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NOTE: VACUUM bloat rate: After frequent UPDATE and DELETE operations are performed in a database, the deleted or updated rows are logically deleted from the database, but actually still exist in tables.
Delete the load balancer in time to prevent unnecessary costs. If you need to access the ELB cluster using a public IP address or domain name, bind an EIP or domain name on the ELB management console. If the cluster is an IPv4 cluster, only IPv4 ELBs can be bound.
Hierarchically divide the data directories for data imported and exported by GDS in advance, Do not put too many files under a data directory, and delete expired files in a timely manner. Properly plan the character set of the target database.
DELETING_NODE: Delete a node. DELETE_NODE_FAILED: Failed to delete the node. REDISTRIBUTING REDISTRIBUTE_FAILURE: The redistribution failed. WAITING_REDISTRIBUTION: Waiting to be redistributed REDISTRIBUTION_PAUSED: Redistribution is paused. ELB_BINDING: ELB is being bound.
1 2 DEL FROM employee WHERE ID > 10; COLLECT STAT on employee; Output 1 2 DELETE FROM employee WHERE ID > 10; ANALYZE employee; Order of Clauses For Teradata migration of SELECT statements, all the clauses (FROM, WHERE, HAVING and GROUP BY) can be listed in any order.
If an existing object references to an object in another schema, you need to manually delete the referenced object first. gs_restore backup/MPPDB_backup.dmp -p 8000 -d gaussdb -e -c -n PUBLIC gs_restore: [archiver (db)] Error while PROCESSING TOC: gs_restore: [archiver (db)] Error
If you call it, the following message is displayed: "ERROR: For security purposes, it is not allowed to manually delete audit logs." create_audit_csv_foregion_table() Description: Creates a partitioned foreign table for reading audit logs.
During data redistribution, you can perform insert, update, and delete operations on tables, but data updates may still be blocked for a short period of time. Redistribution consumes large quantities of CPU and I/O resources, significantly impacting job performance.
Return type: record pgxc_get_workload_sql_elapse_time() Description: Provides statistics on response time of SELECT/UPDATE/INSERT/DELETE statements executed in all workload Cgroup on all CNs of the current cluster.
Solution: Delete GTM/CM on the scale-out node. GAUSS-51216 : "The capacity expansion node [%s] must contain CN or DN." SQLSTATE: None Description: The node to be added to the cluster for scale-out does not have any CN or DN. Solution: Add CNs or DNs on the scaling node.
Delete the foreign table for interconnection. DROP FOREIGN TABLE ft_tbl; Parent topic: Importing Data
Template Create, edit, or delete the abbreviation template. For details about how to use the template, see Using Templates. Format Sets the tab width and whether to convert tabs to spaces while performing indenting and un-indenting operation.
For security purposes, you are advised to delete sensitive information before clicking Save and enter the required username and password again when using ODBC APIs to connect to the database. Enable the SSL mode.
In the AT syntax, all syntax, except for SPLIT, is similar to range partitioning. 8 ALTER TABLE ADD INDEX/DROP INDEX The ALTER TABLE syntax branch is added to add and delete indexes. 9 CREATE TABLE ... LIKE The CREATE TABLE...
DBMS_LOB.FREETEMPORARY is used to delete the temporary LOB and its index.
last modification time of an index, this syntax cannot be recorded. 1 2 ALTER INDEX [ IF EXISTS ] index_name RENAME PARTITION index_partition_name TO new_index_partition_name; Add and modify the index comment. 1 2 ALTER INDEX [ IF EXISTS ] index_name COMMENT 'text'; Delete
DML statements are recorded, including: the execution of SELECT, INSERT, UPDATE, and DELETE the execution of EXPLAIN ANALYZE and EXPLAIN PERFORMANCE the use of the query-level or perf-level views The entry statements for invoking functions and stored procedures are recorded.
If an error occurs during table creation, after it is fixed, the system may fail to delete the empty disk files created before the last automatic clearance. This problem seldom occurs.
DELETING_NODE: Delete a node. DELETE_NODE_FAILED: Failed to delete the node. REDISTRIBUTING REDISTRIBUTE_FAILURE: Redistribution failed. WAITING_REDISTRIBUTION: Waiting to be redistributed REDISTRIBUTION_PAUSED: Redistribution is paused. ELB_BINDING: ELB is being bound.
To use EXPLAIN ANALYZE on an INSERT, UPDATE, DELETE, CREATE TABLE AS, or EXECUTE statement without letting the command affect your data, you can place it in a transaction and roll back it after the analysis is complete. 1 2 3 START TRANSACTION; EXPLAIN ANALYZE ...; ROLLBACK; TRUE
