diff --git a/core/misc/cspell/dictionary.txt b/core/misc/cspell/dictionary.txt
index adaf63bb38..c9e0b9e9b6 100644
--- a/core/misc/cspell/dictionary.txt
+++ b/core/misc/cspell/dictionary.txt
@@ -577,7 +577,6 @@ johndoe
 jours
 jqueryui
 jsonapi
-jsonb
 jsonlint
 jssdk
 jumplinks
diff --git a/core/modules/pgsql/src/Driver/Database/pgsql/Schema.php b/core/modules/pgsql/src/Driver/Database/pgsql/Schema.php
index 74452a444f..adfee76ac9 100644
--- a/core/modules/pgsql/src/Driver/Database/pgsql/Schema.php
+++ b/core/modules/pgsql/src/Driver/Database/pgsql/Schema.php
@@ -468,7 +468,6 @@ public function getFieldTypeMap() {
       'serial:normal' => 'serial',
 
       'json:normal' => 'json',
-      'json:binary' => 'jsonb',
     ];
     return $map;
   }
diff --git a/core/modules/pgsql/tests/src/Kernel/pgsql/SchemaTest.php b/core/modules/pgsql/tests/src/Kernel/pgsql/SchemaTest.php
index 5a55217177..2c1c8d3566 100644
--- a/core/modules/pgsql/tests/src/Kernel/pgsql/SchemaTest.php
+++ b/core/modules/pgsql/tests/src/Kernel/pgsql/SchemaTest.php
@@ -244,67 +244,69 @@ public function testPgsqlExtensionExists(): void {
   }
 
   /**
-   * Tests json schema types.
-   *
-   * @param string $fieldType
-   *   The Drupal field type name.
-   * @param string $insertData
-   *   A JSON string to insert into the test_field column.
-   * @param string $selectField
-   *   A select field to retrieve data.
-   * @param array $selectPlaceholder
-   *   Placeholder values for the select field above.
-   * @param string $expected
-   *   The expected value to assert.
-   *
-   * @dataProvider providerTestJsonSchema
+   * Tests json schema type.
    */
-  public function testJsonSchema(string $fieldType, string $insertData, string $selectField, array $selectPlaceholder, string $expected): void {
+  public function testJsonSchema(): void {
     $table_specification = [
       'fields' => [
-        'id'  => ['type' => 'serial', 'not null' => TRUE],
-        'test_field'  => ['type' => $fieldType],
+        'id' => ['type' => 'serial', 'not null' => TRUE],
+        'test_field' => ['type' => 'json'],
       ],
       'primary key' => ['id'],
     ];
-
     $this->schema->createTable('test_json', $table_specification);
+    $this->assertTrue($this->schema->tableExists('test_json'), 'Table with database specific datatype was created.');
 
     $this->connection->insert('test_json')
-      ->values(['test_field' => $insertData])
+      ->fields([
+        'test_field' => '{"key": "value", "number": 0, "bool": true, "list": ["a","b","c"], "nested": {"key": "value"}}',
+      ])
       ->execute();
-    $query = $this->connection->select('test_json')
-      ->addExpression($selectField, NULL, $selectPlaceholder)
-      ->range(0, 1);
-
-    $actual = $query->execute()->fetchField(0);
-    $this->assertSame($expected, $actual);
-    $this->assertTrue($this->schema->tableExists('test_json'), 'Table with database specific datatype was created.');
-  }
-
-  /**
-   * Provides test arguments for json schema tests.
-   *
-   * @return \string[][]
-   *   The test arguments.
-   */
-  public function providerTestJsonSchema() {
-    return [
-      'json:normal' => [
-        'json',
-        '{"key": "value", "number": 0, "bool": true, "list": ["a","b","c"], "nested": {"key": "value"}}',
-        "test_field->:key",
-        [':key' => 'key'],
-        'value',
-      ],
-      'json:binary' => [
-        'jsonb',
-        '{"key": "value", "number": 0, "bool": true, "list": ["a", "b", "c"], "nested": {"key": "value"}}',
-        "test_field->:nested->:key",
-        [':nested' => ':nested', ':key' => 'key'],
-        'value',
-      ],
-    ];
+    // The '->' operator returns strings wrapped into quotes.
+    $query = $this->connection->select('test_json');
+    $query->addExpression('test_field -> :key', NULL, [
+      ':key' => 'key',
+    ]);
+    $actual = $query->execute()->fetchField();
+    $this->assertSame('"'. 'value' . '"', $actual);
+    // Testing nested strings using '->>' opearator.
+    $query = $this->connection->select('test_json');
+    $query->addExpression('test_field -> :nested ->> :key', NULL, [
+      ':nested' => 'nested',
+      ':key' => 'key',
+    ]);
+    $actual = $query->execute()->fetchField();
+    $this->assertSame('value', $actual);
+
+    // Testing boolean.
+    $query = $this->connection->select('test_json');
+    $query->addExpression('test_field ->> :bool', NULL, [
+      ':bool' => 'bool',
+    ]);
+    $actual = $query->execute()->fetchField();
+    $this->assertSame('true', $actual);
+    // Testing numbers.
+    $query = $this->connection->select('test_json');
+    $query->addExpression('test_field ->> :number', NULL, [
+      ':number' => 'number',
+    ]);
+    $actual = $query->execute()->fetchField();
+    $this->assertSame('0', $actual);
+
+    // Testing array.
+    $query = $this->connection->select('test_json');
+    $query->addExpression('test_field ->> :list', NULL, [
+      ':list' => 'list',
+    ]);
+    $actual = $query->execute()->fetchField();
+    $this->assertSame('["a","b","c"]', $actual);
+    // Testing array value.
+    $query = $this->connection->select('test_json');
+    $query->addExpression('test_field -> :list ->> 1', NULL, [
+      ':list' => 'list',
+    ]);
+    $actual = $query->execute()->fetchField();
+    $this->assertSame('b', $actual);
   }
 
 }