diff --git a/postgres-language-server.jsonc b/postgres-language-server.jsonc
index f2a7801..1360d3a 100644
--- a/postgres-language-server.jsonc
+++ b/postgres-language-server.jsonc
@@ -19,7 +19,7 @@
     "enabled": true
   },
   "format": {
-    "enabled": false
+    "enabled": true
   },
   "pglinter": {
     "enabled": false
diff --git a/postgres/00_tables.sql b/postgres/00_tables.sql
index f4132ef..bf8f01a 100644
--- a/postgres/00_tables.sql
+++ b/postgres/00_tables.sql
@@ -1,49 +1,56 @@
-CREATE TABLE user_account (
-    id uuid UNIQUE NOT NULL DEFAULT uuidv7(),
-    full_name text NOT NULL,
-    password_hash text NOT NULL,
-    email text UNIQUE NOT NULL CHECK (email LIKE '%@%'),
-    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    is_active boolean NOT NULL DEFAULT TRUE,
-    PRIMARY KEY (id)
+create table user_account (
+  id uuid unique not null default uuidv7(),
+  full_name text not null,
+  password_hash text not null,
+  email text
+  unique
+  not null
+  check (email like '%@%'),
+  created_at timestamp
+  not null
+  default current_timestamp,
+  is_active boolean not null default true,
+  primary key (id)
 );
 
-CREATE TABLE segment (
-    id uuid UNIQUE NOT NULL DEFAULT uuidv7(),
-    name text NOT NULL,
-    description text
+create table segment (
+  id uuid unique not null default uuidv7(),
+  name text not null,
+  description text
 );
 
-CREATE TABLE startup (
-    id uuid UNIQUE NOT NULL DEFAULT uuidv7(),
-    segment_id uuid REFERENCES segment(id),
-    name text NOT NULL,
-    cnpj text UNIQUE NOT NULL CHECK (length(cnpj) = 14),
-    description text,
-    city text NOT NULL,
-    state text NOT NULL,
-    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    PRIMARY KEY (id)
+create table startup (
+  id uuid unique not null default uuidv7(),
+  segment_id uuid references segment (id),
+  name text not null,
+  cnpj text
+  unique
+  not null
+  check (length(cnpj) = 14),
+  description text,
+  city text not null,
+  state text not null,
+  created_at timestamp
+  not null
+  default current_timestamp,
+  primary key (id)
 );
 
-CREATE TABLE startup_membership (
-    user_id uuid REFERENCES user_account(id) ON DELETE CASCADE,
-    startup_id uuid REFERENCES startup(id) ON DELETE CASCADE,
-    PRIMARY KEY (user_id, startup_id)
+create table startup_membership (
+  user_id uuid
+  references user_account (id) on DELETE cascade,
+  startup_id uuid
+  references startup (id) on DELETE cascade,
+  primary key (user_id, startup_id)
 );
 
-CREATE TYPE investor_kind AS enum (
-    'angel',
-    'venture',
-    'individual',
-    'institutional'
-);
+create type investor_kind as enum ('angel', 'venture', 'individual', 'institutional');
 
-CREATE TABLE investor (
-    id uuid UNIQUE NOT NULL DEFAULT uuidv7(),
-    user_id uuid REFERENCES user_account(id),
-    segment_id uuid REFERENCES segment(id),
-    kind investor_kind NOT NULL,
-    public_profile boolean NOT NULL DEFAULT TRUE,
-    PRIMARY KEY (id)
-)
+create table investor (
+  id uuid unique not null default uuidv7(),
+  user_id uuid references user_account (id),
+  segment_id uuid references segment (id),
+  kind investor_kind not null,
+  public_profile boolean not null default true,
+  primary key (id)
+);
diff --git a/postgres/01_fuctions.sql b/postgres/01_fuctions.sql
new file mode 100644
index 0000000..43b3564
--- /dev/null
+++ b/postgres/01_fuctions.sql
@@ -0,0 +1,13 @@
+create or replace function public.get_startup_members(p_startup_id uuid)
+returns table (
+  user_uuid uuid
+)
+language plpgsql
+as $function$
+begin
+  return query
+  SELECT distinct sm.user_id
+  from public.startup_membership as sm
+  where sm.startup_id = p_startup_id;
+END;
+$function$;