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EXPLAIN FORMAT=JSON: support SJ-Materialization

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- Switch Explain data structure from "flat" representation of
  SJ-Materialization into nested one.
- Update functions that print tabular output to operate on the
  nested structure.
- Add function to generate JSON output.
This commit is contained in:
Sergei Petrunia
2014-12-01 21:35:31 +03:00
parent c46eadb2b3
commit 753718c201
6 changed files with 253 additions and 83 deletions
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6
mysql-test/r/analyze_format_json.result
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@@ -167,11 +167,5 @@ EXPLAIN
}
}
}
select count(*) from t1 A, t1 B where A.b<20 and B.b<60;
count(*)
1200
select count(*) from t1 A, t1 B where A.b<20 and B.b<60 and A.c > B.c;
count(*)
190
drop table t1;
drop table t0;