diff --git a/src/Column/ColumnDefinitionBuilder.php b/src/Column/ColumnDefinitionBuilder.php
index d0f40d09..82698f69 100644
--- a/src/Column/ColumnDefinitionBuilder.php
+++ b/src/Column/ColumnDefinitionBuilder.php
@@ -51,11 +51,13 @@ public function build(ColumnSchemaInterface $column): string
 
     protected function getDbType(ColumnSchemaInterface $column): string
     {
+        $size = $column->getSize();
+
         /** @psalm-suppress DocblockTypeContradiction */
-        return match ($column->getType()) {
+        $dbType = $column->getDbType() ?? match ($column->getType()) {
             ColumnType::BOOLEAN => 'bit',
             ColumnType::BIT => match (true) {
-                ($size = $column->getSize()) === null => 'bigint',
+                $size === null => 'bigint',
                 $size === 1 => 'bit',
                 $size <= 8 => 'tinyint',
                 $size <= 16 => 'smallint',
@@ -72,7 +74,7 @@ protected function getDbType(ColumnSchemaInterface $column): string
             ColumnType::DECIMAL => 'decimal',
             ColumnType::MONEY => 'money',
             ColumnType::CHAR => 'nchar',
-            ColumnType::STRING => 'nvarchar',
+            ColumnType::STRING => 'nvarchar(' . (($size ?? '255') ?: 'max') . ')',
             ColumnType::TEXT => 'nvarchar(max)',
             ColumnType::BINARY => 'varbinary(max)',
             ColumnType::UUID => 'uniqueidentifier',
@@ -80,10 +82,18 @@ protected function getDbType(ColumnSchemaInterface $column): string
             ColumnType::TIMESTAMP => 'datetime2',
             ColumnType::DATE => 'date',
             ColumnType::TIME => 'time',
-            ColumnType::ARRAY => 'json',
-            ColumnType::STRUCTURED => 'json',
-            ColumnType::JSON => 'json',
-            default => 'varchar',
+            ColumnType::ARRAY => 'nvarchar(max)',
+            ColumnType::STRUCTURED => 'nvarchar(max)',
+            ColumnType::JSON => 'nvarchar(max)',
+            default => 'nvarchar',
+        };
+
+        return match ($dbType) {
+            'timestamp' => 'datetime2',
+            'varchar' => 'varchar(' . ($size ?: 'max') . ')',
+            'nvarchar' => 'nvarchar(' . ($size ?: 'max') . ')',
+            'varbinary' => 'varbinary(' . ($size ?: 'max') . ')',
+            default => $dbType,
         };
     }
 }
diff --git a/tests/Provider/QueryBuilderProvider.php b/tests/Provider/QueryBuilderProvider.php
index d71c7f8f..3e3c931d 100644
--- a/tests/Provider/QueryBuilderProvider.php
+++ b/tests/Provider/QueryBuilderProvider.php
@@ -6,6 +6,7 @@
 
 use Yiisoft\Db\Constant\PseudoType;
 use Yiisoft\Db\Expression\Expression;
+use Yiisoft\Db\Mssql\Column\ColumnBuilder;
 use Yiisoft\Db\Mssql\Tests\Support\TestTrait;
 use Yiisoft\Db\Query\Query;
 use Yiisoft\Db\QueryBuilder\Condition\InCondition;
@@ -349,7 +350,7 @@ public static function buildColumnDefinition(): array
         $values[PseudoType::UBIGPK][0] = 'bigint IDENTITY PRIMARY KEY';
         $values[PseudoType::UUID_PK][0] = 'uniqueidentifier PRIMARY KEY DEFAULT newid()';
         $values[PseudoType::UUID_PK_SEQ][0] = 'uniqueidentifier PRIMARY KEY DEFAULT newsequentialid()';
-        $values['STRING'][0] = 'nvarchar';
+        $values['STRING'][0] = 'nvarchar(255)';
         $values['STRING(100)'][0] = 'nvarchar(100)';
         $values['primaryKey()'][0] = 'int IDENTITY PRIMARY KEY';
         $values['primaryKey(false)'][0] = 'int PRIMARY KEY';
@@ -364,7 +365,7 @@ public static function buildColumnDefinition(): array
         $values['bit()'][0] = 'bigint';
         $values['bit(1)'][0] = 'bit';
         $values['bit(8)'][0] = 'tinyint';
-        $values['bit(1000)'][0] = 'varbinary(125)';
+        $values['bit(64)'][0] = 'bigint';
         $values['tinyint(2)'][0] = 'tinyint';
         $values['smallint(4)'][0] = 'smallint';
         $values['integer()'][0] = 'int';
@@ -381,7 +382,7 @@ public static function buildColumnDefinition(): array
         $values['char(null)'][0] = 'nchar';
         $values['string()'][0] = 'nvarchar(255)';
         $values['string(100)'][0] = 'nvarchar(100)';
-        $values['string(null)'][0] = 'nvarchar';
+        $values['string(null)'][0] = 'nvarchar(255)';
         $values['text()'][0] = 'nvarchar(max)';
         $values['text(1000)'][0] = 'nvarchar(max)';
         $values['binary()'][0] = 'varbinary(max)';
@@ -393,18 +394,23 @@ public static function buildColumnDefinition(): array
         $values['timestamp(6)'][0] = 'datetime2(6)';
         $values['timestamp(null)'][0] = 'datetime2';
         $values['uuid()'][0] = 'uniqueidentifier';
-        $values["extra('bar')"][0] = 'nvarchar(255) bar';
+        $values['array()'][0] = 'nvarchar(max)';
+        $values['structured()'][0] = 'nvarchar(max)';
+        $values["structured('json')"] = ['varbinary(max)', ColumnBuilder::structured('varbinary(max)')];
+        $values['json()'][0] = 'nvarchar(max)';
+        $values['json(100)'][0] = 'nvarchar(max)';
+        $values["extra('NOT NULL')"][0] = 'nvarchar(255) NOT NULL';
         $values["extra('')"][0] = 'nvarchar(255)';
-        $values["check('value > 5')"][0] = 'nvarchar(255) CHECK (value > 5)';
-        $values["check('')"][0] = 'nvarchar(255)';
-        $values['check(null)'][0] = 'nvarchar(255)';
+        $values["check('value > 5')"][0] = 'int CHECK ([col_59] > 5)';
+        $values["check('')"][0] = 'int';
+        $values['check(null)'][0] = 'int';
         $values["comment('comment')"][0] = 'nvarchar(255)';
         $values["comment('')"][0] = 'nvarchar(255)';
         $values['comment(null)'][0] = 'nvarchar(255)';
         $values["defaultValue('value')"][0] = "nvarchar(255) DEFAULT 'value'";
         $values["defaultValue('')"][0] = "nvarchar(255) DEFAULT ''";
         $values['defaultValue(null)'][0] = 'nvarchar(255) DEFAULT NULL';
-        $values['defaultValue($expression)'][0] = 'nvarchar(255) DEFAULT expression';
+        $values['defaultValue($expression)'][0] = 'int DEFAULT (1 + 2)';
         $values['notNull()->defaultValue(null)'][0] = 'nvarchar(255) NOT NULL';
         $values["integer()->defaultValue('')"][0] = 'int DEFAULT NULL';
         $values['notNull()'][0] = 'nvarchar(255) NOT NULL';