arangodb/Documentation/DocuBlocks/collectionDatabaseTruncate.md

@brief truncates a collection db._truncate(collection)

Truncates a collection, removing all documents but keeping all its indexes.

db._truncate(collection-identifier)

Truncates a collection identified by collection-identified. No error is thrown if there is no such collection.

db._truncate(collection-name)

Truncates a collection named collection-name. No error is thrown if there is no such collection.

@EXAMPLES

Truncates a collection:

@EXAMPLE_ARANGOSH_OUTPUT{collectionDatabaseTruncate} ~ db._create("example"); col = db.example; col.save({ "Hello" : "World" }); col.count(); db._truncate(col); col.count(); ~ db._drop("example"); @END_EXAMPLE_ARANGOSH_OUTPUT

Truncates a collection identified by name:

@EXAMPLE_ARANGOSH_OUTPUT{collectionDatabaseTruncateName} ~ db._create("example"); col = db.example; col.save({ "Hello" : "World" }); col.count(); db._truncate("example"); col.count(); ~ db._drop("example"); @END_EXAMPLE_ARANGOSH_OUTPUT