refine

e2e_test/sink/iceberg_sink.slt

@@ -1,9 +1,6 @@
 statement ok
 CREATE TABLE t6 (v1 int primary key, v2 bigint, v3 varchar);
 
-statement ok
-CREATE MATERIALIZED VIEW mv6 AS SELECT * FROM t6;
-
 statement ok
 CREATE SECRET iceberg_s3_access_key WITH (
   backend = 'meta'
@@ -15,7 +12,7 @@ CREATE SECRET iceberg_s3_secret_key WITH (
 ) as 'hummockadmin';
 
 statement ok
-CREATE SINK s6 AS select mv6.v1 as v1, mv6.v2 as v2, mv6.v3 as v3 from mv6 WITH (
+CREATE SINK s6 from t6 WITH (
     connector = 'iceberg',
     type = 'upsert',
     primary_key = 'v1',
@@ -84,8 +81,5 @@ DROP SOURCE iceberg_demo_source;
 statement ok
 DROP SINK s6;
 
-statement ok
-DROP MATERIALIZED VIEW mv6;
-
 statement ok
 DROP TABLE t6;