{
"query_block": {
"select_id": 1,
"table": {
"table_name": "pf",
"access_type": "const",
"possible_keys": ["PRIMARY", "feature_id"],
"key": "PRIMARY",
"key_length": "3",
"used_key_parts": ["filter_id"],
"ref": ["const"],
"rows": 1,
"filtered": 100
},
"table": {
"table_name": "gf",
"access_type": "ref",
"possible_keys": ["PRIMARY"],
"key": "PRIMARY",
"key_length": "3",
"used_key_parts": ["feature_id"],
"ref": ["const"],
"rows": 1,
"filtered": 100,
"using_index": true
}
}
}