SQL - DELETE

The Delete command deletes one or more records from the database. The set of records involved are taken by the WHERE clause.

NOTE: Don't use SQL DELETE to remove Vertices or Edges but use the DELETE VERTEX and DELETE EDGE commands that assure the integrity of the graph.

Syntax

DELETE FROM <Class>|cluster:<cluster>|index:<index> [LOCK <default|record>] [RETURN <returning>]
  [WHERE <Condition>*] [LIMIT <MaxRecords>] [TIMEOUT <timeout>]

Where:

• LOCK specifies how the record is locked between the load and the delete. It can be a value between:
  • DEFAULT, no lock. In case of concurrent delete, the MVCC throws an exception
  • RECORD, locks the record during the delete
• RETURN specifies what to return. It can be a value between:
  • COUNT, the default, returns the number of deleted records
  • BEFORE, returns the records before the delete
• WHERE, SQL-Where condition to select records to update
• LIMIT, sets the maximum number of records to update
• TIMEOUT, if any limits the update operation to a timeout

Examples

Delete all the records with surname equals to 'unknown' ignoring the case:

delete from Profile where surname.toLowerCase() = 'unknown'

To know more about other SQL commands look at SQL commands.