Fix union with diff columns

update translation of developer_instruction in zh

Fix enum conversion in native format for backward compatibility.

Update index.md

[Documentation]Translate the TTL part of MergeTree in the document into Chinese

Added a test of javaHashUTF16LE for non BMP code points

Slightly better usability of exception messages

Added disk info to `system.detached_parts`

Update tutorial.html

Fix reading empty set with prewhere dependent on alias column.

Fix prewhere with max_parallel_replicas.

FINAL SAMPLE

wrong tag zookeeper-servers instead of zookeeper

Update max_table_size_to_drop and max_partition_size_to_drop with config reload

Update changelog