feat(snowflake)!: Transpile support for bitor/bit_or snowflake function (#4486)

* feat(snowflake): Transpile support for bitor/bit_or

* feat(snowflake): Transpile support for bitor/bit_or

* feat(snowflake): Transpile support for bitor/bit_or

* chore: moved test cases of bitor to the test_snowflake

* feat(snowflake): Added support for bitnow

* Revert "feat(snowflake): Added support for bitnow"

This reverts commit 85551c9.

* feat(snowflake): Added support for bitor extra parameters

* feat(snowflake): remove unnecessary test case

* chore(snowflake): code refactoring

---------

Co-authored-by: ranjanankur314 <[email protected]>

Author: ankur334

sqlglot/dialects/snowflake.py

@@ -107,6 +107,13 @@ def _builder(args: t.List) -> E:
     return _builder
 
 
+def _build_bitor(args: t.List) -> exp.BitwiseOr | exp.Anonymous:
+    if len(args) == 3:
+        return exp.Anonymous(this="BITOR", expressions=args)
+
+    return binary_from_function(exp.BitwiseOr)(args)
+
+
 # https://docs.snowflake.com/en/sql-reference/functions/div0
 def _build_if_from_div0(args: t.List) -> exp.If:
     lhs = exp._wrap(seq_get(args, 0), exp.Binary)
@@ -393,6 +400,8 @@ class Parser(parser.Parser):
             ),
             "BITXOR": binary_from_function(exp.BitwiseXor),
             "BIT_XOR": binary_from_function(exp.BitwiseXor),
+            "BITOR": _build_bitor,
+            "BIT_OR": _build_bitor,
             "BOOLXOR": binary_from_function(exp.Xor),
             "DATE": _build_datetime("DATE", exp.DataType.Type.DATE),
             "DATE_TRUNC": _date_trunc_to_time,
@@ -869,6 +878,7 @@ class Generator(generator.Generator):
                 "CONVERT_TIMEZONE", e.args.get("zone"), e.this
             ),
             exp.BitwiseXor: rename_func("BITXOR"),
+            exp.BitwiseOr: rename_func("BITOR"),
             exp.Create: transforms.preprocess([_flatten_structured_types_unless_iceberg]),
             exp.DateAdd: date_delta_sql("DATEADD"),
             exp.DateDiff: date_delta_sql("DATEDIFF"),

tests/dialects/test_snowflake.py

@@ -976,6 +976,12 @@ def test_snowflake(self):
                 "snowflake": "EDITDISTANCE(col1, col2, 3)",
             },
         )
+        self.validate_identity("SELECT BITOR(a, b) FROM table")
+
+        self.validate_identity("SELECT BIT_OR(a, b) FROM table", "SELECT BITOR(a, b) FROM table")
+
+        # Test BITOR with three arguments, padding on the left
+        self.validate_identity("SELECT BITOR(a, b, 'LEFT') FROM table_name")
 
     def test_null_treatment(self):
         self.validate_all(