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MDEV-27204: [ERROR] Json_writer: a member name was expected, Assertion `got_name

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[Adjusting Sergei Krivonos's patch]

"duplicates_removal" may contain multiple elements inside it and
so should have a JSON array as a value (and not object).
This commit is contained in:
Sergei Petrunia
2021-12-09 16:49:40 +03:00
parent 1e8bcbd0a0
commit c88e37ff85
3 changed files with 86 additions and 13 deletions
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85
mysql-test/main/explain_json.result
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@ -842,20 +842,22 @@ EXPLAIN
}
},
{
"duplicates_removal": {
"block-nl-join": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 10,
"filtered": 100
},
"buffer_type": "flat",
"buffer_size": "206",
"join_type": "BNL",
"attached_condition": "t1.b = t2.b and t1.a = t2.a"
"duplicates_removal": [
{
"block-nl-join": {
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 10,
"filtered": 100
},
"buffer_type": "flat",
"buffer_size": "206",
"join_type": "BNL",
"attached_condition": "t1.b = t2.b and t1.a = t2.a"
}
}
}
]
}
]
}
@ -1941,3 +1943,60 @@ EXPLAIN
}
}
drop table t1;
#
# MDEV-27204: [ERROR] Json_writer: a member name was expected, Assertion `got_name == named_item_expected()' failed
#
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2);
explain FORMAT=JSON
SELECT * FROM t1 t0
WHERE t0.a IN (SELECT t2.a FROM t1 t2 WHERE t0.a IN (SELECT t3.a FROM t1 t3));
EXPLAIN
{
"query_block": {
"select_id": 1,
"nested_loop": [
{
"table": {
"table_name": "t0",
"access_type": "ALL",
"rows": 2,
"filtered": 100
}
},
{
"duplicates_removal": [
{
"block-nl-join": {
"table": {
"table_name": "t2",
"access_type": "ALL",
"rows": 2,
"filtered": 100
},
"buffer_type": "flat",
"buffer_size": "152",
"join_type": "BNL",
"attached_condition": "t2.a = t0.a"
}
},
{
"block-nl-join": {
"table": {
"table_name": "t3",
"access_type": "ALL",
"rows": 2,
"filtered": 100
},
"buffer_type": "incremental",
"buffer_size": "109",
"join_type": "BNL",
"attached_condition": "t3.a = t0.a"
}
}
]
}
]
}
}
DROP TABLE t1;