Specify a nonzero value if no value is specified

[waffle-frame]

Describe the feature

Hi, I've been using Gorm for a long time.
I use uncle bob's clean architecture. My logic is that at the beginning of the project I paint all storage areas in the same style.
Sometimes it happens that I need to set a field to a non-zero value and I resort to non-standard solutions that take up a lot of my time. I had an idea, why not use sql.Null* as this

type NullString struct {
	String string
	Valid  bool // Valid is true if String is not NULL
}

If you specify valid as true, but do not specify a value, then the query will look like this: SELECT * FROM "processes" WHERE "processes"."logic" = '' I suggest turning it into: SELECT * FROM "processes" WHERE "processes"."logic" NOT NULL

Motivation

I don't know what to write here

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