Query time 0.00099
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "5.59"
},
"ordering_operation": {
"using_temporary_table": true,
"using_filesort": true,
"cost_info": {
"sort_cost": "2.77"
},
"nested_loop": [
{
"table": {
"table_name": "c",
"access_type": "index",
"possible_keys": [
"PRIMARY",
"product_id"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id",
"product_id"
],
"key_length": "6",
"rows_examined_per_scan": 3,
"rows_produced_per_join": 3,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "0.50",
"eval_cost": "0.30",
"prefix_cost": "0.80",
"data_read_per_join": "24"
},
"used_columns": [
"option_id",
"product_id"
],
"attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`c`.`product_id` in (6903,7817,7805,7819,7803,7824,7905,8336,7815,6941,7121,7086,7714,7176,6938,6911,6994,7084,6993,6991,7027,6939,7054,6940,7169,7120,7712,7138,7095,7167,7141,7695,7031,7089,6992,6892,7125,6880,6996,7173,7210,7711,7715,7792,7170,7174,7087,7177,6989,6995,6997,7142,7171,7172,7132,7795,7709,7806,7918,7119,7696,7793,7903,7929,7931,7791,7814,7818,7822,7902,7925,7928,7672,7697,7713,7790,7808,7820,7821,7831)) and (`softwarepirmam_hewadelivard_cscart_4`.`c`.`option_id` is not null))"
}
},
{
"table": {
"table_name": "a",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id"
],
"key_length": "3",
"ref": [
"softwarepirmam_hewadelivard_cscart_4.c.option_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 2,
"filtered": "92.31",
"cost_info": {
"read_cost": "0.75",
"eval_cost": "0.28",
"prefix_cost": "1.85",
"data_read_per_join": "6K"
},
"used_columns": [
"option_id",
"product_id",
"company_id",
"option_type",
"regexp",
"required",
"multiupload",
"allowed_extensions",
"max_file_size",
"missing_variants_handling",
"status",
"position",
"value"
],
"attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`a`.`product_id` = 0) and (`softwarepirmam_hewadelivard_cscart_4`.`a`.`status` = 'A'))"
}
},
{
"table": {
"table_name": "b",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id",
"lang_code"
],
"key_length": "9",
"ref": [
"softwarepirmam_hewadelivard_cscart_4.c.option_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 2,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.69",
"eval_cost": "0.28",
"prefix_cost": "2.82",
"data_read_per_join": "9K"
},
"used_columns": [
"option_id",
"lang_code",
"option_name",
"internal_option_name",
"option_text",
"description",
"comment",
"inner_hint",
"incorrect_message"
]
}
}
]
}
}
}