+ Show Example
+
+*************************** 1.row ***************************
+_block_dist: Total_Blocks=[5] Total_Size=[93.65 Kb] Average_size=[18.73 Kb] Compression_Ratio=[23.98 %]
+
+Total_Blocks : Table `d0` contains total 5 blocks
+
+Total_Size: The total size of all the data blocks in table `d0` is 93.65 KB
+
+Average_size: The average size of each block is 18.73 KB
+
+Compression_Ratio: The data compression rate is 23.98%
+
+*************************** 2.row ***************************
+_block_dist: Total_Rows=[20000] Inmem_Rows=[0] MinRows=[3616] MaxRows=[4096] Average_Rows=[4000]
+
+Total_Rows: Table `d0` contains 20,000 rows
+
+Inmem_Rows: The rows still in memory, i.e. not committed in disk, is 0, i.e. none such rows
+
+MinRows: The minimum number of rows in a block is 3,616
+
+MaxRows: The maximum number of rows in a block is 4,096B
+
+Average_Rows: The average number of rows in a block is 4,000
+
+*************************** 3.row ***************************
+_block_dist: Total_Tables=[1] Total_Files=[2]
+
+Total_Tables: The number of child tables, 1 in this example
+
+Total_Files: The number of files storing the table's data, 2 in this example
+
+*************************** 4.row ***************************
+
+_block_dist: --------------------------------------------------------------------------------
+
+*************************** 5.row ***************************
+
+_block_dist: 0100 |
+
+*************************** 6.row ***************************
+
+_block_dist: 0299 |
+
+*************************** 7.row ***************************
+
+_block_dist: 0498 |
+
+*************************** 8.row ***************************
+
+_block_dist: 0697 |
+
+*************************** 9.row ***************************
+
+_block_dist: 0896 |
+
+*************************** 10.row ***************************
+
+_block_dist: 1095 |
+
+*************************** 11.row ***************************
+
+_block_dist: 1294 |
+
+*************************** 12.row ***************************
+
+_block_dist: 1493 |
+
+*************************** 13.row ***************************
+
+_block_dist: 1692 |
+
+*************************** 14.row ***************************
+
+_block_dist: 1891 |
+
+*************************** 15.row ***************************
+
+_block_dist: 2090 |
+
+*************************** 16.row ***************************
+
+_block_dist: 2289 |
+
+*************************** 17.row ***************************
+
+_block_dist: 2488 |
+
+*************************** 18.row ***************************
+
+_block_dist: 2687 |
+
+*************************** 19.row ***************************
+
+_block_dist: 2886 |
+
+*************************** 20.row ***************************
+
+_block_dist: 3085 |
+
+*************************** 21.row ***************************
+
+_block_dist: 3284 |
+
+*************************** 22.row ***************************
+
+_block_dist: 3483 ||||||||||||||||| 1 (20.00%)
+
+*************************** 23.row ***************************
+
+_block_dist: 3682 |
+
+*************************** 24.row ***************************
+
+_block_dist: 3881 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 4 (80.00%)
+
+Query OK, 24 row(s) in set (0.002444s)
+
+
+
+
+ The above show the block distribution percentage according to the number of rows in each block. In the above example, we can get below information:
+ - `_block_dist: 3483 ||||||||||||||||| 1 (20.00%)` means there is one block whose rows is between 3,483 and 3,681.
+ - `_block_dist: 3881 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 4 (80.00%)` means there are 4 blocks whose rows is between 3,881 and 4,096. - The number of blocks whose rows fall in other range is zero.
+
## SHOW TAGS
```sql
diff --git a/docs/en/12-taos-sql/29-changes.md b/docs/en/12-taos-sql/29-changes.md
index 78b6d5fc05b9b03e1e8b3af268bc357dfaa401bc..f288cd7545c1de25f6cf8b003e084ba3622524a7 100644
--- a/docs/en/12-taos-sql/29-changes.md
+++ b/docs/en/12-taos-sql/29-changes.md
@@ -54,7 +54,6 @@ The following data types can be used in the schema for standard tables.
| 27 | GRANT | Added | Grants permissions to a user.
| 28 | KILL TRANSACTION | Added | Terminates an mnode transaction.
| 29 | KILL STREAM | Deprecated | Terminated a continuous query. The continuous query feature has been replaced with the stream processing feature.
-| 30 | MERGE VGROUP | Added | Merges vgroups.
| 31 | REVOKE | Added | Revokes permissions from a user.
| 32 | SELECT | Modified |