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https://issues.apache.org/jira/browse/FLINK-6428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sunjincheng updated FLINK-6428:
-------------------------------
Description:
Add support DISTINCT in dataStream SQL as follow:
DATA:
{code}
(name, age)
(kevin, 28),
(sunny, 6),
(jack, 6)
{code}
SQL:
{code}
SELECT DISTINCT age FROM MyTable"
{code}
RESULTS:
{code}
28, 6
{code}
To DataStream:
{code}
inputDS
.keyBy() // KeyBy on all fields
.flatMap() // Eliminate duplicate data
{code}
[~fhueske] do we need this feature?
was:
Add support DISTINCT in dataStream SQL as follow:
DATA:
{code}
(name, age)
(kevin, 28),
(sunny, 6),
(jack, 6)
{code}
SQL:
{code}
SELECT DISTINCT age FROM MyTable"
{code}
RESULTS:
{code}
28, 6
{code}
To DataStream:
{code}
inputDS
.keyBy() // KeyBy on all fields
.flatMap() // Eliminate duplicate data
{code}
[~fhueske] do we need this feature?
> Add support DISTINCT in dataStream SQL
> --------------------------------------
>
> Key: FLINK-6428
> URL: https://issues.apache.org/jira/browse/FLINK-6428
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: sunjincheng
> Assignee: sunjincheng
>
> Add support DISTINCT in dataStream SQL as follow:
> DATA:
> {code}
> (name, age)
> (kevin, 28),
> (sunny, 6),
> (jack, 6)
> {code}
> SQL:
> {code}
> SELECT DISTINCT age FROM MyTable"
> {code}
> RESULTS:
> {code}
> 28, 6
> {code}
> To DataStream:
> {code}
> inputDS
> .keyBy() // KeyBy on all fields
> .flatMap() // Eliminate duplicate data
> {code}
> [~fhueske] do we need this feature?
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