diff --git a/framework/db/mssql/QueryBuilder.php b/framework/db/mssql/QueryBuilder.php
index dcbcdf4e38..c6791070f0 100644
--- a/framework/db/mssql/QueryBuilder.php
+++ b/framework/db/mssql/QueryBuilder.php
@@ -230,6 +230,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
      * @param Query $values
      * @param array $params
      * @return string SQL
+     * @throws NotSupportedException
      */
     protected function buildSubqueryInCondition($operator, $columns, $values, &$params)
     {
diff --git a/framework/db/mysql/Schema.php b/framework/db/mysql/Schema.php
index 6f9afb2c25..1f141347cf 100644
--- a/framework/db/mysql/Schema.php
+++ b/framework/db/mysql/Schema.php
@@ -243,6 +243,7 @@ class Schema extends \yii\db\Schema
     /**
      * Collects the foreign key column details for the given table.
      * @param TableSchema $table the table metadata
+     * @throws \Exception
      */
     protected function findConstraints($table)
     {
diff --git a/framework/db/sqlite/QueryBuilder.php b/framework/db/sqlite/QueryBuilder.php
index ebcab8a447..3f00e21731 100644
--- a/framework/db/sqlite/QueryBuilder.php
+++ b/framework/db/sqlite/QueryBuilder.php
@@ -315,6 +315,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
      * @param Query $values
      * @param array $params
      * @return string SQL
+     * @throws NotSupportedException
      */
     protected function buildSubqueryInCondition($operator, $columns, $values, &$params)
     {