From 354d3b0423be94d57835cee818de3d33759df76b Mon Sep 17 00:00:00 2001
From: Super-long <0x4f4f4f4f@gmail.com>
Date: Sat, 7 May 2022 21:58:00 +0800
Subject: [PATCH] fix: Eliminate useless for loops.

Signed-off-by: Super-long <0x4f4f4f4f@gmail.com>
---
 data/experiment.go  | 4 ++--
 data/preparation.go | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/data/experiment.go b/data/experiment.go
index 38369bf0..f5692075 100644
--- a/data/experiment.go
+++ b/data/experiment.go
@@ -121,10 +121,10 @@ func (s *Source) ExperimentTableExists() (bool, error) {
 	}
 	defer rows.Close()
 	var c int
-	for rows.Next() {
+	if rows.Next() {
 		rows.Scan(&c)
-		break
 	}
+
 	return c != 0, nil
 }
 
diff --git a/data/preparation.go b/data/preparation.go
index 80fa0ca3..dc4496c3 100644
--- a/data/preparation.go
+++ b/data/preparation.go
@@ -177,10 +177,10 @@ func (s *Source) PreparationTableExists() (bool, error) {
 	}
 	defer rows.Close()
 	var c int
-	for rows.Next() {
+	if rows.Next() {
 		rows.Scan(&c)
-		break
 	}
+
 	return c != 0, nil
 }