diff --git a/.github/workflows/input-postgresql.yml b/.github/workflows/input-postgresql.yml
index a842512..b70ee46 100644
--- a/.github/workflows/input-postgresql.yml
+++ b/.github/workflows/input-postgresql.yml
@@ -43,7 +43,17 @@ jobs:
     - name: List files under the Embulk home directory
       run: ls -laR "$HOME/.embulk/"
 
-    - name: Access PostgreSQL
-      run: psql -h localhost -U postgres -d postgres -c "\l"
+    - name: Create a table in PostgreSQL
+      run: psql -h localhost -U postgres -d postgres -f "input-postgresql/create-table.sql"
+      env:
+        PGPASSWORD: postgres
+
+    - name: Insert data in PostgreSQL
+      run: psql -h localhost -U postgres -d postgres -f "input-postgresql/insert-data.sql"
+      env:
+        PGPASSWORD: postgres
+
+    - name: Show data in PostgreSQL
+      run: psql -h localhost -U postgres -d postgres -c "select * from test;"
       env:
         PGPASSWORD: postgres
diff --git a/input-postgresql/create-table.sql b/input-postgresql/create-table.sql
new file mode 100644
index 0000000..9d8ff36
--- /dev/null
+++ b/input-postgresql/create-table.sql
@@ -0,0 +1,4 @@
+CREATE TABLE test (
+  id integer,
+  name text
+);
diff --git a/input-postgresql/insert-data.sql b/input-postgresql/insert-data.sql
new file mode 100644
index 0000000..f89b1ba
--- /dev/null
+++ b/input-postgresql/insert-data.sql
@@ -0,0 +1,7 @@
+INSERT INTO test (id, name) VALUES
+  (1, 'Alpha'),
+  (2, 'Bravo'),
+  (3, 'Charlie'),
+  (4, 'Delta'),
+  (5, 'Echo'),
+  (6, 'Foxtrot');