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Execution example::
table_create NoneExpantionDrilldownMemos TABLE_HASH_KEY ShortText
# [[0,1337566253.89858,0.000355720520019531],true]
column_create NoneExpantionDrilldownMemos tags COLUMN_VECTOR ShortText
# [[0,1337566253.89858,0.000355720520019531],true]
load --table NoneExpantionDrilldownMemos
[
{"_key": "Groonga is fast!", "tags": ["Groonga"]},
{"_key": "Mroonga uses Groonga!", "tags": ["Groonga", "Mroonga"]},
{"_key": "PGroonga uses Groonga!", "tags": ["Groonga", "PGroonga"]},
{"_key": "Mroonga and PGroonga are Groonga family", "tags": ["Groonga", "Mroonga", "PGroonga"]}
]
# [[0,1337566253.89858,0.000355720520019531],4]
select NoneExpantionDrilldownMemos \
--drilldowns[tags].keys tags \
--drilldowns[tags].key_vector_expansion NONE \
--drilldowns[tags].columns[none_expantion].stage initial \
--drilldowns[tags].columns[none_expantion].value _key \
--drilldowns[tags].columns[none_expantion].flags COLUMN_VECTOR \
--drilldowns[tags].sort_keys 'none_expantion' \
--drilldowns[tags].output_columns 'none_expantion, _nsubrecs' \
--limit 0
# [
# [
# 0,
# 1337566253.89858,
# 0.000355720520019531
# ],
# [
# [
# [
# 4
# ],
# [
# [
# "_id",
# "UInt32"
# ],
# [
# "_key",
# "ShortText"
# ],
# [
# "tags",
# "ShortText"
# ]
# ]
# ],
# {
# "tags": [
# [
# 3
# ],
# [
# [
# "none_expantion",
# "Text"
# ],
# [
# "_nsubrecs",
# "Int32"
# ]
# ],
# [
# [
# "Groonga"
# ],
# 4
# ],
# [
# [
# "Mroonga"
# ],
# 2
# ],
# [
# [
# "PGroonga"
# ],
# 2
# ]
# ]
# }
# ]
# ]
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