[Doc] Update MV Syntax Note (backport #50441) (#50500)

Co-authored-by: 絵空事スピリット <[email protected]>
StarRocks · Aug 30, 2024 · fe99d55 · fe99d55
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diff --git a/docs/en/sql-reference/sql-statements/data-definition/CREATE_MATERIALIZED_VIEW.md b/docs/en/sql-reference/sql-statements/data-definition/CREATE_MATERIALIZED_VIEW.md
@@ -112,6 +112,7 @@ The following table shows the correspondence between the aggregate function in t
 ```SQL
 CREATE MATERIALIZED VIEW [IF NOT EXISTS] [database.]<mv_name>
 [COMMENT ""]
+-- You must specify either `distribution_desc` or `refresh_scheme`, or both.
 -- distribution_desc
 DISTRIBUTED BY HASH(<bucket_key>[,<bucket_key2> ...]) [BUCKETS <bucket_number>]
 -- refresh_scheme

diff --git a/docs/zh/sql-reference/sql-statements/data-definition/CREATE_MATERIALIZED_VIEW.md b/docs/zh/sql-reference/sql-statements/data-definition/CREATE_MATERIALIZED_VIEW.md
@@ -126,6 +126,7 @@ SELECT * FROM <mv_name> [_SYNC_MV_];
 ```SQL
 CREATE MATERIALIZED VIEW [IF NOT EXISTS] [database.]<mv_name>
 [COMMENT ""]
+-- 必须至少指定 `distribution_desc` 和 `refresh_scheme` 其中之一。
 -- distribution_desc
 DISTRIBUTED BY HASH(<bucket_key>[,<bucket_key2> ...]) [BUCKETS <bucket_number>]
 -- refresh_scheme