From 6b1c86c6ec7f852a4e12fca0044c4240a4ff0038 Mon Sep 17 00:00:00 2001
From: Nikolay Degterinsky <43110995+evillique@users.noreply.github.com>
Date: Mon, 10 Apr 2023 03:39:13 +0200
Subject: [PATCH] Don't use type conversion with String query parameters

---
 src/Interpreters/ReplaceQueryParameterVisitor.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Interpreters/ReplaceQueryParameterVisitor.cpp b/src/Interpreters/ReplaceQueryParameterVisitor.cpp
index fad9d4bbfb2..71f28f9fb2c 100644
--- a/src/Interpreters/ReplaceQueryParameterVisitor.cpp
+++ b/src/Interpreters/ReplaceQueryParameterVisitor.cpp
@@ -102,7 +102,10 @@ void ReplaceQueryParameterVisitor::visitQueryParameter(ASTPtr & ast)
     else
         literal = temp_column[0];
 
-    ast = addTypeConversionToAST(std::make_shared<ASTLiteral>(literal), type_name);
+    if (typeid_cast<const DataTypeString *>(&data_type))
+        ast = std::make_shared<ASTLiteral>(literal);
+    else
+        ast = addTypeConversionToAST(std::make_shared<ASTLiteral>(literal), type_name);
 
     /// Keep the original alias.
     ast->setAlias(alias);