing weight?