query_block
Query cost: 0.95
GROUP
having_subqueries
subquery #3
Query cost: 0.35
justA
Full Table Scan
0.35
1 row
testAB
Full Table Scan
0.95
7 rows
attached_subqueries
subquery #2
Query cost: 0.35
justA
Full Table Scan
0.35
1 row
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