[CALCITE-3406] duplicate initialize scope

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Not A Problem
• Affects Version/s: 1.21.0
• Component/s: core
• Assignee: Unassigned
• Reporter: liuzonghao
• Created: 14/Oct/19 03:22
• Updated: 18/Jun/21 09:00
• Resolved: 14/Oct/19 09:27

Description

scope was reinitialized in SqlValidatorImpl.validate() method.

https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java#L647

//代码占位符
SqlValidatorScope scope = new EmptyScope(this); 
scope = new CatalogScope(scope, ImmutableList.of("CATALOG"));