diff --git a/src/Parsers/ASTAssignment.h b/src/Parsers/ASTAssignment.h
index 6753711f9e3..88d4bb96c15 100644
--- a/src/Parsers/ASTAssignment.h
+++ b/src/Parsers/ASTAssignment.h
@@ -10,21 +10,18 @@ class ASTAssignment : public IAST
 {
 public:
     String column_name;
-    ASTPtr expression;
+
+    ASTPtr expression() const
+    {
+        return children.at(0);
+    }
 
     String getID(char delim) const override { return "Assignment" + (delim + column_name); }
 
     ASTPtr clone() const override
     {
         auto res = std::make_shared<ASTAssignment>(*this);
-        res->children.clear();
-
-        if (expression)
-        {
-            res->expression = expression->clone();
-            res->children.push_back(res->expression);
-        }
-
+        res->children = { expression()->clone() };
         return res;
     }
 
@@ -37,7 +34,7 @@ protected:
 
         settings.ostr << (settings.hilite ? hilite_operator : "") << " = " << (settings.hilite ? hilite_none : "");
 
-        expression->formatImpl(settings, state, frame);
+        expression()->formatImpl(settings, state, frame);
     }
 };
 
diff --git a/src/Parsers/ParserAlterQuery.cpp b/src/Parsers/ParserAlterQuery.cpp
index 7050614007e..b3f40eb42eb 100644
--- a/src/Parsers/ParserAlterQuery.cpp
+++ b/src/Parsers/ParserAlterQuery.cpp
@@ -588,7 +588,6 @@ bool ParserAlterCommand::parseImpl(Pos & pos, ASTPtr & node, Expected & expected
         }
         else
             return false;
-
     }
 
     if (command->col_decl)
@@ -601,6 +600,14 @@ bool ParserAlterCommand::parseImpl(Pos & pos, ASTPtr & node, Expected & expected
         command->children.push_back(command->order_by);
     if (command->sample_by)
         command->children.push_back(command->sample_by);
+    if (command->index_decl)
+        command->children.push_back(command->index_decl);
+    if (command->index)
+        command->children.push_back(command->index);
+    if (command->constraint_decl)
+        command->children.push_back(command->constraint_decl);
+    if (command->constraint)
+        command->children.push_back(command->constraint);
     if (command->predicate)
         command->children.push_back(command->predicate);
     if (command->update_assignments)
@@ -613,6 +620,10 @@ bool ParserAlterCommand::parseImpl(Pos & pos, ASTPtr & node, Expected & expected
         command->children.push_back(command->ttl);
     if (command->settings_changes)
         command->children.push_back(command->settings_changes);
+    if (command->select)
+        command->children.push_back(command->select);
+    if (command->rename_to)
+        command->children.push_back(command->rename_to);
 
     return true;
 }
@@ -656,12 +667,13 @@ bool ParserAssignment::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
     if (!s_equals.ignore(pos, expected))
         return false;
 
-    if (!p_expression.parse(pos, assignment->expression, expected))
+    ASTPtr expression;
+    if (!p_expression.parse(pos, expression, expected))
         return false;
 
     tryGetIdentifierNameInto(column, assignment->column_name);
-    if (assignment->expression)
-        assignment->children.push_back(assignment->expression);
+    if (expression)
+        assignment->children.push_back(expression);
 
     return true;
 }
diff --git a/src/Storages/MutationCommands.cpp b/src/Storages/MutationCommands.cpp
index daa7665403f..f832e674444 100644
--- a/src/Storages/MutationCommands.cpp
+++ b/src/Storages/MutationCommands.cpp
@@ -47,7 +47,7 @@ std::optional<MutationCommand> MutationCommand::parse(ASTAlterCommand * command,
         for (const ASTPtr & assignment_ast : command->update_assignments->children)
         {
             const auto & assignment = assignment_ast->as<ASTAssignment &>();
-            auto insertion = res.column_to_update_expression.emplace(assignment.column_name, assignment.expression);
+            auto insertion = res.column_to_update_expression.emplace(assignment.column_name, assignment.expression());
             if (!insertion.second)
                 throw Exception("Multiple assignments in the single statement to column " + backQuote(assignment.column_name),
                     ErrorCodes::MULTIPLE_ASSIGNMENTS_TO_COLUMN);
diff --git a/tests/queries/0_stateless/01599_mutation_query_params.reference b/tests/queries/0_stateless/01599_mutation_query_params.reference
new file mode 100644
index 00000000000..8e6c69b87b2
--- /dev/null
+++ b/tests/queries/0_stateless/01599_mutation_query_params.reference
@@ -0,0 +1,2 @@
+2	1
+1	1
diff --git a/tests/queries/0_stateless/01599_mutation_query_params.sh b/tests/queries/0_stateless/01599_mutation_query_params.sh
new file mode 100755
index 00000000000..6bc12b5409e
--- /dev/null
+++ b/tests/queries/0_stateless/01599_mutation_query_params.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+. "$CURDIR"/../shell_config.sh
+
+
+$CLICKHOUSE_CLIENT -n --query "
+DROP TABLE IF EXISTS test;
+
+CREATE TABLE test
+(
+  id UUID,
+  date_time DateTime,
+  x UInt32,
+  y UInt32
+) ENGINE = MergeTree()
+PARTITION BY toYYYYMMDD(date_time)
+ORDER BY (date_time);
+
+INSERT INTO test (x, y) VALUES (2, 1);
+"
+
+$CLICKHOUSE_CLIENT --query "SELECT x, y FROM test"
+
+$CLICKHOUSE_CLIENT --mutations_sync 1 --param_x 1 --param_y 1 --query "
+ALTER TABLE test
+UPDATE x = {x:UInt32}
+WHERE y = {y:UInt32};
+"
+
+$CLICKHOUSE_CLIENT --query "SELECT x, y FROM test"
+$CLICKHOUSE_CLIENT --query "DROP TABLE test"