import psycopg2

conn = psycopg2.connect(
    host="localhost",
    port=5432,
    database="buchhaltung",
    user="postgres",
    password="postgres"
)
cursor = conn.cursor()

# Pruefe Schema
cursor.execute("SELECT column_name, data_type FROM information_schema.columns WHERE table_name = 'kredit_zahlungen'")
columns = cursor.fetchall()
print("Spalten in kredit_zahlungen:")
for col in columns:
    print(f"  {col[0]}: {col[1]}")

# Zeige einen Beispiel-Datensatz
cursor.execute("SELECT * FROM kredit_zahlungen LIMIT 1")
row = cursor.fetchone()
print(f"\nBeispiel-Datensatz:")
for i, col in enumerate(columns):
    if i < len(row):
        print(f"  [{i}] {col[0]} = {row[i]} (Typ: {type(row[i])})")

cursor.close()
conn.close()