Initial commit: Organized PTC project structure with .gitignore and README

db/sample_queries.sql

@@ -0,0 +1,50 @@
+set search_path = budget_app, public;
+
+-- 1. 회사 목록
+select id, code, name from companies;
+
+-- 2. 프로젝트 목록
+select project_code, project_name, status, contract_amount
+from projects
+order by project_code;
+
+-- 3. 프로젝트별 월 예산 대비 실적
+select
+    p.project_code,
+    p.project_name,
+    v.month_no,
+    a.code as account_code,
+    a.name as account_name,
+    v.budget_amount,
+    v.actual_amount,
+    v.variance_amount,
+    v.execution_rate
+from vw_budget_vs_actual_monthly v
+join projects p on p.id = v.project_id
+join accounts a on a.id = v.account_id
+order by p.project_code, v.month_no, a.code;
+
+-- 4. 프로젝트 손익 요약
+select
+    project_code,
+    project_name,
+    revenue_amount,
+    cost_amount,
+    profit_amount,
+    profit_rate
+from vw_project_profit_summary
+order by project_code;
+
+-- 5. 발주 요청과 발주 현황
+select
+    pr.request_no,
+    po.order_no,
+    p.project_code,
+    v.name as vendor_name,
+    pr.total_amount as request_amount,
+    po.total_amount as order_amount
+from purchase_requests pr
+left join purchase_orders po on po.purchase_request_id = pr.id
+left join projects p on p.id = pr.project_id
+left join vendors v on v.id = pr.vendor_id
+order by pr.request_no;