{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "134.53"
},
"nested_loop": [
{
"table": {
"table_name": "b",
"access_type": "const",
"possible_keys": [
"PRIMARY",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.00",
"eval_cost": "0.20",
"prefix_cost": "0.00",
"data_read_per_join": "2K"
},
"used_columns": [
"category_id",
"id_path"
]
}
},
{
"table": {
"table_name": "a",
"access_type": "ALL",
"rows_examined_per_scan": 598,
"rows_produced_per_join": 66,
"filtered": "11.11",
"cost_info": {
"read_cost": "14.93",
"eval_cost": "13.29",
"prefix_cost": "134.53",
"data_read_per_join": "175K"
},
"used_columns": [
"category_id",
"id_path"
],
"attached_condition": "(`portal`.`a`.`id_path` like <cache>(concat('12','/%')))"
}
}
]
}
}
category_id |
---|
13 |
14 |
29 |
40 |
45 |
51 |
52 |
69 |
78 |
85 |
93 |
96 |
293 |
564 |
608 |
15 |
30 |
41 |
46 |
50 |
53 |
68 |
70 |
79 |
92 |
97 |
294 |
609 |
16 |
31 |
38 |
42 |
47 |
54 |
71 |
77 |
80 |
87 |
91 |
94 |
98 |
295 |
17 |
32 |
43 |
44 |
48 |
55 |
72 |
81 |
84 |
88 |
95 |
99 |
296 |
597 |
605 |
18 |
33 |
49 |
56 |
73 |
82 |
83 |
89 |
297 |
555 |
607 |
19 |
34 |
57 |
74 |
90 |
298 |
582 |
600 |
20 |
35 |
58 |
75 |
205 |
604 |
21 |
37 |
59 |
76 |
601 |
22 |
60 |
23 |
66 |
24 |
613 |
25 |
26 |
27 |
28 |
36 |