diff --git a/rust/sql/postgres/postgres/firststep/README.md b/rust/sql/postgres/postgres/firststep/README.md
new file mode 100644
index 00000000..54a1e32e
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/README.md
@@ -0,0 +1,37 @@
+# rust postgres firststep
+
+## Development
+
+### Start dev environment
+
+```sh
+docker compose up -d
+```
+
+### Attach application container
+
+```sh
+docker compose exec app bash
+```
+
+
+### Setup project
+
+```sh
+cargo init
+cargo add postgres --features="with-uuid-1"
+cargo add uuid
+```
+
+### Run
+
+```sh
+cargo run
+```
+
+## References
+
+- [postgres - crates.io: Rust Package Registry](https://crates.io/crates/postgres)
+- [postgres - Rust](https://docs.rs/postgres/latest/postgres/)
+- [Config in postgres::config - Rust](https://docs.rs/postgres/latest/postgres/config/struct.Config.html)
+
diff --git a/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/000_droptables.sql b/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/000_droptables.sql
new file mode 100644
index 00000000..64da37c4
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/000_droptables.sql
@@ -0,0 +1,3 @@
+DROP TABLE IF EXISTS "device";
+DROP TABLE IF EXISTS "user";
+
diff --git a/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/001_create_tables.sql b/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/001_create_tables.sql
new file mode 100644
index 00000000..6c9ff82c
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/001_create_tables.sql
@@ -0,0 +1,10 @@
+CREATE TABLE "user" (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid()
+    , name text NOT NULL
+);
+
+CREATE TABLE "device" (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid()
+    , name text NOT NULL
+    , user_id UUID REFERENCES "user"(id)
+);
diff --git a/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/101_create_test_data.sql b/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/101_create_test_data.sql
new file mode 100644
index 00000000..8780ae38
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/conf/postgres/init.d/101_create_test_data.sql
@@ -0,0 +1,22 @@
+INSERT INTO "user" (id, name)
+    values
+        ('{d35696e8-5aa0-4b35-88cf-ded521b3dede}', 'user1')
+        , ('{d35696e8-5aa0-4b35-88cf-ded521b3dedd}', 'user2')
+        , ('{d35696e8-5aa0-4b35-88cf-ded521b3dedc}', 'user3')
+        , ('{d35696e8-5aa0-4b35-88cf-ded521b3dedb}', 'user4')
+        , ('{d35696e8-5aa0-4b35-88cf-ded521b3deda}', 'user5')
+        ;
+
+INSERT INTO "device" (id, name, user_id)
+    values
+    ('{d35696e8-5aa0-4b35-98cf-ded521b3dede}', 'device11', '{d35696e8-5aa0-4b35-88cf-ded521b3dede}')
+    , ('{d35696e8-5aa0-4b35-98cf-ded521b3dedd}', 'device12', '{d35696e8-5aa0-4b35-88cf-ded521b3dede}')
+    , ('{d35696e8-5aa0-4b35-98cf-ded521b3dedc}', 'device13', '{d35696e8-5aa0-4b35-88cf-ded521b3dede}')
+    , ('{d35696e8-5aa0-4b35-98cf-ded521b3dedb}', 'device14', '{d35696e8-5aa0-4b35-88cf-ded521b3dede}')
+    , ('{d35696e8-5aa0-4b35-98cf-ded521b3deda}', 'device15', '{d35696e8-5aa0-4b35-88cf-ded521b3dede}')
+    , ('{d35696e8-5aa0-4b35-a8cf-ded521b3dede}', 'device21', '{d35696e8-5aa0-4b35-88cf-ded521b3dedd}')
+    , ('{d35696e8-5aa0-4b35-a8cf-ded521b3dedd}', 'device22', '{d35696e8-5aa0-4b35-88cf-ded521b3dedd}')
+    , ('{d35696e8-5aa0-4b35-a8cf-ded521b3dedc}', 'device23', '{d35696e8-5aa0-4b35-88cf-ded521b3dedd}')
+    , ('{d35696e8-5aa0-4b35-a8cf-ded521b3dedb}', 'device24', '{d35696e8-5aa0-4b35-88cf-ded521b3dedd}')
+    , ('{d35696e8-5aa0-4b35-a8cf-ded521b3deda}', 'device25', '{d35696e8-5aa0-4b35-88cf-ded521b3dedd}')
+    ;
diff --git a/rust/sql/postgres/postgres/firststep/docker-compose.yaml b/rust/sql/postgres/postgres/firststep/docker-compose.yaml
new file mode 100644
index 00000000..863c5c9d
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/docker-compose.yaml
@@ -0,0 +1,35 @@
+version: '3'
+
+services:
+  app:
+    image: rust
+    init: true
+    environment:
+      POSTGRES_HOST: "postgres:5432"
+      POSTGRES_DB: "postgres"
+      POSTGRES_USER: "postgres"
+      POSTGRES_PASSWORD: "password"
+    command:
+      - sleep
+      - infinity
+    volumes:
+      - "./project:/project"
+    working_dir: /project
+  postgres:
+    image: postgres:15
+    init: true
+    restart: always
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./conf/postgres/init.d/:/docker-entrypoint-initdb.d
+    environment:
+      POSTGRES_DB: "postgres"
+      POSTGRES_USER: "postgres"
+      POSTGRES_PASSWORD: "password"
+    ports:
+      - "0.0.0.0:5432:5432"
+
+volumes:
+  postgres_data:
+    driver: local
+
diff --git a/rust/sql/postgres/postgres/firststep/project/.gitignore b/rust/sql/postgres/postgres/firststep/project/.gitignore
new file mode 100644
index 00000000..ea8c4bf7
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/project/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/rust/sql/postgres/postgres/firststep/project/Cargo.lock b/rust/sql/postgres/postgres/firststep/project/Cargo.lock
new file mode 100644
index 00000000..701bbadd
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/project/Cargo.lock
@@ -0,0 +1,699 @@
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diff --git a/rust/sql/postgres/postgres/firststep/project/Cargo.toml b/rust/sql/postgres/postgres/firststep/project/Cargo.toml
new file mode 100644
index 00000000..e1495ed5
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/project/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "firststep"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+postgres = { version = "0.19.4", features = ["with-uuid-1"] }
+uuid = "1.2.2"
+
diff --git a/rust/sql/postgres/postgres/firststep/project/src/main.rs b/rust/sql/postgres/postgres/firststep/project/src/main.rs
new file mode 100644
index 00000000..5461d288
--- /dev/null
+++ b/rust/sql/postgres/postgres/firststep/project/src/main.rs
@@ -0,0 +1,72 @@
+use postgres::{Client, NoTls, Row};
+use std::fmt;
+use uuid::Uuid;
+
+struct User {
+    id: Uuid,
+    name: Box<str>,
+}
+
+impl fmt::Debug for User {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "User {{ id:{}, name:{} }}", self.id, self.name)?;
+        Ok(())
+    }
+}
+
+fn main() {
+    // 接続情報組み立て
+    // See: https://docs.rs/postgres/latest/postgres/config/struct.Config.html
+    let url = format!(
+        "host={} port=5432 user={} password={} dbname={}",
+        "postgres", "postgres", "password", "postgres"
+    );
+
+    // クライアント作成
+    let mut client = Client::connect(&url, NoTls).unwrap();
+
+    // クエリを発行
+    let result: Vec<Row> = client.query("SELECT id, name FROM \"user\"", &[]).unwrap();
+
+    // Row をひとつずつ取り出して処理
+    for row in result {
+        // オブジェクトに詰め替えて表示
+        let user = User {
+            id: row.get("id"),
+            name: row.get("name"),
+        };
+        println!("{:?}", user);
+
+        // Row 情報表示
+        println!("{:?}", row);
+
+        // Column 情報を抜き出して、その情報に応じて表示していくやつ
+        for (index, column) in row.columns().iter().enumerate() {
+            let col_name = column.name();
+            let col_type = column.type_();
+
+            match col_type {
+                &postgres::types::Type::UUID => {
+                    println!(
+                        "Column {{ col_name: {}, col_type: {}, value: {} }}",
+                        col_name,
+                        col_type,
+                        row.get::<usize, Uuid>(index).to_string()
+                    )
+                }
+                &postgres::types::Type::TEXT => {
+                    println!(
+                        "Column {{ col_name: {}, col_type: {}, value: {} }}",
+                        col_name,
+                        col_type,
+                        row.get::<usize, &str>(index).to_string()
+                    )
+                }
+                // TODO: postgres が提供している型を全部追加
+                _ => todo!(),
+            }
+        }
+
+        println!();
+    }
+}