# n8n Postgres Node - Copy & Paste

## SQL Query für Postgres Node
Kopiere diesen SQL-Code in das Query-Feld der n8n Postgres Node:

```sql
SELECT 
    -- Bestellinformationen
    so.external_ref AS "Bestellnummer",
    TO_CHAR(so.order_date, 'YYYY-MM-DD"T"HH24:MI:SS') AS "Bestelldatum",
    TO_CHAR(so.shipping_date, 'YYYY-MM-DD') AS "Versanddatum",
    
    -- Kundenadresse (Lieferadresse)
    COALESCE(ad.first_name, '') AS "Vorname",
    COALESCE(ad.last_name, '') AS "Nachname",
    COALESCE(ad.street, '') AS "Strasse",
    COALESCE(ad.house_number, '') AS "Hausnummer",
    COALESCE(ad.zip, '') AS "PLZ",
    COALESCE(ad.city, '') AS "Stadt",
    COALESCE(ad.country_name, '') AS "Land",
    
    -- Zahlungs- und Betragsinformationen
    COALESCE(pm.code, '') AS "Zahlungsart",
    COALESCE(so.amount_net, 0) AS "Gesamtbetrag_netto",
    COALESCE(so.amount_shipping, 0) AS "Versandkosten",
    COALESCE(so.total_amount, 0) AS "Gesamtbetrag_brutto",
    COALESCE(so.amount_discount, 0) AS "Rabatt",
    
    -- Produktzählungen (nur aktive Produkte)
    COALESCE(SUM(CASE WHEN p.id = 8 THEN a.qty ELSE 0 END), 0) AS "#_ChagaFlaschen",      -- CHAGA (ID 8)
    COALESCE(SUM(CASE WHEN p.id = 5 THEN a.qty ELSE 0 END), 0) AS "#_ReishiFlaschen",     -- 003.01 (ID 5)
    COALESCE(SUM(CASE WHEN p.id = 9 THEN a.qty ELSE 0 END), 0) AS "#_ShiitakeFlaschen",   -- SHIITAKE (ID 9)
    COALESCE(SUM(CASE WHEN p.id = 6 THEN a.qty ELSE 0 END), 0) AS "#_LionsManeFlaschen"   -- 005.02 (ID 6)
    
FROM sales_order so
-- Lieferadresse
LEFT JOIN address ad ON so.party_id = ad.party_id AND ad.type = 'shipping'
-- Zahlungsart
LEFT JOIN payment_method pm ON so.payment_method_id = pm.id
-- Bestellpositionen und Allokationen
LEFT JOIN sales_order_line sol ON so.id = sol.sales_order_id
LEFT JOIN sales_order_line_lot_allocation a ON sol.id = a.sales_order_line_id
-- Produkte (nur aktive)
LEFT JOIN product p ON a.product_id = p.id AND p.status = 'active'

WHERE so.external_ref = $1
GROUP BY so.id, ad.id, pm.id
```

## Query Values (Parameter)
```json
{
  "values": {
    "value": "={{ $json.Bestellnummer }}",
    "string": "={{ $json.Bestellnummer }}"
  }
}
```

## Database Connection
```
Name: ERP Naurua Database
Host: 192.168.1.199
Port: 55432
Database: naurua_erp
User: codex_db_user
Password: Ze90re0KAry8gyJ6eAx0Gf4IelEGI
SSL: Disabled
```

## Options
```json
{
  "maxRows": 1
}
```

## Output Fields
Die Query liefert diese Felder für die Excel-Node:

| Feldname | Typ | Beispiel |
|----------|-----|----------|
| Bestellnummer | String | "10477" |
| Bestelldatum | ISO DateTime | "2026-04-05T23:12:07" |
| Versanddatum | ISO Date | "2026-04-06" |
| Vorname | String | "Irendy" |
| Nachname | String | "Bucio" |
| Strasse | String | "Weingartenstrasse" |
| Hausnummer | String | "5" |
| PLZ | String | "4600" |
| Stadt | String | "Olten" |
| Land | String | "CH" |
| Zahlungsart | String | "" |
| Gesamtbetrag_netto | Number | 49.95 |
| Versandkosten | Number | 4.95 |
| Gesamtbetrag_brutto | Number | 44.91 |
| Rabatt | Number | 9.99 |
| #_ChagaFlaschen | Number | 0 |
| #_ReishiFlaschen | Number | 0 |
| #_ShiitakeFlaschen | Number | 0 |
| #_LionsManeFlaschen | Number | 1.0000 |

## Excel-Node Mapping
Die Excel-Node muss diese Feldnamen exakt übernehmen (Groß-/Kleinschreibung beachten!).