index_object:count()
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object
index_object
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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 ...
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