prepare better DB interaction with reload

prototypes/db_access.py

@@ -72,6 +72,17 @@ df.row(0, named=True)
 db.df_crm_master.estimated_size("mb")
 
 
+# %%
+# // CRM Ansprechpartner
+df = db.df_contact_person.filter(pl.col.ma_id == 410)
+df = df.with_columns(pl.col(pl.String).str.replace_all(r"[\r\t\n]", " ").str.strip_chars(" "))
+df
+
+# %%
+tuple(zip(df["ma_id"], df["an_id"]))
+
+# %%
+db.df_crm_master
 # %%
 # // CRM Nutzer
 stmt = sql.select(db.ext_crm_nutzer).limit(20)