Query time 0.29349
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "168430.81"
},
"ordering_operation": {
"using_filesort": true,
"grouping_operation": {
"using_temporary_table": true,
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_products",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"status"
],
"key": "status",
"used_key_parts": [
"status"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 160561,
"rows_produced_per_join": 16056,
"filtered": "10.00",
"cost_info": {
"read_cost": "17970.00",
"eval_cost": "3211.22",
"prefix_cost": "50082.20",
"data_read_per_join": "122M"
},
"used_columns": [
"product_id",
"status",
"company_id"
],
"attached_condition": "(`webmarco`.`cscart_products`.`company_id` = 352)"
}
},
{
"table": {
"table_name": "cscart_products_categories",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"link_type",
"pt"
],
"key": "pt",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"webmarco.cscart_products.product_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 26643,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "16071.60",
"eval_cost": "5328.79",
"prefix_cost": "71482.59",
"data_read_per_join": "416K"
},
"used_columns": [
"product_id",
"category_id"
]
}
},
{
"table": {
"table_name": "cscart_categories",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"webmarco.cscart_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 26643,
"filtered": "100.00",
"cost_info": {
"read_cost": "26643.93",
"eval_cost": "5328.79",
"prefix_cost": "103455.31",
"data_read_per_join": "154M"
},
"used_columns": [
"category_id",
"position"
]
}
},
{
"table": {
"table_name": "cscart_product_variation_group_products",
"access_type": "ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"webmarco.cscart_products.product_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 29219,
"filtered": "100.00",
"cost_info": {
"read_cost": "26643.93",
"eval_cost": "5843.82",
"prefix_cost": "135943.06",
"data_read_per_join": "456K"
},
"used_columns": [
"product_id",
"parent_product_id",
"group_id"
],
"attached_condition": "<if>(found_match(cscart_product_variation_group_products), ((`webmarco`.`cscart_product_variation_group_products`.`parent_product_id` = 0) or (not(<in_optimizer>(`webmarco`.`cscart_products`.`product_id`,<exists>(<index_lookup>(<cache>(`webmarco`.`cscart_products_categories`.`product_id`) in cscart_product_variation_group_products on PRIMARY)))))), true)",
"attached_subqueries": [
{
"dependent": true,
"cacheable": false,
"query_block": {
"select_id": 2,
"cost_info": {
"query_cost": "1.22"
},
"table": {
"table_name": "cscart_product_variation_group_products",
"access_type": "index_subquery",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"func"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.22",
"prefix_cost": "1.22",
"data_read_per_join": "17"
},
"used_columns": [
"product_id"
]
}
}
}
]
}
},
{
"table": {
"table_name": "cscart_category_descriptions",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id",
"lang_code"
],
"key_length": "9",
"ref": [
"webmarco.cscart_products_categories.category_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 29219,
"filtered": "100.00",
"cost_info": {
"read_cost": "26643.93",
"eval_cost": "5843.82",
"prefix_cost": "168430.81",
"data_read_per_join": "116M"
},
"used_columns": [
"category_id",
"lang_code",
"category"
]
}
}
]
}
}
}
}
Result
count |
category |
category_id |
2 |
Personalized Clothing |
932 |
1 |
Stampe Stickers |
935 |
1 |
Personalized Office Products |
945 |
3 |
Personalized Supplies |
8944 |