diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index 0b170765..bba89642 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -39,6 +39,7 @@ jobs:
           - '8.0'
           - '8.1'
           - '8.2'
+          - '8.3'
 
     steps:
       - name: Checkout.
@@ -66,8 +67,10 @@ jobs:
           FULL_BRANCH_NAME: ${{ env.FULL_BRANCH_NAME }}
           WORK_PACKAGE_URL: ${{ env.WORK_PACKAGE_URL }}
 
-      - name: Install dependencies with composer.
-        run: composer update --no-interaction --no-progress --optimize-autoloader --ansi
-
       - name: Static analysis.
+        if: ${{ matrix.php != '8.0' }}
         run: vendor/bin/psalm --config=${{ inputs.psalm-config }} --shepherd --stats --output-format=github --php-version=${{ matrix.php }}
+
+      - name: Static analysis.
+        if: ${{ matrix.php == '8.0' }}
+        run: vendor/bin/psalm --config=psalm4.xml --shepherd --stats --output-format=github --php-version=${{ matrix.php }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e15aba8..b2b24f21 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Enh #286: Change property `Schema::$typeMap` to constant `Schema::TYPE_MAP` (@Tigrov)
 - Bug #287: Fix `DMLQueryBuilder::insertWithReturningPks()` and `Command::insertWithReturningPks()` methods (@Tigrov)
+- Enh #292: Minor refactoring of `Command` and `Quoter` (@Tigrov)
 
 ## 1.1.0 November 12, 2023
 
diff --git a/composer.json b/composer.json
index 29561e3e..90826a54 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         "rector/rector": "^0.19",
         "roave/infection-static-analysis-plugin": "^1.16",
         "spatie/phpunit-watcher": "^1.23",
-        "vimeo/psalm": "^4.3|^5.6",
+        "vimeo/psalm": "^4.30|^5.20",
         "yiisoft/aliases": "^2.0",
         "yiisoft/cache-file": "^3.1",
         "yiisoft/var-dumper": "^1.5"
diff --git a/psalm.xml b/psalm.xml
index 23bfcce1..5001d0a7 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -14,4 +14,7 @@
         <directory name="vendor" />
     </ignoreFiles>
   </projectFiles>
+  <issueHandlers>
+    <RiskyTruthyFalsyComparison errorLevel="suppress" />
+  </issueHandlers>
 </psalm>
diff --git a/psalm4.xml b/psalm4.xml
new file mode 100644
index 00000000..23bfcce1
--- /dev/null
+++ b/psalm4.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<psalm
+  errorLevel="1"
+  findUnusedBaselineEntry="true"
+  findUnusedCode="false"
+  resolveFromConfigFile="true"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="https://getpsalm.org/schema/config"
+  xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+  <projectFiles>
+    <directory name="src" />
+      <ignoreFiles>
+        <directory name="vendor" />
+    </ignoreFiles>
+  </projectFiles>
+</psalm>
diff --git a/src/Command.php b/src/Command.php
index 69e30f76..c7c665b7 100644
--- a/src/Command.php
+++ b/src/Command.php
@@ -15,7 +15,7 @@ final class Command extends AbstractPdoCommand
     public function insertWithReturningPks(string $table, array $columns): bool|array
     {
         if (empty($this->db->getSchema()->getTableSchema($table)?->getPrimaryKey())) {
-            if (parent::insert($table, $columns)->execute() === 0) {
+            if ($this->insert($table, $columns)->execute() === 0) {
                 return false;
             }
 
diff --git a/src/Quoter.php b/src/Quoter.php
index 2a7fd735..5ab8d06c 100644
--- a/src/Quoter.php
+++ b/src/Quoter.php
@@ -25,7 +25,7 @@ public function quoteColumnName(string $name): string
 
     public function getTableNameParts(string $name, bool $withColumn = false): array
     {
-        if (preg_match_all('/([^.\[\]]+)|\[([^\[\]]+)]/', $name, $matches)) {
+        if (preg_match_all('/([^.\[\]]+)|\[([^\[\]]+)]/', $name, $matches) > 0) {
             $parts = array_slice($matches[0], -4, 4);
         } else {
             $parts = [$name];