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testing_project / Documentation: reference/reference_lua/box_index/count — English

-- Insert test data --
box.space.bands:insert { 1, 'Roxette', 1986 }
box.space.bands:insert { 2, 'Scorpions', 1965 }
box.space.bands:insert { 3, 'Ace of Base', 1987 }
box.space.bands:insert { 4, 'The Beatles', 1960 }
box.space.bands:insert { 5, 'Pink Floyd', 1965 }
box.space.bands:insert { 6, 'The Rolling Stones', 1962 }
box.space.bands:insert { 7, 'The Doors', 1965 }
box.space.bands:insert { 8, 'Nirvana', 1987 }
box.space.bands:insert { 9, 'Led Zeppelin', 1968 }
box.space.bands:insert { 10, 'Queen', 1970 }

-- Count the number of tuples that match the full key value
count = box.space.bands.index.year:count(1965)
--[[
---
- 3
...
--]]

-- Count the number of tuples that match the partial key value
count_partial = box.space.bands.index.year_band:count(1965)
--[[
---
- 3
...
--]]
a year ago
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a year ago
Last updated
a year ago
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a year ago
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string 13