[BUG] Return empty data

[shiyuhang0]

Describe the bug

What did you do
SQL

CREATE TABLE  `test`.`s4` (
`LISTID` int(5) NOT NULL,
`INST_NO` varchar(5) NOT NULL,
UNIQUE KEY `idx_listinst` (`LISTID`,`INST_NO`)
) 

insert into s4 values (1,'1')

TiSpark

spark.sql("select * from tidb_catalog.test.s4 where LISTID = 1").show()

return empty

TiSpark version : v3.1.2