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Add, Delete, Modify, and Query operations on entire rows are frequently performed. Column storage Only necessary columns in a query are read. The homogeneity of data within a column facilitates efficient compression.
CALL dynamic_proc(); -- Delete the stored procedure. DROP PROCEDURE dynamic_proc; OPEN FOR Dynamic query statements can be executed by using OPEN FOR to open dynamic cursors. For details about the syntax, see Figure 3.
Add, Delete, Modify, and Query operations on entire rows are frequently performed. Column storage Only necessary columns in a query are read. The homogeneity of data within a column facilitates efficient compression.
Locate the row that contains the target elastic pool and click Edit in the Operation column to delete nodes from the elastic pool (move the selected ring from the left to the right). A host ring with CN nodes cannot be scaled in.
Frequently update and delete operations can lead to table bloating. To free up space, you can run the VACUUM or VACUUM FULL command on system catalogs.
The delete operation is performed on the partition [4-26] on April 30, and the insert operation is performed on the partition [4-27] on April 29. Therefore, partitions [4-26][4-27][4-29][4-30] are retained as hot partitions.
Value range: enumerated values origin indicates that the system copies operations such as insert, delete, and update from the current session. replica indicates that the system copies operations such as insert, delete, and update from other places to the current session. local indicates
The with_query detailed format is as follows: with_query_name [ ( column_name [, ...] ) ] AS ( {select | values | insert | update | delete} ) with_query_name specifies the name of the result set generated by a subquery.
Value range: enumerated values origin indicates that the system copies operations such as insert, delete, and update from the current session. replica indicates that the system copies operations such as insert, delete, and update from other places to the current session. local indicates
Each subquery can be a SELECT, VALUES, INSERT, UPDATE or DELETE statement.
After executing batch INSERT and DELETE operations, you are advised to run the ANALYZE statement on the table or the entire database to update statistics. By default, 30,000 rows of statistics are sampled.
Create a replication table node group using the CREATE NODE GROUP SQL statement and delete one using DROP NODE GROUP. Before deleting a replication table node group, delete all table objects in the node group.
Delete the tables created before. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 DROP TABLE store_sales; DROP TABLE date_dim; DROP TABLE store; DROP TABLE item; DROP TABLE time_dim; DROP TABLE promotion; DROP TABLE customer_demographics; DROP TABLE customer_address
When you cannot log in to Data Studio due to a damaged security key, perform the following steps to generate a new security key: Delete the security folder in Data Studio > UserData.
Add and modify the index comment. 1 2 ALTER INDEX [ IF EXISTS ] index_name COMMENT 'text'; Delete the index comment. 1 2 3 4 ALTER INDEX [ IF EXISTS ] index_name COMMENT ''; ALTER INDEX [ IF EXISTS ] index_name COMMENT NULL; Parameter Description Table 1 ALTER INDEX
attribute_name [ CASCADE | RESTRICT ] ALTER ATTRIBUTE attribute_name [ SET DATA ] TYPE data_type [ COLLATE collation ] [ CASCADE | RESTRICT ] Add a new attribute to a composite type. 1 ALTER TYPE name ADD ATTRIBUTE attribute_name data_type [ COLLATE collation ] [ CASCADE | RESTRICT ] Delete
= 'play gym' WHEN NOT MATCHED THEN INSERT VALUES (np.product_id, np.product_name, np.category) WHERE np.category = 'books'; Query updates: 1 SELECT * FROM products ORDER BY product_id; Delete a table: 1 2 DROP TABLE products; DROP TABLE newproducts; Parent Topic: DML Syntax
If the retention period of an incremental snapshot exceeds the maximum retention period, GaussDB(DWS) does not delete the snapshot immediately.
After the separation of duties is enabled, only the system administrator has the permission to create, modify, delete, and allocate logical clusters. Accessing a logical cluster requires permissions.
You can check it in the snapshot list and manually delete it if it is no longer necessary. During the change, the cluster is read-only, affecting intelligent O&M tasks. You are advised to start these tasks after the change or pause them before the change.
