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Comments (2)

laysakura avatar laysakura commented on June 14, 2024

RecordIteratorに夢を詰め込みすぎているのが一つの悪

解決案

schemaが、(空になるかもしれない)Recordから決まることはなくなり、leaf側のRecordsから計算されるのが重要な変更点

SELECTにおける決定順序(中間データであっても同じ)

  1. Records
  2. Record (Record::new(SqlValues) ; Recordはschemaを持たないでusize indexによる解決のみ)
  3. Records { RecordFieldRefSchema, Vec<Record> }

PlanNodeの構成

各PlanNodeはRecordsを持つ。
root nodeのRecords は、apllodb-serverにおいて RecordIterator にできる。その際、RecordIteratorのschemaはSELECT文から決まったものと一致するべき。

from apllodb.

laysakura avatar laysakura commented on June 14, 2024

#139 で実現

from apllodb.

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