select: add MISSING operator support (#14406)

Probably not full support, but for regular checks it should work.

Fixes #14358

internal/s3select/json/record.go

@@ -89,6 +89,8 @@ func (r *Record) Set(name string, value *sql.Value) (sql.Record, error) {
 		v = s
 	} else if value.IsNull() {
 		v = nil
+	} else if value.IsMissing() {
+		return r, nil
 	} else if b, ok := value.ToBytes(); ok {
 		// This can either be raw json or a CSV value.
 		// Only treat objects and arrays as JSON.