statsが重そうなやつ

Author: acidlemon

webapp/go/stats_handler.go

@@ -96,20 +96,18 @@ func getUserStatisticsHandler(c echo.Context) error {
 	for _, user := range users {
 		var reactions int64
 		query := `
-		SELECT COUNT(*) FROM users u
-		INNER JOIN livestreams l ON l.user_id = u.id
+		SELECT COUNT(*) FROM livestreams
 		INNER JOIN reactions r ON r.livestream_id = l.id
-		WHERE u.id = ?`
+		WHERE l.user_id = ?`
 		if err := tx.GetContext(ctx, &reactions, query, user.ID); err != nil && !errors.Is(err, sql.ErrNoRows) {
 			return echo.NewHTTPError(http.StatusInternalServerError, "failed to count reactions: "+err.Error())
 		}
 
 		var tips int64
 		query = `
-		SELECT IFNULL(SUM(l2.tip), 0) FROM users u
-		INNER JOIN livestreams l ON l.user_id = u.id	
+		SELECT IFNULL(SUM(l2.tip), 0) FROM livestreams
 		INNER JOIN livecomments l2 ON l2.livestream_id = l.id
-		WHERE u.id = ?`
+		WHERE l.user_id = ?`
 		if err := tx.GetContext(ctx, &tips, query, user.ID); err != nil && !errors.Is(err, sql.ErrNoRows) {
 			return echo.NewHTTPError(http.StatusInternalServerError, "failed to count tips: "+err.Error())
 		}

webapp/sql/initdb.d/10_schema.sql

@@ -46,7 +46,8 @@ CREATE TABLE `livestreams` (
   `playlist_url` VARCHAR(255) NOT NULL,
   `thumbnail_url` VARCHAR(255) NOT NULL,
   `start_at` BIGINT NOT NULL,
-  `end_at` BIGINT NOT NULL
+  `end_at` BIGINT NOT NULL,
+  INDEX `idx_livestreams_user_id` (`user_id`)
 ) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
 
 -- ライブ配信予約枠
@@ -117,5 +118,6 @@ CREATE TABLE `reactions` (
   `livestream_id` BIGINT NOT NULL,
   -- :innocent:, :tada:, etc...
   `emoji_name` VARCHAR(255) NOT NULL,
-  `created_at` BIGINT NOT NULL
+  `created_at` BIGINT NOT NULL,
+  INDEX `idx_reactions_livestream_id` (`livestream_id`)
 ) ENGINE=InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;