diff --git a/pkg/query-service/__debug_bin b/pkg/query-service/__debug_bin
new file mode 100755
index 0000000000..b786eef17b
Binary files /dev/null and b/pkg/query-service/__debug_bin differ
diff --git a/pkg/query-service/app/clickhouseReader/reader.go b/pkg/query-service/app/clickhouseReader/reader.go
index f83b8e73f4..2b1b319a1a 100644
--- a/pkg/query-service/app/clickhouseReader/reader.go
+++ b/pkg/query-service/app/clickhouseReader/reader.go
@@ -239,3 +239,33 @@ func (r *ClickHouseReader) SearchSpans(ctx context.Context, queryParams *model.S
 
 	return &searchSpansResult, nil
 }
+
+func (r *ClickHouseReader) GetServiceDBOverview(ctx context.Context, queryParams *model.GetServiceOverviewParams) (*[]model.ServiceDBOverviewItem, error) {
+
+	var serviceDBOverviewItem []model.ServiceDBOverviewItem
+
+	query := fmt.Sprintf("SELECT toStartOfInterval(timestamp, INTERVAL %s minute) as time, avg(durationNano) as avgDuration, count(1) as numCalls, dbSystem FROM %s WHERE serviceName='%s' AND timestamp>='%s' AND timestamp<='%s' AND kind='3' AND dbName IS NOT NULL GROUP BY time, dbSystem ORDER BY time DESC", strconv.Itoa(int(queryParams.StepSeconds/60)), r.indexTable, queryParams.ServiceName, strconv.FormatInt(queryParams.Start.UnixNano(), 10), strconv.FormatInt(queryParams.End.UnixNano(), 10))
+
+	err := r.db.Select(&serviceDBOverviewItem, query)
+
+	zap.S().Info(query)
+
+	if err != nil {
+		zap.S().Debug("Error in processing sql query: ", err)
+		return nil, fmt.Errorf("Error in processing sql query")
+	}
+
+	for i, _ := range serviceDBOverviewItem {
+		timeObj, _ := time.Parse(time.RFC3339Nano, serviceDBOverviewItem[i].Time)
+		serviceDBOverviewItem[i].Timestamp = int64(timeObj.UnixNano())
+		serviceDBOverviewItem[i].Time = ""
+		serviceDBOverviewItem[i].CallRate = float32(serviceDBOverviewItem[i].NumCalls) / float32(queryParams.StepSeconds)
+	}
+
+	if serviceDBOverviewItem == nil {
+		serviceDBOverviewItem = []model.ServiceDBOverviewItem{}
+	}
+
+	return &serviceDBOverviewItem, nil
+
+}
diff --git a/pkg/query-service/app/druidReader/reader.go b/pkg/query-service/app/druidReader/reader.go
index 62043be8f6..27737ede2a 100644
--- a/pkg/query-service/app/druidReader/reader.go
+++ b/pkg/query-service/app/druidReader/reader.go
@@ -50,3 +50,7 @@ func (druid *DruidReader) GetServices(ctx context.Context, query *model.GetServi
 func (druid *DruidReader) SearchSpans(ctx context.Context, query *model.SpanSearchParams) (*[]model.SearchSpansResult, error) {
 	return druidQuery.SearchSpans(druid.Client, query)
 }
+
+func (druid *DruidReader) GetServiceDBOverview(ctx context.Context, query *model.GetServiceOverviewParams) (*[]model.ServiceDBOverviewItem, error) {
+	return druidQuery.GetServiceDBOverview(druid.SqlClient, query)
+}
diff --git a/pkg/query-service/app/http_handler.go b/pkg/query-service/app/http_handler.go
index 084b8d57ac..2787cd9712 100644
--- a/pkg/query-service/app/http_handler.go
+++ b/pkg/query-service/app/http_handler.go
@@ -60,7 +60,7 @@ func (aH *APIHandler) RegisterRoutes(router *mux.Router) {
 	router.HandleFunc("/api/v1/services", aH.getServices).Methods(http.MethodGet)
 	// router.HandleFunc("/api/v1/services/list", aH.getServicesList).Methods(http.MethodGet)
 	router.HandleFunc("/api/v1/service/overview", aH.getServiceOverview).Methods(http.MethodGet)
-	// router.HandleFunc("/api/v1/service/dbOverview", aH.getServiceDBOverview).Methods(http.MethodGet)
+	router.HandleFunc("/api/v1/service/dbOverview", aH.getServiceDBOverview).Methods(http.MethodGet)
 	// router.HandleFunc("/api/v1/service/externalAvgDuration", aH.GetServiceExternalAvgDuration).Methods(http.MethodGet)
 	// router.HandleFunc("/api/v1/service/externalErrors", aH.getServiceExternalErrors).Methods(http.MethodGet)
 	// router.HandleFunc("/api/v1/service/external", aH.getServiceExternal).Methods(http.MethodGet)
@@ -177,21 +177,22 @@ func (aH *APIHandler) user(w http.ResponseWriter, r *http.Request) {
 
 // }
 
-// func (aH *APIHandler) getServiceDBOverview(w http.ResponseWriter, r *http.Request) {
+func (aH *APIHandler) getServiceDBOverview(w http.ResponseWriter, r *http.Request) {
 
-// 	query, err := parseGetServiceExternalRequest(r)
-// 	if aH.handleError(w, err, http.StatusBadRequest) {
-// 		return
-// 	}
+	query, err := parseGetServiceExternalRequest(r)
+	if aH.handleError(w, err, http.StatusBadRequest) {
+		return
+	}
 
-// 	result, err := druidQuery.GetServiceDBOverview(aH.sqlClient, query)
-// 	if aH.handleError(w, err, http.StatusBadRequest) {
-// 		return
-// 	}
+	result, err := (*aH.reader).GetServiceDBOverview(context.Background(), query)
 
-// 	aH.writeJSON(w, r, result)
+	if aH.handleError(w, err, http.StatusBadRequest) {
+		return
+	}
 
-// }
+	aH.writeJSON(w, r, result)
+
+}
 
 // func (aH *APIHandler) getServiceExternal(w http.ResponseWriter, r *http.Request) {
 
diff --git a/pkg/query-service/app/interface.go b/pkg/query-service/app/interface.go
index 6408422786..2705569053 100644
--- a/pkg/query-service/app/interface.go
+++ b/pkg/query-service/app/interface.go
@@ -11,4 +11,5 @@ type Reader interface {
 	GetServices(ctx context.Context, query *model.GetServicesParams) (*[]model.ServiceItem, error)
 	// GetApplicationPercentiles(ctx context.Context, query *model.ApplicationPercentileParams) ([]godruid.Timeseries, error)
 	SearchSpans(ctx context.Context, query *model.SpanSearchParams) (*[]model.SearchSpansResult, error)
+	GetServiceDBOverview(ctx context.Context, query *model.GetServiceOverviewParams) (*[]model.ServiceDBOverviewItem, error)
 }
diff --git a/pkg/query-service/model/response.go b/pkg/query-service/model/response.go
index fca92f5765..8c4915355e 100644
--- a/pkg/query-service/model/response.go
+++ b/pkg/query-service/model/response.go
@@ -78,12 +78,12 @@ type ServiceExternalItem struct {
 }
 
 type ServiceDBOverviewItem struct {
-	Time        string  `json:"time,omitempty"`
-	Timestamp   int64   `json:"timestamp,omitempty"`
-	DBSystem    string  `json:"dbSystem,omitempty"`
-	AvgDuration float32 `json:"avgDuration,omitempty"`
-	NumCalls    int     `json:"numCalls,omitempty"`
-	CallRate    float32 `json:"callRate,omitempty"`
+	Time        string  `json:"time,omitempty" db:"time,omitempty"`
+	Timestamp   int64   `json:"timestamp,omitempty" db:"timestamp,omitempty"`
+	DBSystem    string  `json:"dbSystem,omitempty" db:"dbSystem,omitempty"`
+	AvgDuration float32 `json:"avgDuration,omitempty" db:"avgDuration,omitempty"`
+	NumCalls    int     `json:"numCalls,omitempty" db:"numCalls,omitempty"`
+	CallRate    float32 `json:"callRate,omitempty" db:"callRate,omitempty"`
 }
 
 type ServiceMapDependencyItem struct {