备份到 S3 端点 / 从 S3 端点恢复

CREATE DATABASE IF NOT EXISTS test_db;
CREATE TABLE test_db.test_table
(
    `key` Int,
    `value` String,
    `array` Array(String)
)
ENGINE = MergeTree
ORDER BY tuple()

INSERT INTO test_db.test_table SELECT *
FROM generateRandom('key Int, value String, array Array(String)')
LIMIT 1000

BACKUP TABLE test_db.test_table TO S3(
'https://backup-ch-docs.s3.us-east-1.amazonaws.com/backups/base_backup',
'<access key id>',
'<secret access key>'
)

┌─id───────────────────────────────────┬─status─────────┐
│ de442b75-a66c-4a3c-a193-f76f278c70f3 │ BACKUP_CREATED │
└──────────────────────────────────────┴────────────────┘

INSERT INTO test_db.test_table SELECT *
FROM generateRandom('key Int, value String, array Array(String)')
LIMIT 100

BACKUP TABLE test_db.test_table TO S3(
'https://backup-ch-docs.s3.us-east-1.amazonaws.com/backups/incremental_backup',
'<access key id>',
'<secret access key>'
)
SETTINGS base_backup = S3(
'https://backup-ch-docs.s3.us-east-1.amazonaws.com/backups/base_backup',
'<access key id>',
'<secret access key>'
)

┌─id───────────────────────────────────┬─status─────────┐
│ f6cd3900-850f-41c9-94f1-0c4df33ea528 │ BACKUP_CREATED │
└──────────────────────────────────────┴────────────────┘

RESTORE TABLE data AS test_db.test_table_restored FROM S3(
'https://backup-ch-docs.s3.us-east-1.amazonaws.com/backups/incremental_backup',
'<access key id>',
'<secret access key>'
)

┌─id───────────────────────────────────┬─status───┐
│ ff0c8c39-7dff-4324-a241-000796de11ca │ RESTORED │
└──────────────────────────────────────┴──────────┘

SELECT count()
FROM test_db.test_table_restored

┌─count()─┐
│    1100 │
└─────────┘

SELECT throwIf((
   SELECT groupArray(tuple(*))
   FROM test_db.test_table
   ) != (
   SELECT groupArray(tuple(*))
   FROM test_db.test_table_restored
), 'Data does not match after BACKUP/RESTORE')