Cost-based query transformation in Oracle Enhanced Subquery Optimizations in Oracle Cost-bas ...
Cost-based query transformation in Oracle Enhanced Subquery Optimizations in Oracle Cost-bas ...
参考,https://matt33.com/2019/03/17/apache-calcite-planner/ Volcano模型使用,分为下面几个步骤, 1和2 初始化 ...
RelTrait 表示RelNode的物理属性 由RelTraitDef代表RelTrait的类型 RelTraitDef,主要可以分为3种, RelCollationTraitD ...
TCPH的表结构 最小的且不变的, - Region,Nation(FK,REGION记录属于哪个区域) 1万级别, - Supplier(供应商),Skey,Name,地址,NKey(FK, ...
Calcite Version:1.26.0 Linq是一种对Query的抽象,任意Query都可以抽象成ExpressionTree,那么只要bind不同的implementor,就可以转化 ...
Calcite Version:1.26.0 CsvTest select "EMPNO", "JOINTIMES" from "DATE" order by "JOINTIMES" ...