Add parse support for BPCHAR (#2915)

* Add support for BPCHAR

* move test to fixture

---------

Co-authored-by: Erick Peirson <erick@Ericks-MBP.MG8702>

sqlglot/expressions.py

@@ -3662,6 +3662,7 @@ class Type(AutoName):
         BINARY = auto()
         BIT = auto()
         BOOLEAN = auto()
+        BPCHAR = auto()
         CHAR = auto()
         DATE = auto()
         DATE32 = auto()

sqlglot/parser.py

@@ -191,6 +191,7 @@ class Parser(metaclass=_Parser):
         TokenType.NCHAR,
         TokenType.VARCHAR,
         TokenType.NVARCHAR,
+        TokenType.BPCHAR,
         TokenType.TEXT,
         TokenType.MEDIUMTEXT,
         TokenType.LONGTEXT,
@@ -311,6 +312,7 @@ class Parser(metaclass=_Parser):
         TokenType.ASC,
         TokenType.AUTO_INCREMENT,
         TokenType.BEGIN,
+        TokenType.BPCHAR,
         TokenType.CACHE,
         TokenType.CASE,
         TokenType.COLLATE,
@@ -3666,7 +3668,6 @@ def _parse_types(
             identifier = allow_identifiers and self._parse_id_var(
                 any_token=False, tokens=(TokenType.VAR,)
             )
-
             if identifier:
                 tokens = self.dialect.tokenize(identifier.name)
 

sqlglot/tokens.py

@@ -125,6 +125,7 @@ class TokenType(AutoName):
     NCHAR = auto()
     VARCHAR = auto()
     NVARCHAR = auto()
+    BPCHAR = auto()
     TEXT = auto()
     MEDIUMTEXT = auto()
     LONGTEXT = auto()
@@ -801,6 +802,7 @@ class Tokenizer(metaclass=_Tokenizer):
         "VARCHAR2": TokenType.VARCHAR,
         "NVARCHAR": TokenType.NVARCHAR,
         "NVARCHAR2": TokenType.NVARCHAR,
+        "BPCHAR": TokenType.BPCHAR,
         "STR": TokenType.TEXT,
         "STRING": TokenType.TEXT,
         "TEXT": TokenType.TEXT,

tests/fixtures/identity.sql

@@ -846,3 +846,4 @@ SELECT x FROM t1 UNION ALL SELECT x FROM t2 UNION ALL SELECT x FROM t3 LIMIT 1
 WITH use(use) AS (SELECT 1) SELECT use FROM use
 SELECT recursive FROM t
 SELECT (ROW_NUMBER() OVER (PARTITION BY user ORDER BY date ASC) - ROW_NUMBER() OVER (PARTITION BY user, segment ORDER BY date ASC)) AS group_id FROM example_table
+CAST(foo AS BPCHAR)