util

func ExtractFirstNumeric ¶

func ExtractFirstNumeric(result *models.QueryResult) (float64, error)

ExtractFirstNumeric extracts a numeric value from the first column of the first row in a query result. It supports both value and pointer types for all numeric types. If the query returns no rows (e.g., no matching data for an aggregate query), it returns 0 instead of an error since this typically means "zero matches".