diff --git a/mysql_ch_replicator/converter.py b/mysql_ch_replicator/converter.py
index a6c6b57..a82f67d 100644
--- a/mysql_ch_replicator/converter.py
+++ b/mysql_ch_replicator/converter.py
@@ -465,9 +465,6 @@ def __convert_alter_table_add_column(self, db_name, table_name, tokens):
         if len(tokens) < 2:
             raise Exception('wrong tokens count', tokens)
 
-        if ',' in ' '.join(tokens):
-            raise Exception('add multiple columns not implemented', tokens)
-
         column_after = None
         column_first = False
         if tokens[-2].lower() == 'after':
@@ -522,9 +519,6 @@ def __convert_alter_table_add_column(self, db_name, table_name, tokens):
             self.db_replicator.clickhouse_api.execute_command(query)
 
     def __convert_alter_table_drop_column(self, db_name, table_name, tokens):
-        if ',' in ' '.join(tokens):
-            raise Exception('add multiple columns not implemented', tokens)
-
         if len(tokens) != 1:
             raise Exception('wrong tokens count', tokens)
 
@@ -547,9 +541,6 @@ def __convert_alter_table_modify_column(self, db_name, table_name, tokens):
         if len(tokens) < 2:
             raise Exception('wrong tokens count', tokens)
 
-        if ',' in ' '.join(tokens):
-            raise Exception('add multiple columns not implemented', tokens)
-
         column_name = strip_sql_name(tokens[0])
         column_type_mysql = tokens[1]
         column_type_mysql_parameters = ' '.join(tokens[2:])
@@ -578,9 +569,6 @@ def __convert_alter_table_change_column(self, db_name, table_name, tokens):
         if len(tokens) < 3:
             raise Exception('wrong tokens count', tokens)
 
-        if ',' in ' '.join(tokens):
-            raise Exception('add multiple columns not implemented', tokens)
-
         column_name = strip_sql_name(tokens[0])
         new_column_name = strip_sql_name(tokens[1])
         column_type_mysql = tokens[2]
diff --git a/test_mysql_ch_replicator.py b/test_mysql_ch_replicator.py
index 231005a..e54587f 100644
--- a/test_mysql_ch_replicator.py
+++ b/test_mysql_ch_replicator.py
@@ -135,7 +135,9 @@ def test_e2e_regular(config_file):
 
 
     mysql.execute(f"ALTER TABLE `{TEST_TABLE_NAME}` ADD `last_name` varchar(255); ")
-    mysql.execute(f"INSERT INTO `{TEST_TABLE_NAME}` (name, age, last_name) VALUES ('Mary', 24, 'Smith');", commit=True)
+    mysql.execute(f"ALTER TABLE `{TEST_TABLE_NAME}` ADD `price` decimal(10,2) DEFAULT NULL; ")
+
+    mysql.execute(f"INSERT INTO `{TEST_TABLE_NAME}` (name, age, last_name, price) VALUES ('Mary', 24, 'Smith', 3.2);", commit=True)
 
     assert_wait(lambda: len(ch.select(TEST_TABLE_NAME)) == 4)
     assert_wait(lambda: ch.select(TEST_TABLE_NAME, where="name='Mary'")[0]['last_name'] == 'Smith')