space_object:len()

object space_object¶

space_object:len()¶

Return the number of tuples in the space. If compared with count(), this method works faster because len() does not scan the entire space to count the tuples.

Parameters:	space_object (space_object) – an object reference
Return:	Number of tuples in the space.

Possible errors:

• ER_TRANSACTION_CONFLICT if a transaction conflict is detected in the MVCC transaction mode.

Example:

tarantool> box.space.tester:len() --- - 2 ... 

Note regarding storage engine: vinyl supports len() but the result may be approximate. If an exact result is necessary then use count() or pairs():length().