Function couldBeDate

src/dsql/ExprNodes.cpp:13944–13947

// see if it is something that *could* represent a date value

static bool couldBeDate(const dsc desc)
{
	return DTYPE_IS_DATE(desc.dsc_dtype) || desc.dsc_dtype <= dtype_any_text;
}

// Take the input number, assume it represents a fractional count of days.
// Convert it to a count of microseconds.