pasniak opened a new issue, #11042:
URL: https://github.com/apache/ignite/issues/11042

   I followed the 
[documentation](https://ignite.apache.org/docs/latest/SQL/indexes#custom-keys) 
to create a custom (composite) _key_ (XML below).
   
   In my case the _value_ is not a custom class: it's just 
`java.lang.String`..., which I would like to name/query in SQL. How do I 
accomplish this?
   
   Right now the SQL **table** is automagically named `STRING` and I think 
there is no way to query for the value (?!)
   
   ```
   0: jdbc:ignite:thin://127.0.0.1/> !tables
   +-----------+-------------+-----------------------------+------------+
   | TABLE_CAT | TABLE_SCHEM |         TABLE_NAME          | TABLE_TYPE |
   +-----------+-------------+-----------------------------+------------+
   | IGNITE    | PERSONCACHE | STRING                      | TABLE      |
   ```
   It has no value:
   ```
   0: jdbc:ignite:thin://127.0.0.1/> !columns STRING
   +-----------+-------------+------------+-------------+
   | TABLE_CAT | TABLE_SCHEM | TABLE_NAME | COLUMN_NAME |
   +-----------+-------------+------------+-------------+
   | IGNITE    | PERSONCACHE | STRING     | FIRSTNAME   |
   | IGNITE    | PERSONCACHE | STRING     | LASTNAME    |
   +-----------+-------------+------------+-------------+
   ```
   After `MyCustomKey myCustomKey = new MyCustomKey("Adam", "Edsel"); 
cache.put(myCustomKey, "test value");`
   ```
   0: jdbc:ignite:thin://127.0.0.1/> select * from personCache.STRING;
   +-----------+----------+
   | FIRSTNAME | LASTNAME |
   +-----------+----------+
   | Adam      | Edsel    |
   +-----------+----------+
   ```
   (how do I get `"test value"` by SQL?)
   
   Below is cache configuration:
   
   ```
   <?xml version="1.0" encoding="UTF-8"?>
   
   <beans xmlns="http://www.springframework.org/schema/beans";
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
          xsi:schemaLocation="
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans.xsd";>
   
       <!--bean id="grid.cfg" 
class="org.apache.ignite.configuration.IgniteConfiguration"/-->
       <bean class="org.apache.ignite.configuration.IgniteConfiguration">
           <property name="cacheConfiguration">
               <bean class="org.apache.ignite.configuration.CacheConfiguration">
                   <property name="name" value="PERSONCACHE"/><-- this has to 
be in CAPS -->
                   <!-- Configure query entities -->
                   <property name="queryEntities">
                       <list>
                           <bean class="org.apache.ignite.cache.QueryEntity">
                               <!-- Registering key's class. -->
                               <property name="keyType" 
value="org.examples.MyKey"/>
                               <!-- Registering value's class. -->
                               <property name="valueType" 
value="java.lang.String"/>  <-- how do I name this column in SQL? -->
                               <!-- Defining all the fields that will be 
accessible from DML. -->
                               <property name="fields">
                                   <map>
                                       <entry key="firstName" 
value="java.lang.String"/>
                                       <entry key="lastName" 
value="java.lang.String"/>
                                   </map>
                               </property>
                               <!-- Defining the subset of key's fields -->
                               <property name="keyFields">
                                   <set>
                                       <value>firstName</value>
                                       <value>lastName</value>
                                   </set>
                               </property>
                           </bean>
                       </list>
                   </property>
               </bean>
           </property>
       </bean>
   </beans>
   ```
   
   If I add a field which is **not** in the `keyFields`, 
   ```
   <entry key="description" value="java.lang.String"/>
   ```
   to that configuration, it leads to `Error: Failed to execute map query on 
remote node [nodeId=20293ae3-b385-4d9f-917f-cbe9325d5f8a, errMsg=Unexpected 
binary object class [type=class 
org.apache.ignite.internal.processors.cache.CacheObjectImpl]] 
(state=50000,code=1)`


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