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73df7a3009
MDEV-27036: repeated "table" key resolve for print_explain_json
MDEV-27036: duplicated keys in best_access_path
MDEV-27036: Explain_aggr_filesort::print_json_members: resolve duplicated "filesort" member in Json object
MDEV-27036: Explain_basic_join::
print_explain_json_interns fixed start_dups_weedout case for main.explain_json test
67 lines
2 KiB
Text
67 lines
2 KiB
Text
drop table if exists t0,t1,t2;
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#
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# MDEV-7266: Assertion `!element_started' failed in Json_writer& Json_writer::add_member
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#
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CREATE TABLE t1 (a INT) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (1),(2);
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CREATE TABLE t2 (column_name_1 INT, column_name_2 VARCHAR(52)) ENGINE=InnoDB;
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INSERT INTO t2 VALUES (3,'United States');
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CREATE TABLE t3 (b INT, c VARCHAR(3), PRIMARY KEY (c,b)) ENGINE=InnoDB;
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INSERT INTO t3 VALUES (4,'USA'),(5,'CAN');
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EXPLAIN FORMAT=JSON SELECT * FROM t1 WHERE 0 < ALL (
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SELECT tbl_alias1.column_name_1 FROM t2 AS tbl_alias1, t3 AS tbl_alias2
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WHERE tbl_alias2.b = tbl_alias1.column_name_1 AND tbl_alias2.c = tbl_alias1.column_name_2
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);
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EXPLAIN
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{
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"query_block": {
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"select_id": 1,
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"rows": 2,
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"filtered": 100
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}
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}
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],
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"subqueries": [
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{
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"query_block": {
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"select_id": 2,
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"nested_loop": [
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{
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"table": {
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"table_name": "tbl_alias1",
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"access_type": "ALL",
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"rows": 1,
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"filtered": 100,
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"attached_condition": "tbl_alias1.column_name_2 is not null and tbl_alias1.column_name_1 is not null"
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}
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},
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{
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"table": {
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"table_name": "tbl_alias2",
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"access_type": "eq_ref",
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"possible_keys": ["PRIMARY"],
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"key": "PRIMARY",
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"key_length": "9",
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"used_key_parts": ["c", "b"],
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"ref": [
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"test.tbl_alias1.column_name_2",
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"test.tbl_alias1.column_name_1"
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],
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"rows": 1,
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"filtered": 100,
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"attached_condition": "tbl_alias2.c = tbl_alias1.column_name_2",
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"using_index": true
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}
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}
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]
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}
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}
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]
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}
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}
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drop table t1,t2,t3;
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