Snowflake: Split out CREATE VIEW into its own segment

src/sqlfluff/dialects/dialect_snowflake.py

@@ -1761,7 +1761,7 @@ class CreateStatementSegment(BaseSegment):
 
     match_grammar = Sequence(
         "CREATE",
-        Sequence("OR", "REPLACE", optional=True),
+        Ref("OrReplaceGrammar", optional=True),
         OneOf(
             Sequence("NETWORK", "POLICY"),
             Sequence("RESOURCE", "MONITOR"),
@@ -1772,9 +1772,7 @@ class CreateStatementSegment(BaseSegment):
             Sequence("NOTIFICATION", "INTEGRATION"),
             Sequence("SECURITY", "INTEGRATION"),
             Sequence("STORAGE", "INTEGRATION"),
-            "VIEW",
             Sequence("MATERIALIZED", "VIEW"),
-            Sequence("SECURE", "VIEW"),
             Sequence("MASKING", "POLICY"),
             "PIPE",
             Sequence("EXTERNAL", "FUNCTION"),
@@ -1784,7 +1782,7 @@ class CreateStatementSegment(BaseSegment):
             Sequence("FILE", "FORMAT"),
             "STREAM",
         ),
-        Sequence("IF", "NOT", "EXISTS", optional=True),
+        Ref("IfNotExistsGrammar", optional=True),
         Ref("ObjectReferenceSegment"),
         # Next set are Pipe statements https://docs.snowflake.com/en/sql-reference/sql/create-pipe.html
         Sequence(
@@ -1842,6 +1840,55 @@ class CreateStatementSegment(BaseSegment):
     )
 
 
+@snowflake_dialect.segment(replace=True)
+class CreateViewStatementSegment(BaseSegment):
+    """A `CREATE VIEW` statement, specifically for Snowflake's dialect.
+
+    https://docs.snowflake.com/en/sql-reference/sql/create-view.html
+    """
+
+    type = "create_view_statement"
+
+    match_grammar = Sequence(
+        "CREATE",
+        Ref("OrReplaceGrammar", optional=True),
+        AnyNumberOf(
+            "SECURE",
+            "RECURSIVE",
+        ),
+        "VIEW",
+        Ref("IfNotExistsGrammar", optional=True),
+        Ref("TableReferenceSegment"),
+        AnyNumberOf(
+            Bracketed(
+                Delimited(
+                    Sequence(
+                        Ref("ColumnReferenceSegment"),
+                        Ref("CommentClauseSegment", optional=True),
+                    ),
+                ),
+            ),
+            Sequence(
+                Ref.keyword("WITH", optional=True),
+                "ROW",
+                "ACCESS",
+                "POLICY",
+                Ref("NakedIdentifierSegment"),
+                "ON",
+                Bracketed(
+                    Delimited(Ref("ColumnReferenceSegment")),
+                ),
+            ),
+            Ref("TagBracketedEqualsSegment"),
+            Sequence("COPY", "GRANTS"),
+            Ref("CreateStatementCommentSegment"),
+            # @TODO: Support column-level masking policy & tagging.
+        ),
+        "AS",
+        Ref("SelectableGrammar"),
+    )
+
+
 @snowflake_dialect.segment()
 class FileFormatSegment(BaseSegment):
     """A Snowflake FILE_FORMAT Segment.

test/fixtures/dialects/snowflake/snowflake_create_view.sql

@@ -0,0 +1,42 @@
+
+create view another_view comment = 'a great description' as select col_1, col_2 from other_table;
+
+CREATE VIEW basic_view AS SELECT col1, col2 FROM src_table;
+
+CREATE VIEW view_with_comments
+COMMENT = 'my comment' AS SELECT col1, col2 FROM src_table;
+
+CREATE OR REPLACE VIEW view_with_replace_and_comment
+COMMENT = 'my comment' AS SELECT col1, col2 FROM src_table;
+
+CREATE OR REPLACE SECURE RECURSIVE VIEW IF NOT EXISTS secure_recursive_view_with_comment
+COMMENT = 'my comment' AS SELECT col1, col2 FROM src_table;
+
+CREATE OR REPLACE VIEW view_with_comment_and_copy_grants
+COMMENT = 'my comment'
+COPY GRANTS
+AS SELECT col1, col2 FROM src_table;
+
+CREATE OR REPLACE VIEW view_with_tags_and_copy_grants
+WITH TAG (foo = 'bar', hello = 'world')
+COPY GRANTS
+AS SELECT col1, col2 FROM src_table;
+
+CREATE OR REPLACE VIEW view_with_column_comment
+(
+    col1,
+    col2 COMMENT 'some comment'
+)
+AS SELECT col1, col2 FROM src_table;
+
+CREATE OR REPLACE SECURE RECURSIVE VIEW IF NOT EXISTS view_with_all_implemented_features
+    COMMENT = 'table-level comment'
+    (
+        col1,
+        col2 COMMENT 'some comment'
+    )
+AS
+WITH cte AS (SELECT col1 FROM table_1)
+SELECT col1, col2
+FROM table_2
+INNER JOIN my_cte ON table_1.pk = table_2.pk;