From: huuyafwww <huuya1234fwww@gmail.com>
Date: Fri, 4 Oct 2024 17:39:02 +0000 (+0900)
Subject: fix: Fixed a bug that caused a syntax error when a function was specified to server_d... 
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd47fb5373076223352e6c2d40941d86988ac455;p=thirdparty%2Fsqlalchemy%2Fsqlalchemy.git

fix: Fixed a bug that caused a syntax error when a function was specified to server_default when creating a column in MySQL.
---

diff --git a/lib/sqlalchemy/dialects/mysql/base.py b/lib/sqlalchemy/dialects/mysql/base.py
index aa99bf4d68..b841a20445 100644
--- a/lib/sqlalchemy/dialects/mysql/base.py
+++ b/lib/sqlalchemy/dialects/mysql/base.py
@@ -1853,6 +1853,11 @@ class MySQLDDLCompiler(compiler.DDLCompiler):
                 colspec.append("DEFAULT " + default)
         return " ".join(colspec)
 
+    def get_column_default_string(self, column):
+        if hasattr(column.server_default, 'arg') and isinstance(column.server_default.arg, functions.FunctionElement):
+            return f'({column.server_default.arg})'
+        return super().get_column_default_string(column)
+
     def post_create_table(self, table):
         """Build table-level CREATE options like ENGINE and COLLATE."""