diff --git a/rustmodels/src/medrecord/querying/attributes.rs b/rustmodels/src/medrecord/querying/attributes.rs
index 0c109c61..b6132101 100644
--- a/rustmodels/src/medrecord/querying/attributes.rs
+++ b/rustmodels/src/medrecord/querying/attributes.rs
@@ -1,4 +1,6 @@
-use medmodels_core::medrecord::{AttributesTreeOperand, Wrapper};
+use medmodels_core::medrecord::{
+    AttributesTreeOperand, MultipleAttributesOperand, SingleAttributeOperand, Wrapper,
+};
 use pyo3::pyclass;
 
 #[pyclass]
@@ -16,3 +18,35 @@ impl From<PyAttributesTreeOperand> for Wrapper<AttributesTreeOperand> {
         operand.0
     }
 }
+
+#[pyclass]
+#[repr(transparent)]
+pub struct PyMultipleAttributesOperand(Wrapper<MultipleAttributesOperand>);
+
+impl From<Wrapper<MultipleAttributesOperand>> for PyMultipleAttributesOperand {
+    fn from(operand: Wrapper<MultipleAttributesOperand>) -> Self {
+        Self(operand)
+    }
+}
+
+impl From<PyMultipleAttributesOperand> for Wrapper<MultipleAttributesOperand> {
+    fn from(operand: PyMultipleAttributesOperand) -> Self {
+        operand.0
+    }
+}
+
+#[pyclass]
+#[repr(transparent)]
+pub struct PySingleAttributeOperand(Wrapper<SingleAttributeOperand>);
+
+impl From<Wrapper<SingleAttributeOperand>> for PySingleAttributeOperand {
+    fn from(operand: Wrapper<SingleAttributeOperand>) -> Self {
+        Self(operand)
+    }
+}
+
+impl From<PySingleAttributeOperand> for Wrapper<SingleAttributeOperand> {
+    fn from(operand: PySingleAttributeOperand) -> Self {
+        operand.0
+    }
+}
diff --git a/rustmodels/src/medrecord/querying/nodes.rs b/rustmodels/src/medrecord/querying/nodes.rs
index e03e108c..1f31391f 100644
--- a/rustmodels/src/medrecord/querying/nodes.rs
+++ b/rustmodels/src/medrecord/querying/nodes.rs
@@ -3,7 +3,9 @@ use super::{
     PyGroupCardinalityWrapper, PyMedRecordAttributeCardinalityWrapper,
 };
 use crate::medrecord::attribute::PyMedRecordAttribute;
-use medmodels_core::medrecord::{EdgeDirection, NodeIndicesOperand, NodeOperand, Wrapper};
+use medmodels_core::medrecord::{
+    EdgeDirection, NodeIndexOperand, NodeIndicesOperand, NodeOperand, Wrapper,
+};
 use pyo3::{
     pyclass, pymethods,
     types::{PyAnyMethods, PyFunction},
@@ -118,3 +120,46 @@ impl From<PyNodeIndicesOperand> for Wrapper<NodeIndicesOperand> {
         operand.0
     }
 }
+
+#[pymethods]
+impl PyNodeIndicesOperand {
+    pub fn max(&mut self) -> PyNodeIndexOperand {
+        self.0.max().into()
+    }
+
+    pub fn min(&mut self) -> PyNodeIndexOperand {
+        self.0.min().into()
+    }
+
+    pub fn count(&mut self) -> PyNodeIndexOperand {
+        self.0.count().into()
+    }
+
+    pub fn sum(&mut self) -> PyNodeIndexOperand {
+        self.0.sum().into()
+    }
+
+    pub fn first(&mut self) -> PyNodeIndexOperand {
+        self.0.first().into()
+    }
+
+    pub fn last(&mut self) -> PyNodeIndexOperand {
+        self.0.last().into()
+    }
+}
+
+#[pyclass]
+#[repr(transparent)]
+pub struct PyNodeIndexOperand(Wrapper<NodeIndexOperand>);
+
+impl From<Wrapper<NodeIndexOperand>> for PyNodeIndexOperand {
+    fn from(operand: Wrapper<NodeIndexOperand>) -> Self {
+        Self(operand)
+    }
+}
+
+impl From<PyNodeIndexOperand> for Wrapper<NodeIndexOperand> {
+    fn from(operand: PyNodeIndexOperand) -> Self {
+        operand.0
+    }
+}
diff --git a/rustmodels/src/medrecord/querying/values.rs b/rustmodels/src/medrecord/querying/values.rs
index 5a7f0032..9960e1b0 100644
--- a/rustmodels/src/medrecord/querying/values.rs
+++ b/rustmodels/src/medrecord/querying/values.rs
@@ -1,4 +1,4 @@
-use medmodels_core::medrecord::{MultipleValuesOperand, Wrapper};
+use medmodels_core::medrecord::{MultipleValuesOperand, SingleValueOperand, Wrapper};
 use pyo3::pyclass;
 
 #[pyclass]
@@ -16,3 +16,19 @@ impl From<PyMultipleValuesOperand> for Wrapper<MultipleValuesOperand> {
         operand.0
     }
 }
+
+#[pyclass]
+#[repr(transparent)]
+pub struct PySingleValueOperand(Wrapper<SingleValueOperand>);
+
+impl From<Wrapper<SingleValueOperand>> for PySingleValueOperand {
+    fn from(operand: Wrapper<SingleValueOperand>) -> Self {
+        Self(operand)
+    }
+}
+
+impl From<PySingleValueOperand> for Wrapper<SingleValueOperand> {
+    fn from(operand: PySingleValueOperand) -> Self {
+        operand.0
+    }
+}