fix: allow underscores in param names

Author: simPod

src/Client/Http/RequestFactory.php

@@ -83,7 +83,7 @@ public function prepareSqlRequest(
     ): RequestInterface {
         $request = $this->initRequest($requestSettings);
 
-        preg_match_all('~\{([a-zA-Z\d]+):([a-zA-Z\d ]+(\(.+\))?)}~', $sql, $matches);
+        preg_match_all('~\{([a-zA-Z\d_]+):([a-zA-Z\d ]+(\(.+\))?)}~', $sql, $matches);
         if ($matches[0] === []) {
             $body = $this->streamFactory->createStream($sql);
             try {

tests/Client/Http/RequestFactoryTest.php

@@ -4,6 +4,7 @@
 
 namespace SimPod\ClickHouseClient\Tests\Client\Http;
 
+use DateTimeImmutable;
 use Generator;
 use Nyholm\Psr7\Factory\Psr17Factory;
 use PHPUnit\Framework\Attributes\CoversClass;
@@ -66,4 +67,36 @@ public static function providerPrepareRequest(): Generator
             '?database=database&max_block_size=1',
         ];
     }
+
+    public function testParamParsed(): void
+    {
+        $requestFactory = new RequestFactory(
+            new ParamValueConverterRegistry(),
+            new Psr17Factory(),
+            new Psr17Factory(),
+        );
+
+        $request = $requestFactory->prepareSqlRequest(
+            'SELECT {p1:String}, {p_2:Date}',
+            new RequestSettings(
+                [],
+                [],
+            ),
+            new RequestOptions(
+                [
+                    'p1' => 'value1',
+                    'p_2' => new DateTimeImmutable(),
+                ],
+            ),
+        );
+
+        $body = $request->getBody()->__toString();
+        self::assertStringContainsString('param_p1', $body);
+        self::assertStringContainsString(
+            <<<TEXT
+            Content-Disposition: form-data; name="param_p_2"\r\nContent-Length: 10\r\n\r\n2025-01-23
+            TEXT,
+            $body,
+        );
+    }
 }