Query time 0.00099
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "498.50"
},
"nested_loop": [
{
"table": {
"table_name": "p",
"access_type": "ALL",
"possible_keys": [
"PRIMARY",
"idx_group_id"
],
"rows_examined_per_scan": 922,
"rows_produced_per_join": 128,
"filtered": "13.88",
"cost_info": {
"read_cost": "165.70",
"eval_cost": "25.60",
"prefix_cost": "191.30",
"data_read_per_join": "2K"
},
"used_columns": [
"product_id",
"parent_product_id",
"group_id"
],
"attached_condition": "(`portal`.`p`.`product_id` in (10309,10310,10311,10312,10313,10314,10315,10316,10317,10318,10319,10322,10324,10325,10326,1471,1472,1473,1474,1475,1476,1477,1478,1479,1480,1481,1482,1483,1484,1485,1486,1487,1488,1489,1490,1491,1492,1493,1494,1495,1496,1497,1498,1499,1500,1502,1503,1504,1505,1506,1507,1508,1509,1510,1511,1512,1513,1514,1515,1516,1517,1518,1521,1522,1523,1528,1529,1530,1531,1532,1533,1534,1535,1536,1537,1538,1539,1540,1541,1542,1543,1544,1545,1546,1547,1548,1549,1550,1551,1552,1553,1554,1555,1556,1557,1558,1559,1560,1561,1562,1563,1564,1565,1566,1567,1568,1569,1570,1571,1572,1573,1574,1577,1578,1579,1580,1581,1582,1583,1584,1585,1586,1587,1588,1589,1590,1591,1592))"
}
},
{
"table": {
"table_name": "g",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"id"
],
"key_length": "4",
"ref": [
"portal.p.group_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 128,
"filtered": "100.00",
"cost_info": {
"read_cost": "128.00",
"eval_cost": "25.60",
"prefix_cost": "344.90",
"data_read_per_join": "98K"
},
"used_columns": [
"id",
"code"
]
}
},
{
"table": {
"table_name": "f",
"access_type": "ref",
"possible_keys": [
"idx_group_id"
],
"key": "idx_group_id",
"used_key_parts": [
"group_id"
],
"key_length": "4",
"ref": [
"portal.p.group_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 128,
"filtered": "100.00",
"cost_info": {
"read_cost": "128.00",
"eval_cost": "25.60",
"prefix_cost": "498.50",
"data_read_per_join": "14K"
},
"used_columns": [
"feature_id",
"purpose",
"group_id"
]
}
}
]
}
}