k_idx 和k_idx1 相同还能创建成功
`obclient [test]> create index k_idx1 on sbtest1(k);
Query OK, 0 rows affected (17.517 sec)
obclient [test]> show create table sbtest1 \G
*************************** 1. row ***************************
Table: sbtest1
Create Table: CREATE TABLE `sbtest1` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`k` int(11) NOT NULL DEFAULT '0',
`c` char(120) NOT NULL DEFAULT '',
`pad` char(60) NOT NULL DEFAULT '',
PRIMARY KEY (`id`),
KEY `k_idx` (`k`) BLOCK_SIZE 16384 LOCAL,
KEY `k_idx1` (`k`) BLOCK_SIZE 16384 LOCAL
) AUTO_INCREMENT = 2015029 DEFAULT CHARSET = utf8mb4 ROW_FORMAT = COMPACT COMPRESSION = 'zstd_1.3.8' REPLICA_NUM = 3 BLOCK_SIZE = 16384 USE_BLOOM_FILTER = FALSE TABLET_SIZE = 134217728 PCTFREE = 0
1 row in set (0.007 sec)
`