space_object:count()

space_object

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

Returns

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...