added examples

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",
 ]

Cargo.toml

@@ -4,5 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-byteorder = "1.5"
 anyhow = "1.0"

examples/join/data/left.csv

@@ -0,0 +1,3 @@
+name	value
+a	3
+b	4

examples/join/data/right.csv

@@ -0,0 +1,3 @@
+name	cowdung
+a	2
+c	42

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");
+}

examples/orderby/data/table.csv

@@ -0,0 +1,4 @@
+name	value
+a	3
+q	11
+b	4

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");
+}

src/groupby.rs

@@ -1,19 +1,19 @@
-use crate::Table;
+// use crate::Table;
 
-impl Table {
+// impl Table {
-    pub fn group_by(&self, select_expression: &str, group_by_expression: &str) -> Table {
+//     pub fn group_by(&self, select_expression: &str, group_by_expression: &str) -> Table {
-        let table = Table::new("");
+//         let table = Table::new("");
-
-        table
-    }
-}
-
-// fn parse_select(select: &str){
 
+//         table
+//     }
 // }
 
-// enum Aggregation {
+// // fn parse_select(select: &str){
-//     Sum(String),
+
-//     Max(String),
+// // }
-//     Min(String),
+
-// }
+// // enum Aggregation {
+// //     Sum(String),
+// //     Max(String),
+// //     Min(String),
+// // }

src/main.rs

@@ -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("*");
-}