From 78da996924c17116656609237f7120b033d11577 Mon Sep 17 00:00:00 2001
From: George Sittas <giwrgos.sittas@gmail.com>
Date: Sat, 17 Jun 2023 21:16:32 +0300
Subject: [PATCH] Fix(teradata): add support for the SELECT TOP N syntax

---
 sqlglot/dialects/teradata.py   | 13 +++++++------
 tests/dialects/test_dialect.py |  1 +
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/sqlglot/dialects/teradata.py b/sqlglot/dialects/teradata.py
index d5e5dd81dd..d9a5417a65 100644
--- a/sqlglot/dialects/teradata.py
+++ b/sqlglot/dialects/teradata.py
@@ -31,18 +31,19 @@ class Tokenizer(tokens.Tokenizer):
         # https://docs.teradata.com/r/Teradata-Database-SQL-Functions-Operators-Expressions-and-Predicates/March-2017/Comparison-Operators-and-Functions/Comparison-Operators/ANSI-Compliance
         KEYWORDS = {
             **tokens.Tokenizer.KEYWORDS,
+            "^=": TokenType.NEQ,
             "BYTEINT": TokenType.SMALLINT,
-            "SEL": TokenType.SELECT,
+            "GE": TokenType.GTE,
+            "GT": TokenType.GT,
             "INS": TokenType.INSERT,
-            "MOD": TokenType.MOD,
-            "LT": TokenType.LT,
             "LE": TokenType.LTE,
-            "GT": TokenType.GT,
-            "GE": TokenType.GTE,
-            "^=": TokenType.NEQ,
+            "LT": TokenType.LT,
+            "MOD": TokenType.MOD,
             "NE": TokenType.NEQ,
             "NOT=": TokenType.NEQ,
+            "SEL": TokenType.SELECT,
             "ST_GEOMETRY": TokenType.GEOMETRY,
+            "TOP": TokenType.TOP,
         }
 
         # Teradata does not support % as a modulo operator
diff --git a/tests/dialects/test_dialect.py b/tests/dialects/test_dialect.py
index 07ff4e4771..76c04ae850 100644
--- a/tests/dialects/test_dialect.py
+++ b/tests/dialects/test_dialect.py
@@ -1300,6 +1300,7 @@ def test_limit(self):
         self.validate_all(
             "SELECT x FROM y LIMIT 10",
             read={
+                "teradata": "SELECT TOP 10 x FROM y",
                 "tsql": "SELECT TOP 10 x FROM y",
             },
             write={