diff --git a/src/Functions/IFunction.h b/src/Functions/IFunction.h
index b2dcf0ad98c..0bd52e835cc 100644
--- a/src/Functions/IFunction.h
+++ b/src/Functions/IFunction.h
@@ -186,6 +186,7 @@ public:
     /// See the comment for the same method in IFunctionBase
     virtual bool isDeterministic() const = 0;
     virtual bool isDeterministicInScopeOfQuery() const = 0;
+    virtual bool isInjective(const Block &) const = 0;
 
     /// Override and return true if function needs to depend on the state of the data.
     virtual bool isStateful() const = 0;
diff --git a/src/Functions/IFunctionAdaptors.h b/src/Functions/IFunctionAdaptors.h
index 9291e721a91..82afaad4c27 100644
--- a/src/Functions/IFunctionAdaptors.h
+++ b/src/Functions/IFunctionAdaptors.h
@@ -96,6 +96,8 @@ public:
 
     bool isDeterministicInScopeOfQuery() const final { return impl->isDeterministicInScopeOfQuery(); }
 
+    bool isInjective(const Block & block) const final { return impl->isInjective(block); }
+
     bool isStateful() const final { return impl->isStateful(); }
 
     bool isVariadic() const final { return impl->isVariadic(); }
@@ -226,6 +228,7 @@ public:
 
     bool isDeterministic() const override { return function->isDeterministic(); }
     bool isDeterministicInScopeOfQuery() const override { return function->isDeterministicInScopeOfQuery(); }
+    bool isInjective(const Block &block) const override { return function->isInjective(block); }
 
     String getName() const override { return function->getName(); }
     bool isStateful() const override { return function->isStateful(); }
diff --git a/src/Functions/IFunctionImpl.h b/src/Functions/IFunctionImpl.h
index 12461bbf402..116363705de 100644
--- a/src/Functions/IFunctionImpl.h
+++ b/src/Functions/IFunctionImpl.h
@@ -152,6 +152,7 @@ public:
     /// Properties from IFunctionOverloadResolver. See comments in IFunction.h
     virtual bool isDeterministic() const { return true; }
     virtual bool isDeterministicInScopeOfQuery() const { return true; }
+    virtual bool isInjective(const Block &) const { return false; }
     virtual bool isStateful() const { return false; }
     virtual bool isVariadic() const { return false; }