Add support for MySQL auto_increment offset (#950)

tests/sqlparser_mysql.rs

@@ -312,6 +312,31 @@ fn parse_create_table_comment() {
     }
 }
 
+#[test]
+fn parse_create_table_auto_increment_offset() {
+    let canonical =
+        "CREATE TABLE foo (bar INT NOT NULL AUTO_INCREMENT) ENGINE=InnoDB AUTO_INCREMENT 123";
+    let with_equal =
+        "CREATE TABLE foo (bar INT NOT NULL AUTO_INCREMENT) ENGINE=InnoDB AUTO_INCREMENT=123";
+
+    for sql in [canonical, with_equal] {
+        match mysql().one_statement_parses_to(sql, canonical) {
+            Statement::CreateTable {
+                name,
+                auto_increment_offset,
+                ..
+            } => {
+                assert_eq!(name.to_string(), "foo");
+                assert_eq!(
+                    auto_increment_offset.expect("Should exist").to_string(),
+                    "123"
+                );
+            }
+            _ => unreachable!(),
+        }
+    }
+}
+
 #[test]
 fn parse_create_table_set_enum() {
     let sql = "CREATE TABLE foo (bar SET('a', 'b'), baz ENUM('a', 'b'))";