IGNITE-27287 Java Thin: Fix NPE on SQL fields query (#12566)

Author: alex-plekhanov

modules/core/src/main/java/org/apache/ignite/internal/client/thin/TcpClientCache.java

@@ -71,6 +71,7 @@
 import org.apache.ignite.internal.processors.cache.CacheInvokeResult;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
 import org.apache.ignite.internal.processors.platform.client.ClientStatus;
+import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.T3;
 import org.apache.ignite.internal.util.typedef.X;
 import org.apache.ignite.internal.util.typedef.internal.A;
@@ -1389,7 +1390,7 @@ private QueryCursor<Cache.Entry<K, V>> sqlQuery(SqlQuery qry) {
             keepBinary,
             marsh,
             cacheId,
-            qry.getPartitions().length >= 1 ? qry.getPartitions()[0] : -1
+            !F.isEmpty(qry.getPartitions()) ? qry.getPartitions()[0] : -1
         ));
     }