From 5f085e78d7da774b31fcf3f701be9ea982c4eb8e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gr=C3=A9goire=20Paris?= <gregoire.paris@manomano.com>
Date: Thu, 14 Jan 2021 13:48:50 +0100
Subject: [PATCH] Expose support for transactional DDL or lack thereof

Clients may need that information, notably in the context of SQL
migrations.
---
 src/Platforms/AbstractPlatform.php | 8 ++++++++
 src/Platforms/MySQLPlatform.php    | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/src/Platforms/AbstractPlatform.php b/src/Platforms/AbstractPlatform.php
index 042fae29ee4..b5efed0da40 100644
--- a/src/Platforms/AbstractPlatform.php
+++ b/src/Platforms/AbstractPlatform.php
@@ -3118,6 +3118,14 @@ public function supportsTransactions()
         return true;
     }
 
+    /**
+     * Whether it is safe to wrap DDL statements in transactions
+     */
+    public function supportsTransactionalDDL(): bool
+    {
+        return true;
+    }
+
     /**
      * Whether the platform supports savepoints.
      *
diff --git a/src/Platforms/MySQLPlatform.php b/src/Platforms/MySQLPlatform.php
index d9607c3ef71..3ee8ac442b1 100644
--- a/src/Platforms/MySQLPlatform.php
+++ b/src/Platforms/MySQLPlatform.php
@@ -337,6 +337,14 @@ public function supportsColumnCollation()
         return true;
     }
 
+    /**
+     * @see https://dev.mysql.com/doc/internals/en/transactions-current-situation.html
+     */
+    public function supportsTransactionalDDL(): bool
+    {
+        return false;
+    }
+
     /**
      * {@inheritDoc}
      */