diff --git a/cnceye/edge/find.py b/cnceye/edge/find.py
index e505a6c..7a7f5c3 100644
--- a/cnceye/edge/find.py
+++ b/cnceye/edge/find.py
@@ -22,17 +22,19 @@ def find_edge(filepath: str, minimal_diff: float = 5.0):
         previous_distance = distance
 
 
-def find_edges(mysql_config: dict = MYSQL_CONFIG, minimal_diff: float = 5.0):
+def find_edges(
+    process_id: int, mysql_config: dict = MYSQL_CONFIG, minimal_diff: float = 5.0
+):
     cnx = mysql.connector.connect(**mysql_config, database="coord")
     cursor = cnx.cursor()
-    query = "SELECT * FROM sensor"
-    cursor.execute(query)
+    query = "SELECT * FROM sensor WHERE process_id = %s"
+    cursor.execute(query, (process_id,))
     rows = cursor.fetchall()
     previous_distance = ""
     edges = []
     for row in rows:
         # x, y, z, distance
-        distance = row[4]
+        distance = row[5]
         if check_if_edge_is_found(distance, previous_distance, minimal_diff):
             edges.append(row)
         previous_distance = distance
diff --git a/mysql/init.sql b/mysql/init.sql
index 5c5c2c1..d199970 100644
--- a/mysql/init.sql
+++ b/mysql/init.sql
@@ -75,6 +75,7 @@ CREATE TABLE IF NOT EXISTS `sensor` (
   `x` FLOAT NOT NULL,
   `y` FLOAT NOT NULL,
   `z` FLOAT NOT NULL,
+  `process_id` int(11) unsigned NOT NULL,
   `distance` FLOAT NOT NULL,
   `timestamp` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (`id`)
diff --git a/pyproject.toml b/pyproject.toml
index e488ec1..3f3630e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cnceye"
-version = "0.4.1"
+version = "0.4.2"
 description = "CMM python library"
 license = "MIT"
 authors = ["yuichiroaoki <45054071+yuichiroaoki@users.noreply.github.com>"]
diff --git a/tests/test_find.py b/tests/test_find.py
index b76dbd5..bb7625c 100644
--- a/tests/test_find.py
+++ b/tests/test_find.py
@@ -3,6 +3,8 @@
 import mysql.connector
 import sqlite3
 
+process_id = 100
+
 
 def copy_sqlite_db_to_mysql():
     db_path = "tests/fixtures/db/listener.db"
@@ -11,6 +13,7 @@ def copy_sqlite_db_to_mysql():
     query = "SELECT x,y,z,distance FROM coord"
     data = []
     for row in cur.execute(query):
+        row = (*row, process_id)
         data.append(row)
     cur.close()
     conn.close()
@@ -18,7 +21,8 @@ def copy_sqlite_db_to_mysql():
     mysql_conn = mysql.connector.connect(**MYSQL_CONFIG, database="coord")
     mysql_cur = mysql_conn.cursor()
     mysql_cur.executemany(
-        "INSERT INTO sensor(x, y, z, distance) VALUES (%s, %s, %s, %s)", data
+        "INSERT INTO sensor(x, y, z, distance, process_id) VALUES (%s,%s,%s, %s, %s)",
+        data,
     )
     mysql_conn.commit()
     mysql_cur.close()
@@ -27,7 +31,7 @@ def copy_sqlite_db_to_mysql():
 
 def test_find_edges():
     copy_sqlite_db_to_mysql()
-    measured_edges = find.find_edges()
+    measured_edges = find.find_edges(process_id)
     assert len(measured_edges) > 32
 
 
@@ -45,7 +49,7 @@ def test_find_edge_from_sqlite():
 
 
 def test_add_measured_edge_coord():
-    measured_edges = find.find_edges()
+    measured_edges = find.find_edges(process_id)
     edge_data = [
         (1, -50.0, -21.667, 10.0),
         (2, -50.0, 21.667, 10.0),