Query time 0.00341
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "20.88"
},
"nested_loop": [
{
"table": {
"table_name": "jmj_product_sales",
"access_type": "ALL",
"possible_keys": [
"PRIMARY",
"pa"
],
"rows_examined_per_scan": 34,
"rows_produced_per_join": 9,
"filtered": "29.41",
"cost_info": {
"read_cost": "6.88",
"eval_cost": "2.00",
"prefix_cost": "8.88",
"data_read_per_join": "159"
},
"used_columns": [
"category_id",
"product_id",
"amount"
],
"attached_condition": "(`jmj_test`.`jmj_product_sales`.`product_id` in (1592,1675,1719,1636,1670,1523,1538,1683,1706,1607))"
}
},
{
"table": {
"table_name": "jmj_products_categories",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"link_type",
"pt"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id",
"product_id"
],
"key_length": "6",
"ref": [
"jmj_test.jmj_product_sales.category_id",
"jmj_test.jmj_product_sales.product_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 9,
"filtered": "99.62",
"cost_info": {
"read_cost": "10.00",
"eval_cost": "1.99",
"prefix_cost": "20.88",
"data_read_per_join": "159"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
],
"attached_condition": "(`jmj_test`.`jmj_products_categories`.`link_type` = 'M')"
}
}
]
}
}