From 58a1d0ca32cce1d3cb457b4195afac43319e5fee Mon Sep 17 00:00:00 2001
From: ice-myles <96409608+ice-myles@users.noreply.github.com>
Date: Mon, 12 Feb 2024 15:47:40 +0300
Subject: [PATCH] Fixed updateReferredByForAllT1Referrals sql timeouts: using
 orderby random() only 1 time for all users instead of for each record.

---
 go.mod                |  4 +--
 go.sum                |  4 +--
 users/users_delete.go | 58 +++++++++++++++++++++++--------------------
 3 files changed, 35 insertions(+), 31 deletions(-)

diff --git a/go.mod b/go.mod
index b6f8ba3b..f6843ed8 100644
--- a/go.mod
+++ b/go.mod
@@ -49,7 +49,7 @@ require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/distribution/reference v0.5.0 // indirect
 	github.com/docker/distribution v2.8.3+incompatible // indirect
-	github.com/docker/docker v25.0.2+incompatible // indirect
+	github.com/docker/docker v25.0.3+incompatible // indirect
 	github.com/docker/go-connections v0.5.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
@@ -66,7 +66,7 @@ require (
 	github.com/go-openapi/swag v0.22.9 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.17.0 // indirect
+	github.com/go-playground/validator/v10 v10.18.0 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/goccy/go-reflect v1.2.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
diff --git a/go.sum b/go.sum
index 25c074af..052c6d8f 100644
--- a/go.sum
+++ b/go.sum
@@ -125,8 +125,8 @@ github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/o
 github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
 github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
-github.com/go-playground/validator/v10 v10.17.0 h1:SmVVlfAOtlZncTxRuinDPomC2DkXJ4E5T9gDA0AIH74=
-github.com/go-playground/validator/v10 v10.17.0/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
+github.com/go-playground/validator/v10 v10.18.0 h1:BvolUXjp4zuvkZ5YN5t7ebzbhlUtPsPm2S9NAZ5nl9U=
+github.com/go-playground/validator/v10 v10.18.0/go.mod h1:dbuPbCMFw/DrkbEynArYaCwl3amGuJotoKCe95atGMM=
 github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
 github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
diff --git a/users/users_delete.go b/users/users_delete.go
index ee2bc5a3..8a67bf96 100644
--- a/users/users_delete.go
+++ b/users/users_delete.go
@@ -93,34 +93,38 @@ func (r *repository) updateReferredByForAllT1Referrals(ctx context.Context, user
 	if ctx.Err() != nil {
 		return errors.Wrap(ctx.Err(), "context failed")
 	}
-	sql := `SELECT (	SELECT X.ID 
+	sql := `
+		WITH randomized AS (
+			SELECT id, referred_by, created_at FROM users
+			WHERE id != 'bogus'
+			  AND id != 'icenetwork'
+			  AND username != id 
+			  AND referred_by != id 
+			  AND id != $1
+			  AND referred_by != $1
+			ORDER BY random()
+		)
+		SELECT (	SELECT X.ID 
 						FROM (	SELECT X.ID 
-								FROM (  SELECT r.id 
-										FROM users r
-										WHERE 1=1
-											  AND r.id != 'bogus'
-											  AND r.id != 'icenetwork'
-											  AND r.id != $1
-											  AND r.id != u.id 
-											  AND r.referred_by != u.id 
-											  AND r.referred_by != r.id 
-											  AND r.username != r.id 
-											  AND r.referred_by != $1
-											  AND r.created_at < u.created_at
-										ORDER BY RANDOM() 
-										LIMIT 1
-									 ) X
-			
-								UNION ALL 
-								 
-								SELECT u.id AS ID
-							  ) X
-						LIMIT 1
-				   ) new_referred_by,
-				   u.ID as id
-			FROM users u
-			WHERE u.referred_by = $1
-			  AND u.id != $1`
+									  FROM (
+										SELECT r.id
+										FROM randomized r
+										WHERE   r.id != u.id 
+												AND r.referred_by != u.id 								
+												AND r.created_at < u.created_at
+												LIMIT 1	
+									) X
+				
+									UNION ALL 
+									 
+									SELECT u.id AS ID
+								  ) X
+							LIMIT 1
+					   ) new_referred_by,
+					   u.ID as id
+				FROM users u
+				WHERE u.referred_by = $1
+				  AND u.id != $1`
 	type resp struct {
 		NewReferredBy UserID
 		ID            UserID `db:"id"`