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.bolt/supabase_discarded_migrations/0003_winter_morning.sql

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+/*
+  # Employee Management System Schema
+
+  1. Table Structure
+    - Creates `employees` table with:
+      - `username` (text, primary key)
+      - `last_name` (text, not null)
+      - `department` (text, not null)
+      - `last_login_timestamp` (timestamptz)
+      - `created_at` (timestamptz with default)
+
+  2. Security
+    - Enables Row Level Security (RLS)
+    - Adds policies for:
+      - Reading own data
+      - Updating own data
+
+  3. Performance
+    - Adds indexes on frequently queried columns
+*/
+
+-- Drop existing table and dependencies if they exist
+DROP TABLE IF EXISTS employees CASCADE;
+
+-- Create employees table
+CREATE TABLE employees (
+  username text PRIMARY KEY,
+  last_name text NOT NULL,
+  department text NOT NULL,
+  last_login_timestamp timestamptz,
+  created_at timestamptz DEFAULT now()
+);
+
+-- Enable RLS
+ALTER TABLE employees ENABLE ROW LEVEL SECURITY;
+
+-- Create policies
+CREATE POLICY "Users can read own data"
+  ON employees
+  FOR SELECT
+  TO authenticated
+  USING (auth.uid()::text = username);
+
+CREATE POLICY "Users can update their own data"
+  ON employees
+  FOR UPDATE
+  TO authenticated
+  USING (auth.uid()::text = username)
+  WITH CHECK (auth.uid()::text = username);
+
+-- Add performance indexes
+CREATE INDEX idx_employees_username ON employees(username);
+CREATE INDEX idx_employees_last_login ON employees(last_login_timestamp);
+
+-- Insert default admin user
+INSERT INTO employees (username, last_name, department)
+VALUES (
+  'admin',
+  'Administrator',
+  'IT'
+) ON CONFLICT (username) DO UPDATE SET
+  last_name = EXCLUDED.last_name,
+  department = EXCLUDED.department;