[MDEV-24325] Optimizer trace doesn't cover LATERAL DERIVED Created: 2020-12-01  Updated: 2023-04-11  Resolved: 2021-03-29

Status: Closed
Project: MariaDB Server
Component/s: Optimizer
Affects Version/s: 10.4, 10.5
Fix Version/s: 10.6.0

Type: Bug Priority: Major
Reporter: Sergei Petrunia Assignee: Sergei Petrunia
Resolution: Fixed Votes: 0
Labels: optimizer_trace, split_materialized

Issue Links:
Blocks
blocks MDEV-30876 Back port LATERAL DERIVED coverage in... Closed
Relates
relates to MDEV-26300 Optimizer trace coverage of LATERAL D... Open

 Description   

Optimizer trace doesn't mention LATERAL DERIVED optimization. This can be extra confusing because LATERAL DERIVED code invokes parts of join optimizer that do the tracing.

This task is about

  • figuring out what to trace/log
  • do it.

 Comments   
Comment by Sergei Petrunia [ 2021-03-29 ]

Pushed a patch with basic tracing support.

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