Top.Mail.Ru
index_object:count() | Tarantool
 

index_object:count()

index_object:count()

object index_object
index_object:count([key][, iterator])

Iterate over an index, counting the number of tuples which match the key-value.

Parameters:
  • index_object (index_object) – an object reference.
  • key (scalar/table) – values to be matched against the index key
  • iterator – comparison method
Return:

the number of matching tuples.

Rtype:

number

Example:

tarantool> box.space.tester.index.primary:count(999)
---
- 0
...
tarantool> box.space.tester.index.primary:count('Alpha!', { iterator = 'LE' })
---
- 1
...