diff --git a/src/baseexpression.cpp b/src/baseexpression.cpp
index b0a9275..f3827d1 100644
--- a/src/baseexpression.cpp
+++ b/src/baseexpression.cpp
@@ -1051,39 +1051,39 @@ void BaseExpression::put_alias(const pt::WTextStream & alias_name_prefix, int in
 
 
 
-void BaseExpression::put_string(const char * str, const FT & field_type, bool add_quotes)
+void BaseExpression::put_string(const char * str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
-	put_string_generic(str, field_type, add_quotes);
+	put_string_generic(str, field_type, add_quotes, model_env);
 }
 
 
-void BaseExpression::put_string(const wchar_t * str, const FT & field_type, bool add_quotes)
+void BaseExpression::put_string(const wchar_t * str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
-	put_string_generic(str, field_type, add_quotes);
+	put_string_generic(str, field_type, add_quotes, model_env);
 }
 
 
-void BaseExpression::put_string(const std::string & str, const FT & field_type, bool add_quotes)
+void BaseExpression::put_string(const std::string & str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
-	put_string_generic(str, field_type, add_quotes);
+	put_string_generic(str, field_type, add_quotes, model_env);
 }
 
 
-void BaseExpression::put_string(const std::wstring & str, const FT & field_type, bool add_quotes)
+void BaseExpression::put_string(const std::wstring & str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
-	put_string_generic(str, field_type, add_quotes);
+	put_string_generic(str, field_type, add_quotes, model_env);
 }
 
 
-void BaseExpression::put_stream(const pt::TextStream & str, const FT & field_type, bool add_quotes)
+void BaseExpression::put_stream(const pt::TextStream & str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
-	put_string_generic(str, field_type, add_quotes);
+	put_string_generic(str, field_type, add_quotes, model_env);
 }
 
 
-void BaseExpression::put_stream(const pt::WTextStream & str, const FT & field_type, bool add_quotes)
+void BaseExpression::put_stream(const pt::WTextStream & str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
-	put_string_generic(str, field_type, add_quotes);
+	put_string_generic(str, field_type, add_quotes, model_env);
 }
 
 
@@ -1186,50 +1186,50 @@ void BaseExpression::alias_to_stream(pt::TextStream & stream, const pt::WTextStr
 
 
 
-void BaseExpression::string_to_stream(pt::TextStream & stream, const char * str, const FT & field_type, bool add_quotes)
+void BaseExpression::string_to_stream(pt::TextStream & stream, const char * str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
 	this->out_stream = &stream;
-	put_string(str, field_type, add_quotes);
+	put_string(str, field_type, add_quotes, model_env);
 	this->out_stream = nullptr;
 }
 
 
-void BaseExpression::string_to_stream(pt::TextStream & stream, const wchar_t * str, const FT & field_type, bool add_quotes)
+void BaseExpression::string_to_stream(pt::TextStream & stream, const wchar_t * str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
 	this->out_stream = &stream;
-	put_string(str, field_type, add_quotes);
+	put_string(str, field_type, add_quotes, model_env);
 	this->out_stream = nullptr;
 }
 
 
-void BaseExpression::string_to_stream(pt::TextStream & stream, const std::string & str, const FT & field_type, bool add_quotes)
+void BaseExpression::string_to_stream(pt::TextStream & stream, const std::string & str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
 	this->out_stream = &stream;
-	put_string(str, field_type, add_quotes);
+	put_string(str, field_type, add_quotes, model_env);
 	this->out_stream = nullptr;
 }
 
 
-void BaseExpression::string_to_stream(pt::TextStream & stream, const std::wstring & str, const FT & field_type, bool add_quotes)
+void BaseExpression::string_to_stream(pt::TextStream & stream, const std::wstring & str, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
 	this->out_stream = &stream;
-	put_string(str, field_type, add_quotes);
+	put_string(str, field_type, add_quotes, model_env);
 	this->out_stream = nullptr;
 }
 
 
-void BaseExpression::stream_to_stream(pt::TextStream & stream_out, const pt::TextStream & stream_in, const FT & field_type, bool add_quotes)
+void BaseExpression::stream_to_stream(pt::TextStream & stream_out, const pt::TextStream & stream_in, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
 	this->out_stream = &stream_out;
-	put_stream(stream_in, field_type, add_quotes);
+	put_stream(stream_in, field_type, add_quotes, model_env);
 	this->out_stream = nullptr;
 }
 
 
-void BaseExpression::stream_to_stream(pt::TextStream & stream_out, const pt::WTextStream & stream_in, const FT & field_type, bool add_quotes)
+void BaseExpression::stream_to_stream(pt::TextStream & stream_out, const pt::WTextStream & stream_in, const FT & field_type, bool add_quotes, ModelEnv * model_env)
 {
 	this->out_stream = &stream_out;
-	put_stream(stream_in, field_type, add_quotes);
+	put_stream(stream_in, field_type, add_quotes, model_env);
 	this->out_stream = nullptr;
 }
 
diff --git a/src/baseexpression.h b/src/baseexpression.h
index 7d7ac35..af16390 100644
--- a/src/baseexpression.h
+++ b/src/baseexpression.h
@@ -253,12 +253,12 @@ public:
 	virtual void put_alias(const pt::WTextStream & alias_name, int index);
 	virtual void put_alias(const pt::WTextStream & alias_name_prefix, int index, const wchar_t * alias_name_postfix);
 
-	virtual void put_string(const char * str, const FT & field_type, bool add_quotes = false);
-	virtual void put_string(const wchar_t * str, const FT & field_type, bool add_quotes = false);
-	virtual void put_string(const std::string & str, const FT & field_type, bool add_quotes = false);
-	virtual void put_string(const std::wstring & str, const FT & field_type, bool add_quotes = false);
-	virtual void put_stream(const pt::TextStream & str, const FT & field_type, bool add_quotes = false);
-	virtual void put_stream(const pt::WTextStream & str, const FT & field_type, bool add_quotes = false);
+	virtual void put_string(const char * str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void put_string(const wchar_t * str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void put_string(const std::string & str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void put_string(const std::wstring & str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void put_stream(const pt::TextStream & str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void put_stream(const pt::WTextStream & str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
 
 	virtual void schema_table_to_stream(pt::TextStream & stream, const wchar_t * schema_name, const wchar_t * table_name);
 	virtual void schema_table_to_stream(pt::TextStream & stream, const pt::WTextStream & schema_name, const pt::WTextStream & table_name);
@@ -273,12 +273,12 @@ public:
 	virtual void alias_to_stream(pt::TextStream & stream, const pt::WTextStream & alias_name, int index);
 	virtual void alias_to_stream(pt::TextStream & stream, const pt::WTextStream & alias_name_prefix, int index, const wchar_t * alias_name_postfix);
 
-	virtual void string_to_stream(pt::TextStream & stream, const char * str, const FT & field_type, bool add_quotes = false);
-	virtual void string_to_stream(pt::TextStream & stream, const wchar_t * str, const FT & field_type, bool add_quotes = false);
-	virtual void string_to_stream(pt::TextStream & stream, const std::string & str, const FT & field_type, bool add_quotes = false);
-	virtual void string_to_stream(pt::TextStream & stream, const std::wstring & str, const FT & field_type, bool add_quotes = false);
-	virtual void stream_to_stream(pt::TextStream & stream_out, const pt::TextStream & stream_in, const FT & field_type, bool add_quotes = false);
-	virtual void stream_to_stream(pt::TextStream & stream_out, const pt::WTextStream & stream_in, const FT & field_type, bool add_quotes = false);
+	virtual void string_to_stream(pt::TextStream & stream, const char * str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void string_to_stream(pt::TextStream & stream, const wchar_t * str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void string_to_stream(pt::TextStream & stream, const std::string & str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void string_to_stream(pt::TextStream & stream, const std::wstring & str, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void stream_to_stream(pt::TextStream & stream_out, const pt::TextStream & stream_in, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
+	virtual void stream_to_stream(pt::TextStream & stream_out, const pt::WTextStream & stream_in, const FT & field_type, bool add_quotes = false, ModelEnv * model_env = nullptr);
 
 
 
diff --git a/src/finder.h b/src/finder.h
index c37f30c..fbf2182 100644
--- a/src/finder.h
+++ b/src/finder.h
@@ -846,6 +846,84 @@ public:
 	}
 
 
+	Finder<ModelClass> & esc_like(const char * str, bool add_quotes = true, const FT & field_type = morm::FT::default_type)
+	{
+		if( out_stream && db_expression )
+		{
+			model_env.use_escaping_for_like = true;
+			db_expression->string_to_stream(*out_stream, str, field_type, add_quotes, &model_env);
+			model_env.use_escaping_for_like = false;
+		}
+
+		return *this;
+	}
+
+
+	Finder<ModelClass> & esc_like(const wchar_t * str, bool add_quotes = true, const FT & field_type = morm::FT::default_type)
+	{
+		if( out_stream && db_expression )
+		{
+			model_env.use_escaping_for_like = true;
+			db_expression->string_to_stream(*out_stream, str, field_type, add_quotes, &model_env);
+			model_env.use_escaping_for_like = false;
+		}
+
+		return *this;
+	}
+
+
+	Finder<ModelClass> & esc_like(const std::string & str, bool add_quotes = true, const FT & field_type = morm::FT::default_type)
+	{
+		if( out_stream && db_expression )
+		{
+			model_env.use_escaping_for_like = true;
+			db_expression->string_to_stream(*out_stream, str, field_type, add_quotes, &model_env);
+			model_env.use_escaping_for_like = false;
+		}
+
+		return *this;
+	}
+
+
+	Finder<ModelClass> & esc_like(const std::wstring & str, bool add_quotes = true, const FT & field_type = morm::FT::default_type)
+	{
+		if( out_stream && db_expression )
+		{
+			model_env.use_escaping_for_like = true;
+			db_expression->string_to_stream(*out_stream, str, field_type, add_quotes, &model_env);
+			model_env.use_escaping_for_like = false;
+		}
+
+		return *this;
+	}
+
+
+	Finder<ModelClass> & esc_like(const pt::TextStream & str, bool add_quotes = true, const FT & field_type = morm::FT::default_type)
+	{
+		if( out_stream && db_expression )
+		{
+			model_env.use_escaping_for_like = true;
+			db_expression->stream_to_stream(*out_stream, str, field_type, add_quotes, &model_env);
+			model_env.use_escaping_for_like = false;
+		}
+
+		return *this;
+	}
+
+
+	Finder<ModelClass> & esc_like(const pt::WTextStream & str, bool add_quotes = true, const FT & field_type = morm::FT::default_type)
+	{
+		if( out_stream && db_expression )
+		{
+			model_env.use_escaping_for_like = true;
+			db_expression->stream_to_stream(*out_stream, str, field_type, add_quotes, &model_env);
+			model_env.use_escaping_for_like = false;
+		}
+
+		return *this;
+	}
+
+
 	/*
 	 * like
 	 */