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COLLECT_SET_EACH
A set of all distinct entries by the given key.

Syntax

COLLECT_SET([MAX VALUES, ]GROUP, VALUE)

Arguments

MAX VALUES: The maximum number of entries that can be counted (default: 2,147,483,647) ‌ MAX VALUESis optional. If it is omitted there is, in effect, no limit. GROUP: Find the distinct entries of this field. VALUE: This field is the key.

Returns

An ARRAY of the argument type.

Example

Data

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[
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{
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"GROUP_ID":"G1",
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"USER_ID":"U1",
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"CONNECTION_TIME":"2020-06-26 02:31:29,573"
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},
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{
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"GROUP_ID":"G1",
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"USER_ID":"U2",
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"CONNECTION_TIME":"2020-06-26 18:11:45,783"
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},
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{
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"GROUP_ID":"G2",
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"USER_ID":"Z1",
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"CONNECTION_TIME":"2020-06-26 23:54:27,687"
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},
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{
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"GROUP_ID":"G2",
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"CONNECTION_TIME":"2020-07-26 23:54:27,687"
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},
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{
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"GROUP_ID":"G1",
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"USER_ID":"U2",
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"CONNECTION_TIME":"2021-07-01 02:31:29,573"
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},
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{
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"GROUP_ID":"G1",
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"USER_ID":"U1",
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"CONNECTION_TIME":"2021-07-01 18:11:45,783"
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},
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{
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"GROUP_ID":"G2",
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"USER_ID":"Z1",
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"CONNECTION_TIME":"2021-07-01 23:54:27,687"
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}
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]
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Query:

Display all the VALUE by key.
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SELECT
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COLLECT_SET_EACH(data.GROUP_ID, data.USER_ID) AS collect_set_each_data_group_id__data_user_id
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FROM
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"SAMPLE_DATA_G1U1 - json"
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Results:

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{
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"collect_set_each_data_group_id__data_user_id":[
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{
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"key":"G1",
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"value":[
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"U1",
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"U2"
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]
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},
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{
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"key":"G2",
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"value":[
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"Z1"
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]
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}
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]
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}
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Last modified 8mo ago