diff --git a/backend/internal/handlers/stock.go b/backend/internal/handlers/stock.go
index acd67af..9706f8d 100644
--- a/backend/internal/handlers/stock.go
+++ b/backend/internal/handlers/stock.go
@@ -161,19 +161,19 @@ type distributionRow struct {
 }
 
 type distributionScan struct {
-	SH       int64
-	SZ       int64
-	BJ       int64
-	Up0_3    int64
-	Up3_5    int64
-	Up5_7    int64
-	Up7_10   int64
-	Up10     int64
-	Down0_3  int64
-	Down3_5  int64
-	Down5_7  int64
-	Down7_10 int64
-	Down10   int64
+	SH       int64 `gorm:"column:sh"`
+	SZ       int64 `gorm:"column:sz"`
+	BJ       int64 `gorm:"column:bj"`
+	Up0_3    int64 `gorm:"column:up_0_3"`
+	Up3_5    int64 `gorm:"column:up_3_5"`
+	Up5_7    int64 `gorm:"column:up_5_7"`
+	Up7_10   int64 `gorm:"column:up_7_10"`
+	Up10     int64 `gorm:"column:up_10"`
+	Down0_3  int64 `gorm:"column:down_0_3"`
+	Down3_5  int64 `gorm:"column:down_3_5"`
+	Down5_7  int64 `gorm:"column:down_5_7"`
+	Down7_10 int64 `gorm:"column:down_7_10"`
+	Down10   int64 `gorm:"column:down_10"`
 }
 
 type debugStatsResponse struct {