Query time 0.00313
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "30.93"
},
"nested_loop": [
{
"table": {
"table_name": "pfv",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"fl",
"variant_id",
"lang_code",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "lang_code",
"used_key_parts": [
"lang_code",
"feature_id",
"product_id"
],
"key_length": "12",
"rows_examined_per_scan": 18,
"rows_produced_per_join": 18,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "4.65",
"eval_cost": "3.60",
"prefix_cost": "8.25",
"data_read_per_join": "13K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
],
"attached_condition": "((`webmarco`.`pfv`.`feature_id` in (897,932,697)) and (`webmarco`.`pfv`.`product_id` in (262380,262370,259698,230172,230173,225088)) and (`webmarco`.`pfv`.`lang_code` = 'en'))"
}
},
{
"table": {
"table_name": "fv",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"feature_id"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"webmarco.pfv.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "18.00",
"eval_cost": "0.18",
"prefix_cost": "29.85",
"data_read_per_join": "1K"
},
"used_columns": [
"variant_id",
"feature_id",
"position"
],
"attached_condition": "(`webmarco`.`fv`.`feature_id` = `webmarco`.`pfv`.`feature_id`)"
}
},
{
"table": {
"table_name": "fvd",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id",
"lang_code"
],
"key_length": "9",
"ref": [
"webmarco.pfv.variant_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.90",
"eval_cost": "0.18",
"prefix_cost": "30.93",
"data_read_per_join": "4K"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
position |
variant |
697 |
225088 |
62213 |
0 |
In Low Season (01/10 / 2022-15 / 11/2022) |
897 |
230172 |
62572 |
0 |
Room 1 |
897 |
230173 |
62572 |
0 |
Room 1 |
897 |
259698 |
62572 |
0 |
Room 1 |
897 |
262380 |
62223 |
0 |
103 |
932 |
262370 |
63593 |
0 |
V5 |