space_object:count()

object space_object¶

space_object:count([key][, iterator])¶

Return the number of tuples. If compared with len(), this method works slower because count() scans the entire space to count the tuples.

Parameters:	space_object (space_object) – an object reference key (scalar/table) – primary-key field values, must be passed as a Lua table if key is multi-part iterator – comparison method
Return:	Number of tuples.

Possible errors:

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

Example:

tarantool> box.space.tester:count(2, {iterator='GE'})
---
- 1
...