[SPARK-16703] Extra space in WindowSpecDefinition SQL representation

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.1, 2.1.0
• Component/s: SQL
• Target Version/s: 2.0.1, 2.1.0
• Assignee: Cheng Lian
• Reporter: Cheng Lian
• Created: 25/Jul/16 05:33
• Updated: 25/Jul/16 16:43
• Resolved: 25/Jul/16 16:43

Description

For a WindowSpecDefinition whose partitionSpec is empty, there's an extra space in its SQL representation:

( ORDER BY `a` ASC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)

Issue Links

• links to: [Github] Pull Request #14334 (liancheng)