mirror of
https://github.com/apache/datafusion-sqlparser-rs.git
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88 lines
3 KiB
Rust
88 lines
3 KiB
Rust
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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use criterion::{criterion_group, criterion_main, Criterion};
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use sqlparser::dialect::GenericDialect;
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use sqlparser::parser::Parser;
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fn basic_queries(c: &mut Criterion) {
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let mut group = c.benchmark_group("sqlparser-rs parsing benchmark");
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let dialect = GenericDialect {};
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let string = "SELECT * FROM my_table WHERE 1 = 1";
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group.bench_function("sqlparser::select", |b| {
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b.iter(|| Parser::parse_sql(&dialect, string).unwrap());
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});
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let with_query = "
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WITH derived AS (
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SELECT MAX(a) AS max_a,
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COUNT(b) AS b_num,
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user_id
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FROM MY_TABLE
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GROUP BY user_id
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)
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SELECT * FROM my_table
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LEFT JOIN derived USING (user_id)
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";
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group.bench_function("sqlparser::with_select", |b| {
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b.iter(|| Parser::parse_sql(&dialect, with_query).unwrap());
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});
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let large_statement = {
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let expressions = (0..1000)
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.map(|n| format!("FN_{}(COL_{})", n, n))
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.collect::<Vec<_>>()
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.join(", ");
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let tables = (0..1000)
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.map(|n| format!("TABLE_{}", n))
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.collect::<Vec<_>>()
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.join(" JOIN ");
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let where_condition = (0..1000)
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.map(|n| format!("COL_{} = {}", n, n))
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.collect::<Vec<_>>()
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.join(" OR ");
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let order_condition = (0..1000)
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.map(|n| format!("COL_{} DESC", n))
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.collect::<Vec<_>>()
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.join(", ");
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format!(
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"SELECT {} FROM {} WHERE {} ORDER BY {}",
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expressions, tables, where_condition, order_condition
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)
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};
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group.bench_function("parse_large_statement", |b| {
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b.iter(|| Parser::parse_sql(&dialect, criterion::black_box(large_statement.as_str())));
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});
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let large_statement = Parser::parse_sql(&dialect, large_statement.as_str())
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.unwrap()
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.pop()
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.unwrap();
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group.bench_function("format_large_statement", |b| {
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b.iter(|| {
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let formatted_query = large_statement.to_string();
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assert_eq!(formatted_query, large_statement);
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});
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});
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}
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criterion_group!(benches, basic_queries);
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criterion_main!(benches);
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