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MDEV-7904: ANALYZE FORMAT=JSON doesn't print r_rows for union output

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Print r_rows. There is no table tracking for reading from tmp table, yet.
This commit is contained in:
Sergei Petrunia
2015-04-04 00:47:10 +03:00
parent a220905083
commit 47c344b00f
3 changed files with 91 additions and 0 deletions
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17
sql/sql_explain.cc
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@ -514,6 +514,23 @@ void Explain_union::print_explain_json(Explain_query *query,
make_union_table_name(table_name_buffer);
writer->add_member("table_name").add_str(table_name_buffer);
writer->add_member("access_type").add_str("ALL"); // not very useful
/* r_loops (not present in tabular output) */
if (is_analyze)
{
writer->add_member("r_loops").add_ll(fake_select_lex_tracker.get_loops());
}
/* `r_rows` */
if (is_analyze)
{
writer->add_member("r_rows");
if (fake_select_lex_tracker.has_scans())
writer->add_double(fake_select_lex_tracker.get_avg_rows());
else
writer->add_null();
}
writer->add_member("query_specifications").start_array();
for (int i= 0; i < (int) union_members.elements(); i++)