From a8435b56aa82629678c0c03f0b6cff45f4d029b5 Mon Sep 17 00:00:00 2001
From: JagmitSwami <Jagmit.Swami@exeqmode.com>
Date: Fri, 25 Oct 2024 21:32:57 +0530
Subject: [PATCH] added support for decimal values without leading digits

---
 src/lexer/Tokenizer.ts          |  2 +-
 test/behavesLikeSqlFormatter.ts | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/lexer/Tokenizer.ts b/src/lexer/Tokenizer.ts
index cd6f9bd650..59571720aa 100644
--- a/src/lexer/Tokenizer.ts
+++ b/src/lexer/Tokenizer.ts
@@ -51,7 +51,7 @@ export default class Tokenizer {
       {
         type: TokenType.NUMBER,
         regex:
-          /(?:0x[0-9a-fA-F]+|0b[01]+|(?:-\s*)?[0-9]+(?:\.[0-9]*)?(?:[eE][-+]?[0-9]+(?:\.[0-9]+)?)?)(?![\w\p{Alphabetic}])/uy,
+          /(?:0x[0-9a-fA-F]+|0b[01]+|(?:-\s*)?(?:[0-9]*\.[0-9]+|[0-9]+(?:\.[0-9]*)?)(?:[eE][-+]?[0-9]+(?:\.[0-9]+)?)?)(?![\w\p{Alphabetic}])/uy,
       },
       // RESERVED_PHRASE is matched before all other keyword tokens
       // to e.g. prioritize matching "TIMESTAMP WITH TIME ZONE" phrase over "WITH" clause.
diff --git a/test/behavesLikeSqlFormatter.ts b/test/behavesLikeSqlFormatter.ts
index d8c90f5e0d..21e94dccad 100644
--- a/test/behavesLikeSqlFormatter.ts
+++ b/test/behavesLikeSqlFormatter.ts
@@ -279,4 +279,19 @@ export default function behavesLikeSqlFormatter(format: FormatFn) {
         tbl;
     `);
   });
+
+  it('supports decimal values without leading digits', () => {
+    const result = format(`
+	  SELECT employee_id FROM employees WHERE salary > .456 * 1000000 AND bonus < .0000239 * salary;
+	`);
+    expect(result).toBe(dedent`
+      SELECT
+        employee_id
+      FROM
+        employees
+      WHERE
+        salary > .456 * 1000000
+        AND bonus < .0000239 * salary;
+    `);
+  });
 }