Marco Gaido cd10f9df82 [SPARK-23916][SQL] Add array_join function ... ## What changes were proposed in this pull request? The PR adds the SQL function `array_join`. The behavior of the function is based on Presto's one. The function accepts an `array` of `string` which is to be joined, a `string` which is the delimiter to use between the items of the first argument and optionally a `string` which is used to replace `null` values. ## How was this patch tested? added UTs Author: Marco Gaido <marcogaido91@gmail.com> Closes #21011 from mgaido91/SPARK-23916.		2018-04-26 13:37:13 +09:00
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src	[SPARK-23916][SQL] Add array_join function	2018-04-26 13:37:13 +09:00
pom.xml	[SPARK-19550][BUILD][FOLLOW-UP] Remove MaxPermSize for sql module	2018-01-15 07:49:34 -06:00