Note
For V4.4.1, this parameter is available starting with V4.4.1.
Description
default_micro_block_format_version specifies the default microblock storage format version number when a table is created.
Privilege requirements
Query the parameter
The
systenant and all user tenants can execute theSHOW PARAMETERSstatement to query this parameter.Modify the parameter
The
systenant and all user tenants can execute theALTER SYSTEM SETstatement to modify this parameter.
Attributes
| Attribute | Description |
|---|---|
| Type | Int |
| Default value | 1 |
| Value range | [1,+∞)
|
| Modifiable | Yes. You can use the ALTER SYSTEM SET statement to modify the parameter. |
| Effective upon OBServer node restart | No. The setting takes effect immediately. |
Considerations
You can modify this parameter to change the default microblock storage format version number for tables, thereby enabling or disabling the new Flat row storage format.
Examples
Run the following command in a user tenant to set the default microblock storage format version number for tables created after this operation to 2:
obclient> ALTER SYSTEM SET default_micro_block_format_version = 2;