feat: remove postgres

.devcontainer/devcontainer.json

@@ -11,7 +11,7 @@
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// This can be used to network with other containers or the host.
-	"forwardPorts": [5432,5433],
+	"forwardPorts": [/*5432,*/5433],
 
 	// Use 'postCreateCommand' to run commands after the container is created.
 	// "postCreateCommand": "pip install --user -r requirements.txt",
@@ -25,6 +25,7 @@
 			],
 			"settings": {
 				"sqltools.connections": [
+					/*
 					{
 						"previewLimit": 50,
 						"server": "localhost",
@@ -35,6 +36,7 @@
 						"username": "postgres",
 						"password": "postgres"
 					},
+					*/
 					{
 						"previewLimit": 50,
 						"server": "localhost",

.devcontainer/docker-compose.yml

@@ -18,16 +18,16 @@ services:
     #network_mode: service:postgres
     network_mode: host
 
-  postgres:
-    image: postgres:latest
-    restart: unless-stopped
-    volumes:
-      - postgres-data:/var/lib/postgresql/data
-    environment:
-      POSTGRES_USER: postgres
-      POSTGRES_DB: postgres
-      POSTGRES_PASSWORD: postgres
-    network_mode: host
+  #postgres:
+  #  image: postgres:latest
+  #  restart: unless-stopped
+  #  volumes:
+  #    - postgres-data:/var/lib/postgresql/data
+  #  environment:
+  #    POSTGRES_USER: postgres
+  #    POSTGRES_DB: postgres
+  #    POSTGRES_PASSWORD: postgres
+  #  network_mode: host
 
   xtdb:
     image: ghcr.io/xtdb/xtdb-standalone-ea:latest

sql/setup_database.sql

@@ -1,20 +1,10 @@
--- @conn postgres
-
--- @block Create a table
-CREATE TABLE employees (
-    id SERIAL PRIMARY KEY,
-    name VARCHAR(100),
-    department VARCHAR(100),
-    salary INTEGER
-);
+-- @conn xtdb
 
+-- 👇 Click here 👇
 -- @block Insert sample data
-INSERT INTO employees (name, department, salary) VALUES
-    ('John Doe', 'IT', 75000),
-    ('Jane Smith', 'HR', 65000),
-    ('Bob Johnson', 'Finance', 80000),
-    ('Alice Brown', 'Marketing', 70000),
-    ('Charlie Davis', 'IT', 85000);
-
--- @block
-DROP TABLE employees
+INSERT INTO employees (_id, name, department, salary) VALUES
+(1, 'John Doe', 'IT', 75000),
+(2, 'Jane Smith', 'HR', 65000),
+(3, 'Bob Johnson', 'Finance', 80000),
+(4, 'Alice Brown', 'Marketing', 70000),
+(5, 'Charlie Davis', 'IT', 85000);

sql/workshop_exercises.sql

@@ -1,41 +1,35 @@
--- @conn postgres
+-- @conn xtdb
 
--- @block
 -- Exercise 1: Basic SELECT
 -- Retrieve all employees from the IT department
-SELECT * FROM employees WHERE department = 'IT';
-
 -- @block
+SELECT * FROM employees;
+
 -- Exercise 2: Aggregation
 -- Calculate the average salary for each department
+-- @block
 SELECT department, AVG(salary) as avg_salary
 FROM employees
 GROUP BY department;
 
--- @block
 -- Exercise 3: Joins (assuming we add another table)
 -- Create a departments table
-CREATE TABLE departments (
-    id SERIAL PRIMARY KEY,
-    name VARCHAR(100),
-    budget INTEGER
-);
-
-INSERT INTO departments (name, budget) VALUES
-    ('IT', 500000),
-    ('HR', 300000),
-    ('Finance', 700000),
-    ('Marketing', 400000);
-
 -- @block
+INSERT INTO departments (_id, name, budget) VALUES
+    (1, 'IT', 500000),
+    (2, 'HR', 300000),
+    (3, 'Finance', 700000),
+    (4, 'Marketing', 400000);
+
 -- Join employees with departments to get department budgets
+-- @block
 SELECT e.name, e.department, d.budget
 FROM employees e
 JOIN departments d ON e.department = d.name;
 
--- @block
 -- Exercise 4: Subqueries
 -- Find employees who earn more than the average salary
+-- @block
 SELECT name, salary
 FROM employees
 WHERE salary > (SELECT AVG(salary) FROM employees);