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Posted to issues@spark.apache.org by "Takeshi Yamamuro (Jira)" <ji...@apache.org> on 2020/01/22 00:36:00 UTC
[jira] [Comment Edited] (SPARK-27878) Support ARRAY(sub-SELECT)
expressions
[ https://issues.apache.org/jira/browse/SPARK-27878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17003657#comment-17003657 ]
Takeshi Yamamuro edited comment on SPARK-27878 at 1/22/20 12:35 AM:
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It seems PgSql and BigQuery support this feature. If we implement the Pg dialect in future, it might be worth supporting this. So, I'll make this keep open now.
was (Author: maropu):
It seems PgSql and BigQuery support this feature. If we implement the Pg dialect in future, it might be worth supporting this. So, I'll make this keep now.
> Support ARRAY(sub-SELECT) expressions
> -------------------------------------
>
> Key: SPARK-27878
> URL: https://issues.apache.org/jira/browse/SPARK-27878
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
>
> Construct an array from the results of a subquery. In this form, the array constructor is written with the key word {{ARRAY}} followed by a parenthesized (not bracketed) subquery. For example:
> {code:sql}
> SELECT ARRAY(SELECT oid FROM pg_proc WHERE proname LIKE 'bytea%');
> array
> -----------------------------------------------------------------------
> {2011,1954,1948,1952,1951,1244,1950,2005,1949,1953,2006,31,2412,2413}
> (1 row)
> {code}
> More details:
> [https://www.postgresql.org/docs/9.3/sql-expressions.html#SQL-SYNTAX-ARRAY-CONSTRUCTORS]
> [https://github.com/postgres/postgres/commit/730840c9b649a48604083270d48792915ca89233]
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