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Show EXPLAIN QUERY PLAN details as an indented tree - #4237
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deepsidhu1313 wants to merge 1 commit into
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deepsidhu1313 wants to merge 1 commit into
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The result of EXPLAIN QUERY PLAN is a flat grid of (id, parent, notused, detail) rows, which makes the nesting of the plan hard to see. Add an ExplainTree helper that derives the nesting depth of each plan step from the id/parent columns (robust against out-of-order rows, unknown parents and parent loops) and an item delegate which shows the detail column indented by that depth. The Execute SQL tab installs the delegate only when the executed statement is EXPLAIN QUERY PLAN; the model data, copy and export are unchanged and other results are not affected. Includes the test-explain-tree unit test.
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The result of EXPLAIN QUERY PLAN is a flat grid of (id, parent, notused, detail) rows, which makes the nesting of the plan hard to see. Add an ExplainTree helper that derives the nesting depth of each plan step from the id/parent columns (robust against out-of-order rows, unknown parents and parent loops) and an item delegate which shows the detail column indented by that depth. The Execute SQL tab installs the delegate only when the executed statement is EXPLAIN QUERY PLAN; the model data, copy and export are unchanged and other results are not affected.
Includes the test-explain-tree unit test.