diff --git a/.github/workflows/chatops-migrate.yml b/.github/workflows/chatops-migrate.yml
index 04bb4ce..fbc6d9d 100644
--- a/.github/workflows/chatops-migrate.yml
+++ b/.github/workflows/chatops-migrate.yml
@@ -5,10 +5,10 @@ on:
     types: [created]
 
 env:
-  BYTEBASE_URL: https://demo.bytebase.com
+  BYTEBASE_URL: https://valid-just-tadpole.ngrok-free.app
   BYTEBASE_SERVICE_ACCOUNT: api@service.bytebase.com # set service account via environment variable
   BYTEBASE_SERVICE_ACCOUNT_SECRET: ${{ secrets.BYTEBASE_SERVICE_ACCOUNT_SECRET }} # set service account secret via environment variable
-  BYTEBASE_PROJECT: "projects/hr"
+  BYTEBASE_PROJECT: "projects/project-sample"
   FILE_PATTERN: "migrations-semver/*.sql"
 
 jobs:
diff --git a/.github/workflows/declarative-release-action.yml b/.github/workflows/declarative-release-action.yml
index e5e1c54..b0ea245 100644
--- a/.github/workflows/declarative-release-action.yml
+++ b/.github/workflows/declarative-release-action.yml
@@ -14,10 +14,10 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  BYTEBASE_URL: https://demo.bytebase.com
+  BYTEBASE_URL: https://valid-just-tadpole.ngrok-free.app
   BYTEBASE_SERVICE_ACCOUNT: api@service.bytebase.com # set service account via environment variable
   BYTEBASE_SERVICE_ACCOUNT_SECRET: ${{ secrets.BYTEBASE_SERVICE_ACCOUNT_SECRET }} # set service account secret via environment variable
-  BYTEBASE_PROJECT: "projects/hr"
+  BYTEBASE_PROJECT: "projects/project-sample"
 
 jobs:
   build:
diff --git a/.github/workflows/declarative-sql-review-action.yml b/.github/workflows/declarative-sql-review-action.yml
index b32edad..c27e616 100644
--- a/.github/workflows/declarative-sql-review-action.yml
+++ b/.github/workflows/declarative-sql-review-action.yml
@@ -20,10 +20,10 @@ jobs:
       - name: Check release
         env:
             GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # set GITHUB_TOKEN because the 'Check release' step needs it to comment the pull request with check results.
-            BYTEBASE_URL: https://demo.bytebase.com
+            BYTEBASE_URL: https://valid-just-tadpole.ngrok-free.app
             BYTEBASE_SERVICE_ACCOUNT: api@service.bytebase.com # set service account via environment variable
             BYTEBASE_SERVICE_ACCOUNT_SECRET: ${{ secrets.BYTEBASE_SERVICE_ACCOUNT_SECRET }} # set service account secret via environment variable
-            BYTEBASE_PROJECT: "projects/hr"
+            BYTEBASE_PROJECT: "projects/project-sample"
             BYTEBASE_TARGETS: "instances/prod-sample-instance/databases/hr_prod"
             FILE_PATTERN: "schema/*.sql"
         run: |
diff --git a/.github/workflows/release-action.yml b/.github/workflows/release-action.yml
index 3270f27..6a38960 100644
--- a/.github/workflows/release-action.yml
+++ b/.github/workflows/release-action.yml
@@ -8,10 +8,10 @@ on:
       - "migrations-semver/*.sql"
 
 env:
-  BYTEBASE_URL: https://demo.bytebase.com
+  BYTEBASE_URL: https://valid-just-tadpole.ngrok-free.app
   BYTEBASE_SERVICE_ACCOUNT: api@service.bytebase.com # set service account via environment variable
   BYTEBASE_SERVICE_ACCOUNT_SECRET: ${{ secrets.BYTEBASE_SERVICE_ACCOUNT_SECRET }} # set service account secret via environment variable
-  BYTEBASE_PROJECT: "projects/hr"
+  BYTEBASE_PROJECT: "projects/project-sample"
 
 jobs:
   build:
diff --git a/.github/workflows/sql-review-action.yml b/.github/workflows/sql-review-action.yml
index d377bab..bcf1ee0 100644
--- a/.github/workflows/sql-review-action.yml
+++ b/.github/workflows/sql-review-action.yml
@@ -20,10 +20,10 @@ jobs:
       - name: Check release
         env:
             GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # set GITHUB_TOKEN because the 'Check release' step needs it to comment the pull request with check results.
-            BYTEBASE_URL: https://demo.bytebase.com
+            BYTEBASE_URL: https://valid-just-tadpole.ngrok-free.app
             BYTEBASE_SERVICE_ACCOUNT: api@service.bytebase.com # set service account via environment variable
             BYTEBASE_SERVICE_ACCOUNT_SECRET: ${{ secrets.BYTEBASE_SERVICE_ACCOUNT_SECRET }} # set service account secret via environment variable
-            BYTEBASE_PROJECT: "projects/hr"
+            BYTEBASE_PROJECT: "projects/project-sample"
             BYTEBASE_TARGETS: "instances/prod-sample-instance/databases/hr_prod"
             FILE_PATTERN: "migrations-semver/*.sql"
         run: |
diff --git a/migrations-semver/1.0.0_create_t0.sql b/migrations-semver/1.0.0_create_t0.sql
new file mode 100644
index 0000000..9cefa94
--- /dev/null
+++ b/migrations-semver/1.0.0_create_t0.sql
@@ -0,0 +1,4 @@
+CREATE TABLE "public"."t0" (
+    "id" serial PRIMARY KEY,
+    "name" text NOT NULL
+);
\ No newline at end of file
diff --git a/migrations-semver/1.0.0_init.sql b/migrations-semver/1.0.0_init.sql
deleted file mode 100644
index 3d49b78..0000000
--- a/migrations-semver/1.0.0_init.sql
+++ /dev/null
@@ -1,5 +0,0 @@
-CREATE TABLE IF NOT EXISTS users (
-    id SERIAL PRIMARY KEY,
-    name VARCHAR(255) NOT NULL,
-    email VARCHAR(255) NOT NULL UNIQUE
-)
\ No newline at end of file
diff --git a/migrations-semver/1.0.1_init_data_dml.sql b/migrations-semver/1.0.1_init_data_dml.sql
deleted file mode 100644
index 075b74f..0000000
--- a/migrations-semver/1.0.1_init_data_dml.sql
+++ /dev/null
@@ -1,5 +0,0 @@
-INSERT INTO users (
-    id, name, email
-) VALUES (
-    1, 'me', 'me@me.com'
-);
diff --git a/migrations-semver/1.1.1_comment.sql b/migrations-semver/1.1.1_comment.sql
deleted file mode 100644
index c7fca96..0000000
--- a/migrations-semver/1.1.1_comment.sql
+++ /dev/null
@@ -1 +0,0 @@
-ALTER TABLE IF EXISTS users ADD COLUMN IF NOT EXISTS comment VARCHAR(255) NOT NULL DEFAULT '';
\ No newline at end of file
diff --git a/migrations-semver/1.13.0_phone.sql b/migrations-semver/1.13.0_phone.sql
deleted file mode 100644
index e8de331..0000000
--- a/migrations-semver/1.13.0_phone.sql
+++ /dev/null
@@ -1 +0,0 @@
-ALTER TABLE IF EXISTS users ADD COLUMN IF NOT EXISTS phone VARCHAR(255) NOT NULL DEFAULT '';
diff --git a/migrations-semver/1.14.0_email.sql b/migrations-semver/1.14.0_email.sql
deleted file mode 100644
index aefd24d..0000000
--- a/migrations-semver/1.14.0_email.sql
+++ /dev/null
@@ -1 +0,0 @@
-ALTER TABLE IF EXISTS users ADD COLUMN IF NOT EXISTS email VARCHAR(255) NOT NULL DEFAULT '';
diff --git a/migrations-semver/1.3.5_nickname.sql b/migrations-semver/1.3.5_nickname.sql
deleted file mode 100644
index 09eed38..0000000
--- a/migrations-semver/1.3.5_nickname.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- add nickname column for users
-ALTER TABLE IF EXISTS users ADD COLUMN IF NOT EXISTS nickname VARCHAR(255) NOT NULL DEFAULT '';
diff --git a/schema/schema.sql b/schema/schema.sql
index cc6e61e..79d43c8 100644
--- a/schema/schema.sql
+++ b/schema/schema.sql
@@ -50,6 +50,7 @@ CREATE TABLE "public"."employee" (
     "last_name" text NOT NULL,
     "gender" text NOT NULL,
     "hire_date" date NOT NULL,
+    "nickname" text,
     CONSTRAINT "employee_pkey" PRIMARY KEY (emp_no),
     CONSTRAINT "employee_gender_check" CHECK (gender = ANY (ARRAY['M'::text, 'F'::text]))
 );
diff --git a/schema/testschema.sql b/schema/testschema.sql
new file mode 100644
index 0000000..2f30ad3
--- /dev/null
+++ b/schema/testschema.sql
@@ -0,0 +1,7 @@
+CREATE TABLE "public"."testtable" (
+    "id" serial,
+    "name" text NOT NULL,
+    "created_at" timestamptz DEFAULT now(),
+    CONSTRAINT "testtable_pkey" PRIMARY KEY (id)
+);
+