diff --git a/x_read.py b/x_read.py
index 1c7255ead..6000e8134 100644
--- a/x_read.py
+++ b/x_read.py
@@ -11,7 +11,7 @@ def turbodbc_read_sql(
 
 
 def mssql_connect_turbodbc() -> turbodbc.connection.Connection:
-    odbc_string = "Driver={libtdsodbc.so};Server=localhost,1433;Database=turbodbc;Encrypt=yes;TrustServerCertificate=no;UID=sa;PWD=QuantCo123"
+    odbc_string = Path("./conn_str_odbc.txt").read_text(encoding="utf-8")
     conn_string_components = {
         x.split("=")[0].lower(): x.split("=")[1] for x in odbc_string.split(";")
     }
@@ -23,7 +23,23 @@ def mssql_connect_turbodbc() -> turbodbc.connection.Connection:
     )
 
 
+query_ops = Path("./query_ops.sql").read_text(encoding="utf-8")
+query_icd = Path("./query_icd.sql").read_text(encoding="utf-8")
+
+which = input("Which query: ")
+query = (
+    query_ops if which == "ops" else
+    query_icd if which == "icd" else
+    f"SELECT * FROM simeon_benchmark_turbodbc.dbo.{which}"
+)
+if not query:
+    raise ValueError(which)
+print("Using", query)
+
 connection = mssql_connect_turbodbc()
 start = perf_counter()
-turbodbc_read_sql("SELECT * FROM turbodbc.dbo.single_big", connection)
+res = turbodbc_read_sql(query, connection)
 print("Elapsed seconds:", perf_counter() - start)
+
+tag = input("Output tag: ")
+res.to_parquet(f"./{which}_{tag}.parquet")
diff --git a/x_write.py b/x_write.py
index a7977a325..0d20176c5 100644
--- a/x_write.py
+++ b/x_write.py
@@ -1,21 +1,53 @@
 import sqlalchemy as sa
 
+from typing import List
+
+
 print("Hey")
 
-ROWS = 1_000_000
 AT_ONCE = 1
 
-eng = sa.create_engine("mssql+pyodbc://sa:QuantCo123@localhost:1433/turbodbc?driver=libtdsodbc.so")
+eng = sa.create_engine(Path("./x_conn_str_sa.txt").read_text(encoding="utf-8"))
+
+
+def writeit(table_name: str, row_values: List[str], types: List[str], nrows: str):
+    with eng.begin() as transaction:
+        transaction.execute(sa.text(f"DROP TABLE IF EXISTS {table_name}"))
+
+        stmt_types = ",\n".join([f"v_{idx} {type_}" for idx, type_ in enumerate(types)])
+        transaction.execute(sa.text(f"CREATE TABLE {table_name} ({stmt_types})"))
+
+        last = None
+        for idx in range(0, nrows, AT_ONCE):
+            percentage = int(idx/nrows * 100)
+            if percentage % 10 == 0 and percentage != last:
+                last = percentage
+                print(percentage)
+
+            stmt_values = ",".join([f"'{value}'" for value in row_values])
+            param = ", ".join([f"({stmt_values}) "] * AT_ONCE)
+            transaction.execute(sa.text(f"INSERT INTO {table_name} VALUES {param}"))
+
 
-with eng.begin() as transaction:
-    transaction.execute(sa.text("DELETE FROM single_big"))
-    last = None
-    for idx in range(0, ROWS, AT_ONCE):
-        percentage = int(idx/ROWS * 100)
-        if percentage % 10 == 0 and percentage != last:
-            last = percentage
-            print(percentage)
+which = input("Which input: ")
 
-        value = "a" * 8_000
-        param = ", ".join([f"('{value}') "] * AT_ONCE)
-        transaction.execute(sa.text(f"INSERT INTO single_big VALUES {param}"))
+if which == "varchar":
+    writeit("varchar_100k", ["a" * 8000], ["VARCHAR(8000)"], 100_000)
+elif which == "char":
+    writeit("char_10m", ["a" * 80], ["CHAR(80)"], 10_000_000)
+elif which == "tinyint":
+    writeit("tinyint_50m", [123], ["TINYINT"], 50_000_000)
+elif which == "date":
+    writeit("date_20m", ["2023-10-04"], ["DATE"], 20_000_000)
+elif which == "all":
+    writeit("all_100k", ["v" * 8000, "c" * 8000, 123, "2023-10-04"], ["VARCHAR(8000)", "CHAR(8000)", "TINYINT", "DATE"], 100_000)
+elif which == "varchar_many":
+    writeit("varchar_many_10k", ["a" * 80] * 100, ["VARCHAR(80)"] * 100, 10_000)
+elif which == "tinyint_many":
+    writeit("tinyint_many_100k", [123] * 100, ["TINYINT"] * 100, 100_000)
+elif which == "date_many":
+    writeit("date_many_100k", ["2023-10-04"] * 100, ["DATE"] * 100, 100_000)
+elif which == "char_many":
+    writeit("char_many_100k", ["a" * 80] * 100, ["CHAR(80)"] * 100, 100_000)
+else:
+    raise ValueError(which)