diff --git a/CHANGELOG.MD b/CHANGELOG.MD
index 944f7fd..eb4c730 100644
--- a/CHANGELOG.MD
+++ b/CHANGELOG.MD
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.1.2] - 2024-12-30
+
+### Changed
+
+- fixed bugs
+
 ## [2.1.1] - 2024-12-23
 
 ### Added
diff --git a/composer.json b/composer.json
index ed6ffc7..b0357ea 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "hemiframe/php-query-builder",
     "description": "Powerful and lightweight PHP SQL Query Builder",
-    "version": "2.1.1",
+    "version": "2.1.2",
     "keywords": [
         "PHP",
         "SQL builder",
@@ -42,4 +42,4 @@
             "composer run-script phpstan"
         ]
     }
-}
+}
\ No newline at end of file
diff --git a/composer.lock b/composer.lock
index 05d6080..7fc6f42 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e5756f82de737a5a5cb9a03e10f15965",
+    "content-hash": "c6f29f568230fb3c64bb72822c7609ea",
     "packages": [
         {
             "name": "psr/simple-cache",
@@ -459,16 +459,16 @@
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v3.65.0",
+            "version": "v3.66.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHP-CS-Fixer/PHP-CS-Fixer.git",
-                "reference": "79d4f3e77b250a7d8043d76c6af8f0695e8a469f"
+                "reference": "5f5f2a142ff36b93c41885bca29cc5f861c013e6"
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             "dist": {
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-                "url": "https://api.github.com/repos/PHP-CS-Fixer/PHP-CS-Fixer/zipball/79d4f3e77b250a7d8043d76c6af8f0695e8a469f",
-                "reference": "79d4f3e77b250a7d8043d76c6af8f0695e8a469f",
+                "url": "https://api.github.com/repos/PHP-CS-Fixer/PHP-CS-Fixer/zipball/5f5f2a142ff36b93c41885bca29cc5f861c013e6",
+                "reference": "5f5f2a142ff36b93c41885bca29cc5f861c013e6",
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@@ -494,7 +494,7 @@
                 "symfony/polyfill-mbstring": "^1.28",
                 "symfony/polyfill-php80": "^1.28",
                 "symfony/polyfill-php81": "^1.28",
-                "symfony/process": "^5.4 || ^6.0 || ^7.0",
+                "symfony/process": "^5.4 || ^6.0 || ^7.0 <7.2",
                 "symfony/stopwatch": "^5.4 || ^6.0 || ^7.0"
             },
             "require-dev": {
@@ -550,7 +550,7 @@
             ],
             "support": {
                 "issues": "https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/issues",
-                "source": "https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/tree/v3.65.0"
+                "source": "https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/tree/v3.66.0"
             },
             "funding": [
                 {
@@ -558,7 +558,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2024-11-25T00:39:24+00:00"
+            "time": "2024-12-29T13:46:23+00:00"
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             "name": "phpstan/phpstan",
@@ -1303,29 +1303,29 @@
         },
         {
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-            "version": "5.1.1",
+            "version": "6.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/diff.git",
-                "reference": "c41e007b4b62af48218231d6c2275e4c9b975b2e"
+                "reference": "b4ccd857127db5d41a5b676f24b51371d76d8544"
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             "dist": {
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-                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/c41e007b4b62af48218231d6c2275e4c9b975b2e",
-                "reference": "c41e007b4b62af48218231d6c2275e4c9b975b2e",
+                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/b4ccd857127db5d41a5b676f24b51371d76d8544",
+                "reference": "b4ccd857127db5d41a5b676f24b51371d76d8544",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.1"
+                "php": ">=8.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^10.0",
-                "symfony/process": "^6.4"
+                "phpunit/phpunit": "^11.0",
+                "symfony/process": "^4.2 || ^5"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "5.1-dev"
+                    "dev-main": "6.0-dev"
                 }
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@@ -1358,7 +1358,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/diff/issues",
                 "security": "https://github.com/sebastianbergmann/diff/security/policy",
-                "source": "https://github.com/sebastianbergmann/diff/tree/5.1.1"
+                "source": "https://github.com/sebastianbergmann/diff/tree/6.0.2"
             },
             "funding": [
                 {
@@ -1366,51 +1366,50 @@
                     "type": "github"
                 }
             ],
-            "time": "2024-03-02T07:15:17+00:00"
+            "time": "2024-07-03T04:53:05+00:00"
         },
         {
             "name": "symfony/console",
-            "version": "v6.4.15",
+            "version": "v7.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "f1fc6f47283e27336e7cebb9e8946c8de7bff9bd"
+                "reference": "fefcc18c0f5d0efe3ab3152f15857298868dc2c3"
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-                "reference": "f1fc6f47283e27336e7cebb9e8946c8de7bff9bd",
+                "url": "https://api.github.com/repos/symfony/console/zipball/fefcc18c0f5d0efe3ab3152f15857298868dc2c3",
+                "reference": "fefcc18c0f5d0efe3ab3152f15857298868dc2c3",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.1",
-                "symfony/deprecation-contracts": "^2.5|^3",
+                "php": ">=8.2",
                 "symfony/polyfill-mbstring": "~1.0",
                 "symfony/service-contracts": "^2.5|^3",
-                "symfony/string": "^5.4|^6.0|^7.0"
+                "symfony/string": "^6.4|^7.0"
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-                "symfony/dependency-injection": "<5.4",
-                "symfony/dotenv": "<5.4",
-                "symfony/event-dispatcher": "<5.4",
-                "symfony/lock": "<5.4",
-                "symfony/process": "<5.4"
+                "symfony/dependency-injection": "<6.4",
+                "symfony/dotenv": "<6.4",
+                "symfony/event-dispatcher": "<6.4",
+                "symfony/lock": "<6.4",
+                "symfony/process": "<6.4"
             },
             "provide": {
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-                "symfony/dependency-injection": "^5.4|^6.0|^7.0",
-                "symfony/event-dispatcher": "^5.4|^6.0|^7.0",
+                "symfony/config": "^6.4|^7.0",
+                "symfony/dependency-injection": "^6.4|^7.0",
+                "symfony/event-dispatcher": "^6.4|^7.0",
                 "symfony/http-foundation": "^6.4|^7.0",
                 "symfony/http-kernel": "^6.4|^7.0",
-                "symfony/lock": "^5.4|^6.0|^7.0",
-                "symfony/messenger": "^5.4|^6.0|^7.0",
-                "symfony/process": "^5.4|^6.0|^7.0",
-                "symfony/stopwatch": "^5.4|^6.0|^7.0",
-                "symfony/var-dumper": "^5.4|^6.0|^7.0"
+                "symfony/lock": "^6.4|^7.0",
+                "symfony/messenger": "^6.4|^7.0",
+                "symfony/process": "^6.4|^7.0",
+                "symfony/stopwatch": "^6.4|^7.0",
+                "symfony/var-dumper": "^6.4|^7.0"
             },
             "type": "library",
             "autoload": {
@@ -1444,7 +1443,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v6.4.15"
+                "source": "https://github.com/symfony/console/tree/v7.2.1"
             },
             "funding": [
                 {
@@ -1460,7 +1459,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-11-06T14:19:14+00:00"
+            "time": "2024-12-11T03:49:26+00:00"
         },
         {
             "name": "symfony/deprecation-contracts",
@@ -1481,12 +1480,12 @@
             },
             "type": "library",
             "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/contracts",
+                    "name": "symfony/contracts"
+                },
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                     "dev-main": "3.5-dev"
-                },
-                "thanks": {
-                    "name": "symfony/contracts",
-                    "url": "https://github.com/symfony/contracts"
                 }
             },
             "autoload": {
@@ -1531,24 +1530,24 @@
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v6.4.13",
+            "version": "v7.2.0",
             "source": {
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                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "0ffc48080ab3e9132ea74ef4e09d8dcf26bf897e"
+                "reference": "910c5db85a5356d0fea57680defec4e99eb9c8c1"
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             "dist": {
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-                "reference": "0ffc48080ab3e9132ea74ef4e09d8dcf26bf897e",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/910c5db85a5356d0fea57680defec4e99eb9c8c1",
+                "reference": "910c5db85a5356d0fea57680defec4e99eb9c8c1",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.1",
+                "php": ">=8.2",
                 "symfony/event-dispatcher-contracts": "^2.5|^3"
             },
             "conflict": {
-                "symfony/dependency-injection": "<5.4",
+                "symfony/dependency-injection": "<6.4",
                 "symfony/service-contracts": "<2.5"
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@@ -1557,13 +1556,13 @@
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-                "symfony/config": "^5.4|^6.0|^7.0",
-                "symfony/dependency-injection": "^5.4|^6.0|^7.0",
-                "symfony/error-handler": "^5.4|^6.0|^7.0",
-                "symfony/expression-language": "^5.4|^6.0|^7.0",
-                "symfony/http-foundation": "^5.4|^6.0|^7.0",
+                "symfony/config": "^6.4|^7.0",
+                "symfony/dependency-injection": "^6.4|^7.0",
+                "symfony/error-handler": "^6.4|^7.0",
+                "symfony/expression-language": "^6.4|^7.0",
+                "symfony/http-foundation": "^6.4|^7.0",
                 "symfony/service-contracts": "^2.5|^3",
-                "symfony/stopwatch": "^5.4|^6.0|^7.0"
+                "symfony/stopwatch": "^6.4|^7.0"
             },
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             "autoload": {
@@ -1591,7 +1590,7 @@
             "description": "Provides tools that allow your application components to communicate with each other by dispatching events and listening to them",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/event-dispatcher/tree/v6.4.13"
+                "source": "https://github.com/symfony/event-dispatcher/tree/v7.2.0"
             },
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                 {
@@ -1607,7 +1606,7 @@
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                 }
             ],
-            "time": "2024-09-25T14:18:03+00:00"
+            "time": "2024-09-25T14:21:43+00:00"
         },
         {
             "name": "symfony/event-dispatcher-contracts",
@@ -1629,12 +1628,12 @@
             },
             "type": "library",
             "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/contracts",
+                    "name": "symfony/contracts"
+                },
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-                },
-                "thanks": {
-                    "name": "symfony/contracts",
-                    "url": "https://github.com/symfony/contracts"
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             },
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@@ -1687,25 +1686,25 @@
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-            "version": "v6.4.13",
+            "version": "v7.2.0",
             "source": {
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                 "url": "https://github.com/symfony/filesystem.git",
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+                "php": ">=8.2",
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             "require-dev": {
-                "symfony/process": "^5.4|^6.4|^7.0"
+                "symfony/process": "^6.4|^7.0"
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@@ -1733,7 +1732,7 @@
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             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v6.4.13"
+                "source": "https://github.com/symfony/filesystem/tree/v7.2.0"
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@@ -1749,27 +1748,27 @@
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-            "time": "2024-10-25T15:07:50+00:00"
+            "time": "2024-10-25T15:15:23+00:00"
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-            "version": "v6.4.13",
+            "version": "v7.2.0",
             "source": {
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                 "url": "https://github.com/symfony/finder.git",
-                "reference": "daea9eca0b08d0ed1dc9ab702a46128fd1be4958"
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+                "php": ">=8.2"
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-                "symfony/filesystem": "^6.0|^7.0"
+                "symfony/filesystem": "^6.4|^7.0"
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@@ -1797,7 +1796,7 @@
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             "homepage": "https://symfony.com",
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-                "source": "https://github.com/symfony/finder/tree/v6.4.13"
+                "source": "https://github.com/symfony/finder/tree/v7.2.0"
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@@ -1813,24 +1812,24 @@
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-            "time": "2024-10-01T08:30:56+00:00"
+            "time": "2024-10-23T06:56:12+00:00"
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-            "version": "v6.4.16",
+            "version": "v7.2.0",
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+                "php": ">=8.2",
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@@ -1864,7 +1863,7 @@
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-                "source": "https://github.com/symfony/options-resolver/tree/v6.4.16"
+                "source": "https://github.com/symfony/options-resolver/tree/v7.2.0"
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@@ -1880,7 +1879,7 @@
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@@ -2358,20 +2357,20 @@
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-            "version": "v6.4.15",
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@@ -2399,7 +2398,7 @@
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-                "source": "https://github.com/symfony/process/tree/v6.4.15"
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@@ -2415,7 +2414,7 @@
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@@ -2441,12 +2440,12 @@
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+                "thanks": {
+                    "url": "https://github.com/symfony/contracts",
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@@ -2502,20 +2501,20 @@
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-                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/2cae0a6f8d04937d02f6d19806251e2104d54f92",
-                "reference": "2cae0a6f8d04937d02f6d19806251e2104d54f92",
+                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/696f418b0d722a4225e1c3d95489d262971ca924",
+                "reference": "696f418b0d722a4225e1c3d95489d262971ca924",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.1",
+                "php": ">=8.2",
                 "symfony/service-contracts": "^2.5|^3"
             },
             "type": "library",
@@ -2544,7 +2543,7 @@
             "description": "Provides a way to profile code",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/stopwatch/tree/v6.4.13"
+                "source": "https://github.com/symfony/stopwatch/tree/v7.2.0"
             },
             "funding": [
                 {
@@ -2560,24 +2559,24 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-09-25T14:18:03+00:00"
+            "time": "2024-09-25T14:21:43+00:00"
         },
         {
             "name": "symfony/string",
-            "version": "v6.4.15",
+            "version": "v7.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/string.git",
-                "reference": "73a5e66ea2e1677c98d4449177c5a9cf9d8b4c6f"
+                "reference": "446e0d146f991dde3e73f45f2c97a9faad773c82"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/string/zipball/73a5e66ea2e1677c98d4449177c5a9cf9d8b4c6f",
-                "reference": "73a5e66ea2e1677c98d4449177c5a9cf9d8b4c6f",
+                "url": "https://api.github.com/repos/symfony/string/zipball/446e0d146f991dde3e73f45f2c97a9faad773c82",
+                "reference": "446e0d146f991dde3e73f45f2c97a9faad773c82",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.1",
+                "php": ">=8.2",
                 "symfony/polyfill-ctype": "~1.8",
                 "symfony/polyfill-intl-grapheme": "~1.0",
                 "symfony/polyfill-intl-normalizer": "~1.0",
@@ -2587,11 +2586,12 @@
                 "symfony/translation-contracts": "<2.5"
             },
             "require-dev": {
-                "symfony/error-handler": "^5.4|^6.0|^7.0",
-                "symfony/http-client": "^5.4|^6.0|^7.0",
-                "symfony/intl": "^6.2|^7.0",
+                "symfony/emoji": "^7.1",
+                "symfony/error-handler": "^6.4|^7.0",
+                "symfony/http-client": "^6.4|^7.0",
+                "symfony/intl": "^6.4|^7.0",
                 "symfony/translation-contracts": "^2.5|^3.0",
-                "symfony/var-exporter": "^5.4|^6.0|^7.0"
+                "symfony/var-exporter": "^6.4|^7.0"
             },
             "type": "library",
             "autoload": {
@@ -2630,7 +2630,7 @@
                 "utf8"
             ],
             "support": {
-                "source": "https://github.com/symfony/string/tree/v6.4.15"
+                "source": "https://github.com/symfony/string/tree/v7.2.0"
             },
             "funding": [
                 {
@@ -2646,7 +2646,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-11-13T13:31:12+00:00"
+            "time": "2024-11-13T13:31:26+00:00"
         }
     ],
     "aliases": [],
diff --git a/src/HemiFrame/Lib/SQLBuilder/Query.php b/src/HemiFrame/Lib/SQLBuilder/Query.php
index b6a1c2f..9272f2e 100644
--- a/src/HemiFrame/Lib/SQLBuilder/Query.php
+++ b/src/HemiFrame/Lib/SQLBuilder/Query.php
@@ -97,7 +97,7 @@ class Query
 
     private int $resultCacheLifeTime = 0;
 
-    private ?string $resultCacheKey;
+    private ?string $resultCacheKey = null;
 
     /**
      * @param array<mixed> $config