Behavioural differences between sql.Named with query vs NamedExecContext cause UPDATE error

[koalazub]

Tools:
go 1.21
github.com/gorilla/schema v1.2.1
github.com/jmoiron/sqlx v1.3.5

I'm currently getting an error when using named parameters for my Azure SQL Database.

Contrived, but when performing the following:

	updateQry := `UPDATE tblIdNumber SET
    Cust1 = @Cust1
WHERE IdNumber = @IdNumber 
`

	_, err := d.DB.NamedExecContext(ctx, updateQry, docket)
	if err != nil {
		slog.Error("couldn't update IdNumber", err)
		return err
	}

I get an error:

mssql: Must declare the scalar variable "@CUST1"."

Yet when I do:

	updateQry := `UPDATE tblIdNumber SET
    Cust1 = @Cust1
WHERE IdNumber = @IdNumber 

	_, err := d.DB.ExecContext(ctx, updateQry,
		sql.Named("Cust1", Person.Cust1),
	)
	if err != nil {
		slog.Error("couldn't update docket", err)
		return err
	}

It correctly updates the table.

I had the expectation that it removed the need to explicitly state each named parameter but that doesn't seem to be the case in this context. I am pretty new to sqlx, so I'm not sure if I'm missing something here. I did see that there were some fixes to named params in #406 for SQL Server