Analysis and Plan

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Wenlei Xie edited this page Jul 10, 2020 · 2 revisions

Parse + Analyze

Query first get parse & analyzed: https://github.com/prestodb/presto/blob/728b8b0db3e03922d3f8afc0a0ad4188dcdd9753/presto-main/src/main/java/com/facebook/presto/execution/SqlQueryExecution.java#L167

The returned class is a Analysis, essentially it's the AST + expression to type map + all other misc: https://github.com/prestodb/presto/blob/728b8b0db3e03922d3f8afc0a0ad4188dcdd9753/presto-main/src/main/java/com/facebook/presto/sql/analyzer/Analysis.java#L74

AST is represented by class Statement. Here is one example of Statement class called https://github.com/prestodb/presto/blob/728b8b0db3e03922d3f8afc0a0ad4188dcdd9753/presto-parser/src/main/java/com/facebook/presto/sql/tree/Query.java#L25

Plan