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README.md

@@ -2,6 +2,21 @@
 
 The goal of this project is to build a SQL lexer and parser capable of parsing ANSI SQL:2011 (or 2016 if I can get access to the specification for free).
 
-The current code was copied from DataFusion and has some non-standard SQL support and only a subset of ANSI SQL currently.
-
 The current code is capable of parsing some simple SELECT and CREATE TABLE statements.
+
+```rust
+let sql = "SELECT a, b, 123, myfunc(b) \
+    FROM table_1 \
+    WHERE a > b AND b < 100 \
+    ORDER BY a DESC, b";
+
+let ast = Parser::parse_sql(sql.to_string()).unwrap();
+
+println!("AST: {:?}", ast);
+```
+
+This outputs
+
+```rust
+AST: SQLSelect { projection: [SQLIdentifier("a"), SQLIdentifier("b"), SQLLiteralLong(123), SQLFunction { id: "myfunc", args: [SQLIdentifier("b")] }], relation: Some(SQLIdentifier("table_1")), selection: Some(SQLBinaryExpr { left: SQLBinaryExpr { left: SQLIdentifier("a"), op: Gt, right: SQLIdentifier("b") }, op: And, right: SQLBinaryExpr { left: SQLIdentifier("b"), op: Lt, right: SQLLiteralLong(100) } }), order_by: Some([SQLOrderBy { expr: SQLIdentifier("a"), asc: false }, SQLOrderBy { expr: SQLIdentifier("b"), asc: true }]), group_by: None, having: None, limit: None }
+```

examples/parse_select.rs

@@ -0,0 +1,15 @@
+extern crate sqlparser;
+
+use sqlparser::sqlparser::*;
+
+fn main() {
+
+    let sql = "SELECT a, b, 123, myfunc(b) \
+        FROM table_1 \
+        WHERE a > b AND b < 100 \
+        ORDER BY a DESC, b";
+
+    let ast = Parser::parse_sql(sql.to_string()).unwrap();
+
+    println!("AST: {:?}", ast);
+}