Query time 0.00076
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "19.77"
},
"nested_loop": [
{
"table": {
"table_name": "PFV",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"fl",
"variant_id",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "product_id",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"rows_examined_per_scan": 11,
"rows_produced_per_join": 11,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.63",
"eval_cost": "1.10",
"prefix_cost": "2.73",
"data_read_per_join": "8K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id"
],
"attached_condition": "(`dev2`.`PFV`.`product_id` in ('30263','19493','19496','19497','19495','25666','26492','26979','27006','27201','25664'))"
}
},
{
"table": {
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"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"cscart_products_product_id_index"
],
"key": "PRIMARY",
"used_key_parts": [
"product_id"
],
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"ref": [
"dev2.PFV.product_id"
],
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"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "2.75",
"eval_cost": "1.10",
"prefix_cost": "6.58",
"data_read_per_join": "82K"
},
"used_columns": [
"product_id"
]
}
},
{
"table": {
"table_name": "PF",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"status"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.feature_id"
],
"rows_examined_per_scan": 1,
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"filtered": "80.46",
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"read_cost": "2.75",
"eval_cost": "0.89",
"prefix_cost": "10.43",
"data_read_per_join": "13K"
},
"used_columns": [
"feature_id",
"status"
],
"attached_condition": "(`dev2`.`PF`.`status` = 'A')"
}
},
{
"table": {
"table_name": "PFVS",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.variant_id"
],
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"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "2.21",
"eval_cost": "0.89",
"prefix_cost": "13.53",
"data_read_per_join": "13K"
},
"used_columns": [
"variant_id"
]
}
},
{
"table": {
"table_name": "PFD",
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"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
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"feature_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.feature_id"
],
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"filtered": "100.00",
"cost_info": {
"read_cost": "2.21",
"eval_cost": "0.90",
"prefix_cost": "16.64",
"data_read_per_join": "24K"
},
"used_columns": [
"feature_id",
"internal_name"
]
}
},
{
"table": {
"table_name": "PFVD",
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"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
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"ref": [
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],
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"filtered": "100.00",
"cost_info": {
"read_cost": "2.24",
"eval_cost": "0.90",
"prefix_cost": "19.77",
"data_read_per_join": "38K"
},
"used_columns": [
"variant_id",
"variant"
]
}
}
]
}
}