GridSQL -> create table t1 (c varchar(10));
OK
Response time: 0m 0s 78ms Total time: 0m 0s 78ms
GridSQL -> create table t2 (c varchar(10));
OK
Response time: 0m 0s 81ms Total time: 0m 0s 81ms
GridSQL -> select * from (select * from t1 union all select * from t2) as x;
SQLException: ERROR: Failed To Get Results For ( SQL , NodeURL) : ( SELECT "TMPTT39_1"."c" as "c" FROM "t2" ) eQS Node 10 has aborted execution, cause is: java.sql.SQLException : ERROR: missing FROM-clause entry for table "TMPTT39_1"