add docs for fuse_block

Author: zhyass

docs/doc/30-reference/20-functions/111-system-functions/fuse_block.md

@@ -0,0 +1,39 @@
+---
+title: FUSE_BLOCK
+---
+
+Returns the block information of a snapshot of table.
+
+## Syntax
+
+```sql
+FUSE_BLOCK('<database_name>', '<table_name>','<snapshot_id>')
+```
+
+## Examples
+
+```sql
+CREATE TABLE mytable(c int);
+INSERT INTO mytable values(1);
+INSERT INTO mytable values(2); 
+
+-- Obtain a snapshot ID
+SELECT snapshot_id FROM FUSE_SNAPSHOT('default', 'mytable') limit 1;
+
+---
++----------------------------------+
+| snapshot_id                      |
++----------------------------------+
+| 51e84b56458f44269b05a059b364a659 |
++----------------------------------+
+
+SELECT * FROM FUSE_BLOCK('default', 'mytable', '51e84b56458f44269b05a059b364a659');
+
+---
++----------------------------------+----------------------------+----------------------------------------------------+------------+----------------------------------------------------+-------------------+
+| snapshot_id                      | timestamp                  | block_location                                     | block_size | bloom_filter_location                              | bloom_filter_size |
++----------------------------------+----------------------------+----------------------------------------------------+------------+----------------------------------------------------+-------------------+
+| 51e84b56458f44269b05a059b364a659 | 2022-09-15 07:14:14.137268 | 1/7/_b/39a6dbbfd9b44ad5a8ec8ab264c93cf5_v0.parquet |          4 | 1/7/_i/39a6dbbfd9b44ad5a8ec8ab264c93cf5_v1.parquet |               221 |
+| 51e84b56458f44269b05a059b364a659 | 2022-09-15 07:14:14.137268 | 1/7/_b/d0ee9688c4d24d6da86acd8b0d6f4fad_v0.parquet |          4 | 1/7/_i/d0ee9688c4d24d6da86acd8b0d6f4fad_v1.parquet |               219 |
++----------------------------------+----------------------------+----------------------------------------------------+------------+----------------------------------------------------+-------------------+
+```