"$.id"),\n    INDEX i1 (g)\n);\n\nmysql> EXPLAIN SELECT * FROM t2 WHERE g  = 123\\G\n*************************** 1. row ***************************\n           id: 1\n  select_type: SIMPLE\n        table: t2\n   partitions: NULL\n         type: ref\npossible_keys: i1\n          key: i1\n      key_len: 5\n          ref: const\n         rows: 1\n     filtered: 100.00\n        Extra: NULL\n','https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html');