Mybatisplus Error querying database.Cause: java.sql.SQLException: Operand should contain 1 column(s)

Mybatis-plus Error querying database. Cause: java.sql.SQLException: Operand should contain 1 column(s)

/**
 * QueryWrapperSelect 实现子查询
 */
@Test
public void QueryWrapperSelectSon(){
    
    
    //查询id小于等于100的用户信息
    QueryWrapper<User> queryWrapper = new QueryWrapper<>();
//        queryWrapper.inSql("id", "select id from user where id <= 100");
    queryWrapper.inSql("username", "select * from user where username like '%金%' AND is_deleted=0");
    List<User> list = userMapper.selectList(queryWrapper);
    list.forEach(System.out::println);
}

In the Mybatis-Plus actual combat project, when the user information is sub-queried through the QueryWrapper constructor, the following error is reported
Error querying database. Cause: java.sql.SQLException: Operand should contain 1 column(s)

org.springframework.jdbc.BadSqlGrammarException: 
### Error querying database.  Cause: java.sql.SQLException: Operand should contain 1 column(s)
### The error may exist in com/example/mybatisplus/mapper/UserMapper.java (best guess)
### The error may involve defaultParameterMap
### The error occurred while setting parameters
### SQL: SELECT  id AS uid,username AS name,age,email,create_time,update_time,is_deleted  FROM user   WHERE  is_deleted=0  AND (id IN (select * from user where id <= 100))
### Cause: java.sql.SQLException: Operand should contain 1 column(s)
; bad SQL grammar []; nested exception is java.sql.SQLException: Operand should contain 1 column(s)

Reason for error:
select * from user where username like '%金%' AND is_deleted=0 cannot be *, but must be a field in the database table Solution:

Replace * with the specific field name in the table, for example: Username or id, etc., can solve the problem of error reporting.


As above, all user information can be queried