> For the complete documentation index, see [llms.txt](https://docs.tibero.com/sysmasterdb/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tibero.com/sysmasterdb/8.3_manual/analysis/history-analysis/changed-plan-analysis/plan-history-comparison.md).
# Plan History Comparison
Plan History Comparison 화면에서는 TimeStamp와 Child Number가 다른 동일한 SQL에 대해 Plan을 비 교할 수 있다. 이때 Plan에 대한 비교는 Plan Tree 형태와 Plan Text 형태로 확인할 수 있다.
Plan History Comparison 화면 - Plan Tree 형태
Plan History Comparison 화면 - Plan Text 형태
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