SPIDER_COPY_TABLES

Learn how to use this function to copy table data from one Spider link ID to another, useful for migrating data or rebalancing shards without stopping the service.

Syntax

SPIDER_COPY_TABLES(spider_table_name, 
  source_link_id, destination_link_id_list [,parameters])

Description

A UDF installed with the Spider Storage Engine, this function copies table data from source_link_id to destination_link_id_list. The service does not need to be stopped in order to copy.

If the Spider table is partitioned, the name must be of the format table_name#P#partition_name. The partition name can be viewed in the mysql.spider_tables table, for example:

SELECT table_name FROM mysql.spider_tables;
+-------------+
| table_name  |
+-------------+
| spt_a#P#pt1 |
| spt_a#P#pt2 |
| spt_a#P#pt3 |
+-------------+

Returns 1 if the data was copied successfully, or 0 if copying the data failed.

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