UNREGISTER MIGRATION SOURCE STORAGE UNIT

Description

The UNREGISTER MIGRATION SOURCE STORAGE UNIT syntax is used to unregister migration source storage unit from the current connection

Syntax

  1. UnregisterStorageUnit ::=
  2.   'DROP' 'STORAGE' 'UNIT' ( 'IF' 'EXISTS' )? storageUnitName  ( ',' storageUnitName )* 
  4. storageUnitName ::=
  5.   identifier

Supplement

  • UNREGISTER MIGRATION SOURCE STORAGE UNIT will only unregister storage unit in Proxy, the real data source corresponding to the storage unit will not be dropped;

Example

  • Drop a migration source storage unit
  1. UNREGISTER MIGRATION SOURCE STORAGE UNIT su_0;
  • Drop multiple migration source storage units
  1. UNREGISTER MIGRATION SOURCE STORAGE UNIT su_1, su_2;

Reserved word

UNREGISTER、MIGRATION、SOURCE、STORAGE、UNIT