[SPARK-9634] cleanup unnecessary Aliases in LogicalPlan at the end of analysis

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Component/s: SQL
• Assignee: Michael Armbrust
• Reporter: Wenchen Fan
• Created: 05/Aug/15 09:03
• Updated: 15/Aug/15 04:00
• Resolved: 15/Aug/15 04:00

Description

Also alias the ExtractValue instead of wrapping it with UnresolvedAlias when resolve attribute in LogicalPlan, as this alias will be trimmed if it's unnecessary.

Issue Links

• links to: [Github] Pull Request #7957 (cloud-fan)
• links to: [Github] Pull Request #8215 (marmbrus)