diff --git a/Cargo.lock b/Cargo.lock
index 3d8f336..00761aa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,16 +8,9 @@ version = "1.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34ac096ce696dc2fcabef30516bb13c0a68a11d30131d3df6f04711467681b04"
 
-[[package]]
-name = "byteorder"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
-
 [[package]]
 name = "csv"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "byteorder",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 3928faa..9c93cee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,5 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-byteorder = "1.5"
 anyhow = "1.0"
diff --git a/examples/join/data/left.csv b/examples/join/data/left.csv
new file mode 100644
index 0000000..6734900
--- /dev/null
+++ b/examples/join/data/left.csv
@@ -0,0 +1,3 @@
+name	value
+a	3
+b	4
diff --git a/examples/join/data/right.csv b/examples/join/data/right.csv
new file mode 100644
index 0000000..a94b7df
--- /dev/null
+++ b/examples/join/data/right.csv
@@ -0,0 +1,3 @@
+name	cowdung
+a	2
+c	42
diff --git a/examples/join/main.rs b/examples/join/main.rs
new file mode 100644
index 0000000..0eb9532
--- /dev/null
+++ b/examples/join/main.rs
@@ -0,0 +1,18 @@
+use csv::Table;
+
+fn main() {
+    let left = Table::from_csv(include_str!("data/left.csv"), "\t");
+    let right = Table::from_csv(include_str!("data/right.csv"), "\t");
+    println!("left:");
+    left.select("*");
+    println!("\nright:");
+    right.select("*");
+    println!("\njoin on name:");
+    left.left_join(&right, "name", "name", false)
+        .select("name, cowdung, value");
+    println!("\nleft join on name:");
+    left.left_join(&right, "name", "name", true).select("*");
+    println!("\nright join on name:");
+    left.right_join(&right, "name", "name", true)
+        .select("name,cowdung,value");
+}
diff --git a/examples/orderby/data/table.csv b/examples/orderby/data/table.csv
new file mode 100644
index 0000000..9cb6b8b
--- /dev/null
+++ b/examples/orderby/data/table.csv
@@ -0,0 +1,4 @@
+name	value
+a	3
+q	11
+b	4
diff --git a/examples/orderby/main.rs b/examples/orderby/main.rs
new file mode 100644
index 0000000..4aa8c7d
--- /dev/null
+++ b/examples/orderby/main.rs
@@ -0,0 +1,12 @@
+use csv::Table;
+
+fn main() {
+    let table = Table::from_csv(include_str!("data/table.csv"), "\t");
+    println!("not ordered:");
+    table.select("*");
+
+    println!("order by name ascending:");
+    table.order_by("name").select("*");
+
+    println!("\nTODO descending");
+}
diff --git a/src/groupby.rs b/src/groupby.rs
index cb89f41..013430f 100644
--- a/src/groupby.rs
+++ b/src/groupby.rs
@@ -1,19 +1,19 @@
-use crate::Table;
+// use crate::Table;
 
-impl Table {
-    pub fn group_by(&self, select_expression: &str, group_by_expression: &str) -> Table {
-        let table = Table::new("");
-
-        table
-    }
-}
-
-// fn parse_select(select: &str){
+// impl Table {
+//     pub fn group_by(&self, select_expression: &str, group_by_expression: &str) -> Table {
+//         let table = Table::new("");
 
+//         table
+//     }
 // }
 
-// enum Aggregation {
-//     Sum(String),
-//     Max(String),
-//     Min(String),
-// }
+// // fn parse_select(select: &str){
+
+// // }
+
+// // enum Aggregation {
+// //     Sum(String),
+// //     Max(String),
+// //     Min(String),
+// // }
diff --git a/src/main.rs b/src/main.rs
deleted file mode 100644
index 4510820..0000000
--- a/src/main.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-use csv::Table;
-
-fn main() {
-    let companies = Table::from_csv(include_str!("data/companies.csv"), "\t");
-    let remove = Table::from_csv(include_str!("data/remove.csv"), "\t");
-
-    // companies.pretty_print("*");
-    // remove.pretty_print("*");
-    let left = Table::from_csv(include_str!("data/left.csv"), "\t");
-    let right = Table::from_csv(include_str!("data/right.csv"), "\t");
-    // left.pretty_print("*");
-    // right.pretty_print("*");
-    let join1 = left.left_join(&right, "name", "name", true);
-    let join2 = left.right_join(&right, "name", "name", true);
-    //
-    companies
-        .left_join(&remove, "aisAccountID", "aisaccountid", false)
-        .order_by("aisAccountID")
-        .select("aisAccountID");
-    // join2.pretty_print("*");
-}