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Make EXPLAIN MERGE output format more compact

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We can use a single line to print all tuple counts that MERGE processed,
for conciseness, and elide those that are zeroes.  Non-text formats
report all numbers, as is typical.

Per comment from Justin Pryzby <pryzby@telsasoft.com>

Discussion: https://postgr.es/m/20220511163350.GL19626@telsasoft.com
This commit is contained in:
Alvaro Herrera
2022-05-18 18:33:04 +02:00
parent 81e3c83d98
commit 598ac10be1
2 changed files with 31 additions and 29 deletions
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25
src/backend/commands/explain.c
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@@ -4068,10 +4068,27 @@ show_modifytable_info(ModifyTableState *mtstate, List *ancestors,
skipped_path = total - insert_path - update_path - delete_path;
Assert(skipped_path >= 0);
ExplainPropertyFloat("Tuples Inserted", NULL, insert_path, 0, es);
ExplainPropertyFloat("Tuples Updated", NULL, update_path, 0, es);
ExplainPropertyFloat("Tuples Deleted", NULL, delete_path, 0, es);
ExplainPropertyFloat("Tuples Skipped", NULL, skipped_path, 0, es);
if (es->format == EXPLAIN_FORMAT_TEXT && total > 0)
{
ExplainIndentText(es);
appendStringInfoString(es->str, "Tuples:");
if (insert_path > 0)
appendStringInfo(es->str, " inserted=%.0f", insert_path);
if (update_path > 0)
appendStringInfo(es->str, " updated=%.0f", update_path);
if (delete_path > 0)
appendStringInfo(es->str, " deleted=%.0f", delete_path);
if (skipped_path > 0)
appendStringInfo(es->str, " skipped=%.0f", skipped_path);
appendStringInfoChar(es->str, '\n');
}
else
{
ExplainPropertyFloat("Tuples Inserted", NULL, insert_path, 0, es);
ExplainPropertyFloat("Tuples Updated", NULL, update_path, 0, es);
ExplainPropertyFloat("Tuples Deleted", NULL, delete_path, 0, es);
ExplainPropertyFloat("Tuples Skipped", NULL, skipped_path, 0, es);
}
}
}