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Permissions Options: CREATE, DROP, ALTER, INDEX, INSERT, DELETE, UPDATE, and SELECT. You can select any or a combination of them. Description Description of the account, which cannot exceed 256 characters. Confirm the settings and click OK. Parent topic: Account Management
If a DDM instance is no longer used, you can delete it to avoid generating further expenditures. To help make sure your account never falls into arrears, you can configure the Balance Alert on the Overview page of the Billing Center.
Downgrading the instance to a version earlier than 3.0.9 will delete existing administrator accounts. Make sure the downgrade has no impact on your services. If IPv6 is enabled for the VPC subnet, the target version must be 3.0.9 or earlier or 3.1.3 or later.
How Do I Delete a DDM Instance? For pay-per-use instances, see Deleting a DDM Instance.
DML This practice describes common DML operations in DDM, such as INSERT, REPLACE, DELETE, UPDATE and SELECT. Shard Configuration How Does DDM Perform Sharding? This practice describes how sharding works and how to configure shards.
In the navigation pane on the left, choose Tags, and click Delete in the Operation column. In the displayed dialog box, click OK. Verify that the tag is no longer displayed on the Tags page.
Click Clear in the Operation column to delete the data migrated from original RDS for MySQL instances. Figure 9 Clearing data Carefully read information in the dialog box, confirm that the task is correct, and click Yes. Wait till the source data is cleared.
In DDM, one transaction to add, delete, update, or query a logical table is possibly executed on different database shards in multiple RDS instances, so a series of operations on data tables in one shard of an RDS instance can be deemed as a local transaction.
When you delete a schema by mistake or your RDS for MySQL instance becomes abnormal, metadata restoration allows you to restore your DDM instance metadata and match the metadata with the RDS instance that has PITR completed to re-establish the relationship between your DDM instance
The value can be CREATE, DROP, ALTER, INDEX, INSERT, DELETE, UPDATE, or SELECT. extend_authority Array of strings Extended permissions of the DDM account.
REVOKE CREATE,DROP,INDEX ON testdb.emp FROM hanson; REVOKE can delete actions at each permission level of an account. The permission level is specified by priv_level.
UPDATE and DELETE Updating a sharding key value to DEFAULT is not supported. Repeatedly updating the same field in one SQL statement is not supported. Updating a sharding key using UPDATE JOIN is not supported.
Multiple-table DELETE is supported if all tables joined across shards have primary keys. Variables cannot be referenced or operated in SQL statements.
The default value is 28800, indicating that the server waits for 28,800 seconds before closing a connection where there is no activity. 60~86400 28800 contains_shard_key Whether the SELECT, UPDATE, and DELETE statements must contain sharding keys in filter conditions.
After an instance is created, you can click the instance name to view its tags, modify or delete the tags on the Tags tab page. In addition, you can quickly search for and filter specified instances by tag. You can add a tag to an instance after the instance is created.
After an instance is created, you can click the instance name to view its tags, modify or delete the tags on the Tags tab page. In addition, you can quickly search for and filter specified instances by tag. You can add a tag to an instance after the instance is created.
Feature Description Phase Related Documents 1 Restoring metadata If you delete a schema by mistake or your RDS for MySQL instance becomes abnormal, metadata restoration allows you to restore your DDM instance metadata and match the metadata with the RDS instance that has completed
After an instance is created, you can click the instance name to view its tags, modify or delete the tags on the Tags tab page. In addition, you can quickly search for and filter specified instances by tag. You can add a tag to an instance after the instance is created.
After an instance is created, you can click the instance name to view its tags, modify or delete the tags on the Tags tab page. In addition, you can quickly search for and filter specified instances by tag. You can add a tag to an instance after the instance is created.
Before importing data of unsharded or common tables, delete the last line (for example, Dump completed on 2018-06-28 19:53:03) in the table structure file. Otherwise, data import may fail.
