vendor sqlite3-parser (lemon-rs)

vendored/sqlite3-parser/sqlparser_bench/benches/sqlparser_bench.rs

@@ -0,0 +1,48 @@
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use criterion::{criterion_group, criterion_main, Criterion};
+use fallible_iterator::FallibleIterator;
+use sqlite3_parser::lexer::sql::Parser;
+
+fn basic_queries(c: &mut Criterion) {
+    let mut group = c.benchmark_group("sqlparser-rs parsing benchmark");
+
+    let string = b"SELECT * FROM `table` WHERE 1 = 1";
+    group.bench_with_input("sqlparser::select", &string, |b, &s| {
+        b.iter(|| {
+            let mut parser = Parser::new(s);
+            assert!(parser.next().unwrap().unwrap().readonly())
+        });
+    });
+
+    let with_query = b"
+        WITH derived AS (
+            SELECT MAX(a) AS max_a,
+                   COUNT(b) AS b_num,
+                   user_id
+            FROM `TABLE`
+            GROUP BY user_id
+        )
+        SELECT * FROM `table`
+        LEFT JOIN derived USING (user_id)
+    ";
+    group.bench_with_input("sqlparser::with_select", &with_query, |b, &s| {
+        b.iter(|| {
+            let mut parser = Parser::new(s);
+            assert!(parser.next().unwrap().unwrap().readonly())
+        });
+    });
+}
+
+criterion_group!(benches, basic_queries);
+criterion_main!(benches);