async.go

// Licensed to ClickHouse, Inc. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. ClickHouse, Inc. licenses this file to you 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.

package clickhouse_api

import (
	"context"
	clickhouse_tests "github.com/ClickHouse/clickhouse-go/v2/tests"
)

func AsyncInsert() error {
	conn, err := GetNativeConnection(nil, nil, nil)
	if err != nil {
		return err
	}
	ctx := context.Background()
	if !clickhouse_tests.CheckMinServerServerVersion(conn, 21, 12, 0) {
		return nil
	}
	defer func() {
		conn.Exec(ctx, "DROP TABLE example")
	}()
	conn.Exec(ctx, `DROP TABLE IF EXISTS example`)
	const ddl = `
		CREATE TABLE example (
			  Col1 UInt64
			, Col2 String
			, Col3 Array(UInt8)
			, Col4 DateTime
		) ENGINE = Memory
	`

	if err := conn.Exec(ctx, ddl); err != nil {
		return err
	}
	for i := 0; i < 100; i++ {
		if err := conn.AsyncInsert(ctx, `INSERT INTO example VALUES (
			?, ?, ?, now()
		)`, false, i, "Golang SQL database driver", []uint8{1, 2, 3, 4, 5, 6, 7, 8, 9}); err != nil {
			return err
		}
	}
	return nil
}