[SPARK-42849] Session variables

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.5.0
• Fix Version/s: 4.0.0
• Component/s: Spark Core
• Assignee: Serge Rielau
• Reporter: Serge Rielau
• Shepherd: Wenchen Fan
• Created: 17/Mar/23 20:32
• Updated: 09/Aug/23 08:51
• Resolved: 09/Aug/23 08:51

Description

Provide a type-safe, engine controlled session variable:

CREATE [ OR REPLACE } TEMPORARY VARIABLE [ IF NOT EXISTS ]var_name  [ type ][ DEFAULT expresion ]

SET {  variable = expression | ( variable [, ...] ) = ( subquery | expression [, ...] )

DROP VARIABLE  [ IF EXISTS ]variable_name

Issue Links

• links to: [Github] Pull Request #40474 (srielau)
• links to: [Github] Pull Request #40474 (srielau)