Function InferTypes

pkg/sql/sem/tree/datum.go:6349–6361

InferTypes takes a list of strings produced by ParsePath and returns a slice of datum types inferred from the strings. Type DInt will be used if possible, otherwise DString. For example, a vals slice ["1", "foo"] will give a types slice [Dint, DString].

(vals []string)

// otherwise DString. For example, a vals slice ["1", "foo"] will give a types
// slice [Dint, DString].
func InferTypes(vals []string) []types.Family {
	// Infer the datum types and populate typs accordingly.
	typs := make([]types.Family, len(vals))
	for i := 0; i < len(vals); i++ {
		typ := types.IntFamily
		_, err := ParseDInt(vals[i])
		if err != nil {
			typ = types.StringFamily
		}
		typs[i] = typ
	}
	return typs
}

// AdjustValueToType checks that the width (for strings, byte arrays, and bit
// strings) and scale (decimal). and, shape/srid (for geospatial types) fits the