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Add a testcase for EXPLAIN FORMAT=JSON for ROR-union index_merge.

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Sergei Petrunia
2015-02-17 18:43:22 +03:00
parent 3e2849d2a0
commit 4da7aa55f6
2 changed files with 32 additions and 0 deletions
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29
mysql-test/r/explain_json.result
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@ -148,6 +148,35 @@ EXPLAIN
}
}
}
explain format=json select * from t2 where (a1=1 and a2=1) or
(b1=2 and b2=1);
EXPLAIN
{
"query_block": {
"select_id": 1,
"table": {
"table_name": "t2",
"access_type": "index_merge",
"possible_keys": ["a1", "b1"],
"key_length": "10,10",
"index_merge": {
"union": {
"range": {
"key": "a1",
"used_key_parts": ["a1", "a2"]
},
"range": {
"key": "b1",
"used_key_parts": ["b1", "b2"]
}
}
},
"rows": 2,
"filtered": 100,
"attached_condition": "(((t2.a1 = 1) and (t2.a2 = 1)) or ((t2.b1 = 2) and (t2.b2 = 1)))"
}
}
}
# Try ref access on two key components
explain format=json select * from t0,t2 where t2.b1=t0.a and t2.b2=4;
EXPLAIN