kasakrisz commented on a change in pull request #2663:
URL: https://github.com/apache/hive/pull/2663#discussion_r719275880
##########
File path:
ql/src/test/queries/clientpositive/materialized_view_create_rewrite_8.q
##########
@@ -0,0 +1,97 @@
+-- Test Incremental rebuild of materialized view without aggregate when a
source table is insert only.
+
+SET hive.vectorized.execution.enabled=false;
+set hive.support.concurrency=true;
+set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager;
+set hive.strict.checks.cartesian.product=false;
+set hive.materializedview.rewriting=true;
+
+create table cmv_basetable_n6 (a int, b varchar(256), c decimal(10,2), d int)
stored as orc TBLPROPERTIES ('transactional'='true');
+
+insert into cmv_basetable_n6 values
+ (1, 'alfred', 10.30, 2),
+ (2, 'bob', 3.14, 3),
+ (2, 'bonnie', 172342.2, 3),
+ (3, 'calvin', 978.76, 3),
+ (3, 'charlie', 9.8, 1);
+
+create table cmv_basetable_2_n3 (a int, b varchar(256), c decimal(10,2), d
int) stored as orc TBLPROPERTIES ('transactional'='true',
'transactional_properties'='insert_only');
+
+insert into cmv_basetable_2_n3 values
+ (1, 'alfred', 10.30, 2),
+ (3, 'calvin', 978.76, 3);
+
+CREATE MATERIALIZED VIEW cmv_mat_view_n6
+ TBLPROPERTIES ('transactional'='true') AS
+ SELECT cmv_basetable_n6.a, cmv_basetable_2_n3.c
+ FROM cmv_basetable_n6 JOIN cmv_basetable_2_n3 ON (cmv_basetable_n6.a =
cmv_basetable_2_n3.a)
+ WHERE cmv_basetable_2_n3.c > 10.0;
+
+insert into cmv_basetable_2_n3 values
+ (3, 'charlie', 15.8, 1);
+
+-- CANNOT USE THE VIEW, IT IS OUTDATED
+EXPLAIN CBO
+SELECT cmv_basetable_n6.a
+FROM cmv_basetable_n6 join cmv_basetable_2_n3 ON (cmv_basetable_n6.a =
cmv_basetable_2_n3.a)
+WHERE cmv_basetable_2_n3.c > 10.10;
+
+EXPLAIN
+SELECT cmv_basetable_n6.a
+FROM cmv_basetable_n6 join cmv_basetable_2_n3 ON (cmv_basetable_n6.a =
cmv_basetable_2_n3.a)
+WHERE cmv_basetable_2_n3.c > 10.10;
+
+SELECT cmv_basetable_n6.a
+FROM cmv_basetable_n6 JOIN cmv_basetable_2_n3 ON (cmv_basetable_n6.a =
cmv_basetable_2_n3.a)
+WHERE cmv_basetable_2_n3.c > 10.10;
+
+-- REBUILD
+EXPLAIN
+ALTER MATERIALIZED VIEW cmv_mat_view_n6 REBUILD;
Review comment:
Incremental MV rebuild plan is created in two teps:
1. CBO rewrites the query part of the plan
2. The generated AST from the CBO plan is transformed from a union based
`insert-overwrite` to an `insert` plan
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
