Query time 0.00127
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "3.90"
},
"ordering_operation": {
"using_temporary_table": true,
"using_filesort": true,
"nested_loop": [
{
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"PRIMARY",
"status"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
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"const"
],
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},
"used_columns": [
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"feature_type",
"categories_path",
"parent_id",
"display_on_catalog",
"status",
"position"
]
}
},
{
"table": {
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"fl",
"variant_id",
"lang_code",
"product_id",
"fpl"
],
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"feature_id",
"product_id"
],
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"ref": [
"const",
"const"
],
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"filtered": "56.37",
"index_condition": "(`portal`.`v`.`lang_code` = 'en')",
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},
"used_columns": [
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"product_id",
"variant_id",
"value",
"value_int",
"lang_code"
],
"attached_condition": "((if('1',(/* select#2 */ select 'A' from `portal`.`q_product_features` `df` where 1),'A') = 'A') and ((`portal`.`v`.`variant_id` <> 0) or (<cache>(('E' <> 'C')) and (`portal`.`v`.`value` <> '')) or <cache>(('E' = 'C')) or (`portal`.`v`.`value_int` <> '')))",
"attached_subqueries": [
{
"dependent": true,
"cacheable": false,
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},
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"PRIMARY"
],
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],
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],
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},
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]
}
}
}
]
}
},
{
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],
"key": "PRIMARY",
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],
"key_length": "9",
"ref": [
"const",
"const"
],
"rows_examined_per_scan": 1,
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"filtered": "100.00",
"cost_info": {
"read_cost": "0.56",
"eval_cost": "0.11",
"prefix_cost": "1.88",
"data_read_per_join": "883"
},
"used_columns": [
"feature_id",
"description",
"prefix",
"suffix",
"lang_code"
]
}
},
{
"table": {
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],
"key": "PRIMARY",
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"variant_id"
],
"key_length": "3",
"ref": [
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],
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"data_read_per_join": "658"
},
"used_columns": [
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},
{
"table": {
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"PRIMARY"
],
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],
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],
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"prefix_cost": "3.23",
"data_read_per_join": "1K"
},
"used_columns": [
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]
}
},
{
"table": {
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"PRIMARY"
],
"key": "PRIMARY",
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"feature_id"
],
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"filtered": "100.00",
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"prefix_cost": "3.91",
"data_read_per_join": "243"
},
"used_columns": [
"feature_id",
"feature_type",
"position"
],
"attached_condition": "<if>(is_not_null_compl(gf), (`portal`.`gf`.`feature_type` = 'G'), true)"
}
}
]
}
}
}