diff --git a/rules/ast/ast.go b/rules/ast/ast.go
index eff53ede5..e2bc5ec9b 100644
--- a/rules/ast/ast.go
+++ b/rules/ast/ast.go
@@ -392,7 +392,7 @@ func EvalVectorInstant(node VectorNode, timestamp clientmodel.Timestamp, storage
 	totalEvalTimer := queryStats.GetTimer(stats.TotalEvalTime).Start()
 	defer totalEvalTimer.Stop()
 
-	closer, err := prepareInstantQuery(node, timestamp, storage, queryStats)
+	closer, err := PrepareInstantQuery(node, timestamp, storage, queryStats)
 	if err != nil {
 		return nil, err
 	}
@@ -412,7 +412,7 @@ func EvalVectorRange(node VectorNode, start clientmodel.Timestamp, end clientmod
 	matrix := Matrix{}
 
 	prepareTimer := queryStats.GetTimer(stats.TotalQueryPreparationTime).Start()
-	closer, err := prepareRangeQuery(node, start, end, interval, storage, queryStats)
+	closer, err := PrepareRangeQuery(node, start, end, interval, storage, queryStats)
 	prepareTimer.Stop()
 	if err != nil {
 		return nil, err
diff --git a/rules/ast/printer.go b/rules/ast/printer.go
index 182f8544a..93163bf8f 100644
--- a/rules/ast/printer.go
+++ b/rules/ast/printer.go
@@ -166,7 +166,7 @@ func EvalToString(node Node, timestamp clientmodel.Timestamp, format OutputForma
 	defer totalEvalTimer.Stop()
 
 	prepareTimer := queryStats.GetTimer(stats.TotalQueryPreparationTime).Start()
-	closer, err := prepareInstantQuery(node, timestamp, storage, queryStats)
+	closer, err := PrepareInstantQuery(node, timestamp, storage, queryStats)
 	prepareTimer.Stop()
 	if err != nil {
 		panic(err)
@@ -221,7 +221,7 @@ func EvalToVector(node Node, timestamp clientmodel.Timestamp, storage local.Stor
 	defer totalEvalTimer.Stop()
 
 	prepareTimer := queryStats.GetTimer(stats.TotalQueryPreparationTime).Start()
-	closer, err := prepareInstantQuery(node, timestamp, storage, queryStats)
+	closer, err := PrepareInstantQuery(node, timestamp, storage, queryStats)
 	prepareTimer.Stop()
 	if err != nil {
 		panic(err)
diff --git a/rules/ast/query_analyzer.go b/rules/ast/query_analyzer.go
index 9807f7527..fe7f2569c 100644
--- a/rules/ast/query_analyzer.go
+++ b/rules/ast/query_analyzer.go
@@ -120,7 +120,8 @@ func (i *iteratorInitializer) visit(node Node) {
 	}
 }
 
-func prepareInstantQuery(node Node, timestamp clientmodel.Timestamp, storage local.Storage, queryStats *stats.TimerGroup) (local.Preloader, error) {
+// PrepareInstantQuery analyzes the query and preloads the necessary time range for each series.
+func PrepareInstantQuery(node Node, timestamp clientmodel.Timestamp, storage local.Storage, queryStats *stats.TimerGroup) (local.Preloader, error) {
 	totalTimer := queryStats.GetTimer(stats.TotalEvalTime)
 
 	analyzeTimer := queryStats.GetTimer(stats.QueryAnalysisTime).Start()
@@ -167,7 +168,8 @@ func prepareInstantQuery(node Node, timestamp clientmodel.Timestamp, storage loc
 	return p, nil
 }
 
-func prepareRangeQuery(node Node, start clientmodel.Timestamp, end clientmodel.Timestamp, interval time.Duration, storage local.Storage, queryStats *stats.TimerGroup) (local.Preloader, error) {
+// PrepareRangeQuery analyzes the query and preloads the necessary time range for each series.
+func PrepareRangeQuery(node Node, start clientmodel.Timestamp, end clientmodel.Timestamp, interval time.Duration, storage local.Storage, queryStats *stats.TimerGroup) (local.Preloader, error) {
 	totalTimer := queryStats.GetTimer(stats.TotalEvalTime)
 
 	analyzeTimer := queryStats.GetTimer(stats.QueryAnalysisTime).Start()