added benchmark for insert splits

benches/perf/sharding/pgdog.toml

@@ -36,3 +36,11 @@ host = "localhost"
 role = "replica"
 shard = 2
 database_name = "pgdog3"
+
+[[sharded_tables]]
+database = "pgdog"
+column = "id"
+name = "sharding_bench"
+
+[rewrite]
+split_inserts = "rewrite"

benches/perf/sharding/script.sql

@@ -1,3 +1,6 @@
-\set id random(1, 30)
+\set id random(1, 10000)
+\set id2 random(10000, 20000)
+\set id3 random(20000, 30000)
 
-SELECT * FROM sharding_bench WHERE id = :id;
+
+INSERT INTO sharding_bench (id, value) VALUES (:id, 'test1'), (:id2, 'test3'), (:id3, 'test3');

benches/perf/sharding/setup.sql

@@ -1,5 +1,5 @@
 DROP TABLE IF EXISTS sharding_bench;
-CREATE TABLE sharding_bench (id BIGINT PRIMARY KEY, value TEXT, created_at TIMESTAMPTZ DEFAULT NOW());
+CREATE TABLE sharding_bench (id BIGINT, value TEXT, created_at TIMESTAMPTZ DEFAULT NOW());
 
 INSERT INTO sharding_bench VALUES (1, 'test1');
 INSERT INTO sharding_bench VALUES (2, 'test2');