[SPARK-27765] Type Casts: expression::type

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Won't Do
• Affects Version/s: 3.0.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Xiao Li
• Created: 19/May/19 02:01
• Updated: 29/Dec/19 00:42
• Resolved: 19/May/19 02:02

Description

https://www.postgresql.org/docs/9.0/sql-expressions.html#SQL-SYNTAX-TYPE-CASTS

• A type cast specifies a conversion from one data type to another. PostgreSQL accepts two equivalent syntaxes for type casts:
  • CAST ( expression AS type )
  • expression::type
• The CAST syntax conforms to SQL; the syntax with :: is historical PostgreSQL usage.