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https://issues.apache.org/jira/browse/PHOENIX-7924?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell updated PHOENIX-7924:
-----------------------------------------
Description:
Three fixes for bugs discovered while generating EXPLAIN/EXPLAIN
VERBOSE/EXPLAIN JSON examples.
`LiteralExpression.toString()` rendered typed-null literals as empty. Output
now shows `BSON_VALUE(..., null)` instead of `BSON_VALUE(..., )`.
Leading whitespace was baked into functional index column names. Fixed by
trimming at creation. Output now shows `PROJECT "BSON_VALUE(...)"` instead of
`PROJECT " BSON_VALUE(...)"`.
`REWRITE INDEX EXPRESSION <expr> AS <index col>` breadcrumb was missing because
it was always silently dropped. Drop the eager emission, store the col to expr
substitution pairs on `StatementContext`, and emit one breadcrumb per actually
fired substitution from `QueryOptimizer.recordDecision`.
> EXPLAIN improvement bug fixes
> -----------------------------
>
> Key: PHOENIX-7924
> URL: https://issues.apache.org/jira/browse/PHOENIX-7924
> Project: Phoenix
> Issue Type: Sub-task
> Affects Versions: PHOENIX-7876-feature
> Reporter: Andrew Kyle Purtell
> Assignee: Andrew Kyle Purtell
> Priority: Major
>
> Three fixes for bugs discovered while generating EXPLAIN/EXPLAIN
> VERBOSE/EXPLAIN JSON examples.
> `LiteralExpression.toString()` rendered typed-null literals as empty. Output
> now shows `BSON_VALUE(..., null)` instead of `BSON_VALUE(..., )`.
> Leading whitespace was baked into functional index column names. Fixed by
> trimming at creation. Output now shows `PROJECT "BSON_VALUE(...)"` instead of
> `PROJECT " BSON_VALUE(...)"`.
> `REWRITE INDEX EXPRESSION <expr> AS <index col>` breadcrumb was missing
> because it was always silently dropped. Drop the eager emission, store the
> col to expr substitution pairs on `StatementContext`, and emit one breadcrumb
> per actually fired substitution from `QueryOptimizer.recordDecision`.
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