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MDEV-18478 ANALYZE for statement should show selectivity of ICP, part#2

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Part#2, variant 2: Make the printed r_ values in JSON output consistent.
After this patch, ANALYZE output has:

- r_index_rows (NEW) - Observed number of rows before ICP or Rowid Filtering
  checks. This is a per-scan average. like r_rows and "rows" are.

- r_rows (AS BEFORE) - Observed number of rows after ICP and Rowid Filtering.

- r_icp_filtered (NEW) - Observed selectivity of ICP condition.

- (AS BEFORE) observed selectivity of Rowid Filter is in
  $.rowid_filter.r_selectivity_pct

- r_total_filtered - Observed combined selectivity: fraction of rows left
  after applying ICP condition, Rowid Filter, and attached_condition.
  This is now comparable with "filtered" and is printed right after it.

- r_filtered (AS BEFORE) - Observed selectivity of "attached_condition".

Tabular ANALYZE output is not changed. Note that JSON's r_filtered and
r_rows have the same meanings as before and have the same meaning as in
tabular output.
This commit is contained in:
Sergei Petrunia
2024-02-26 11:32:38 +03:00
parent e87d1e391b
commit 0940a96940
32 changed files with 912 additions and 449 deletions
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15
mysql-test/main/explain_json_format_partitions.result
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@ -55,8 +55,9 @@ ANALYZE
"r_other_time_ms": "REPLACED",
"r_engine_stats": REPLACED,
"filtered": 100,
"r_filtered": 30,
"attached_condition": "t1.a in (2,3,4)"
"r_total_filtered": 30,
"attached_condition": "t1.a in (2,3,4)",
"r_filtered": 30
}
}
]
@ -79,10 +80,11 @@ ANALYZE
"access_type": "ALL",
"rows": 10,
"r_rows": 10,
"r_filtered": 30,
"r_total_filtered": 30,
"r_total_time_ms": "REPLACED",
"r_engine_stats": REPLACED,
"attached_condition": "t1.a in (2,3,4)"
"attached_condition": "t1.a in (2,3,4)",
"r_filtered": 30
}
}
}
@ -103,10 +105,11 @@ ANALYZE
"access_type": "ALL",
"rows": 10,
"r_rows": 10,
"r_filtered": 0,
"r_total_filtered": 0,
"r_total_time_ms": "REPLACED",
"r_engine_stats": REPLACED,
"attached_condition": "t1.a in (20,30,40)"
"attached_condition": "t1.a in (20,30,40)",
"r_filtered": 0
}
}
}