| -- Calcite based automatic query rewrite is disabled because of the unsupported union operator |
| -- However text based could work. |
| |
| set hive.support.concurrency=true; |
| set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager; |
| |
| create table t1(col0 int) STORED AS ORC TBLPROPERTIES ('transactional'='true'); |
| |
| insert into t1(col0) values (0),(1),(3),(10),(NULL); |
| |
| create materialized view mv1 as |
| select * from t1 where col0 > 2 union select * from t1 where col0 = 0; |
| |
| -- Both automatic query rewrite is algorithm should be disabled inside view creation. |
| explain cbo |
| create view v1 as |
| select sub.* from (select * from t1 where col0 > 2 union select * from t1 where col0 = 0) sub |
| where sub.col0 = 10; |
| |
| create view v1 as |
| select sub.* from (select * from t1 where col0 > 2 union select * from t1 where col0 = 0) sub |
| where sub.col0 = 10; |
| |
| explain cbo |
| select * from v1; |
| |
| select * from v1; |
