diff --git a/melli/excel2sql.py b/melli/excel2sql.py
index 4aad133..a325b7b 100755
--- a/melli/excel2sql.py
+++ b/melli/excel2sql.py
@@ -1,7 +1,17 @@
 #!/bin/python3
 import pandas as pd
+import numpy as np
 from argparse import ArgumentParser
 
+def wrap_types(val):
+    if np.isnan(val):
+        print("NaN FOUND")
+        val = "NULL"
+    if type(val) in [str, pd._libs.tslibs.timestamps.Timestamp]:
+        return f"'{val}'"
+    else:
+        return val
+
 p = ArgumentParser()
 # action store_true is for flags
 p.add_argument("-i", "--input", nargs="+", help="Path to input excel file")
@@ -22,27 +32,29 @@ else:
 print(f'Input: {in_file_path}\nOutput: {out_file_path}')
 
 in_file = pd.ExcelFile(in_file_path)
+print(in_file.parse("Datei", skiprows=1).head())
 
 with open(out_file_path, "w") as of:
     for sheet in in_file.sheet_names:
-        curr_sheet = in_file.parse(sheet)
+        curr_meta = in_file.parse(sheet, nrows=1, header=None)
+        curr_sheet = in_file.parse(sheet, header=1)
+        curr_meta = curr_meta[0][0].split("#")
+        db = curr_meta[0]
+        table_prefix = curr_meta[1]
+        table_suffix = sheet
         # One line is one test subject/object
         for line in curr_sheet.iterrows():
             indices = line[1].index
             values = line[1].values
-            # print(indices, values)
             cols = ""
             vals = ""
             for i in range(len(indices)):
+                # print(type(values[i]), ": ", values[i])
                 if i != 0:
                     cols += f", {indices[i]}"
-                    vals += f", {values[i]}"
+                    vals += f", {wrap_types(values[i])}"
                 else:
                     cols += f"{indices[i]}"
-                    vals += f"{values[i]}"
-            # USE $DB
+                    vals += f"{wrap_types(values[i])}"
             # INSERT INTO $DB.$TABLE ($COL1, $COL2, ...) VALUES ($VAL1, $VAL2, ...)
-            db_table = sheet.split(".")
-            db = db_table[0]
-            table = db_table[1]
-            of.write(f"INSERT INTO {db}.{table} ({cols}) VALUES ({vals})\n")
+            of.write(f'INSERT INTO "{db}"."{table_prefix}.{table_suffix}" ({cols}) VALUES ({vals})\n')