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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

UnregisterStorageUnit ::=
  'DROP' 'STORAGE' 'UNIT' ( 'IF' 'EXISTS' )? storageUnitName  ( ',' storageUnitName )* 

storageUnitName ::=
  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
UNREGISTER MIGRATION SOURCE STORAGE UNIT su_0;
  • Drop multiple migration source storage units
UNREGISTER MIGRATION SOURCE STORAGE UNIT su_1, su_2;

Reserved word

UNREGISTER、MIGRATION、SOURCE、STORAGE、UNIT