diff --git a/native/cpp/CommonCpp/DatabaseManagers/entities/EntityQueryHelpers.h b/native/cpp/CommonCpp/DatabaseManagers/entities/EntityQueryHelpers.h
--- a/native/cpp/CommonCpp/DatabaseManagers/entities/EntityQueryHelpers.h
+++ b/native/cpp/CommonCpp/DatabaseManagers/entities/EntityQueryHelpers.h
@@ -127,13 +127,13 @@
   sqlite3_step(preparedSQL);
 }
 
-void removeAllEntities(sqlite3 *db, std::string removeAllEntitiesSQL) {
+inline void removeAllEntities(sqlite3 *db, std::string removeAllEntitiesSQL) {
   SQLiteStatementWrapper preparedSQL(
       db, removeAllEntitiesSQL, "Failed to remove all entities.");
   sqlite3_step(preparedSQL);
 }
 
-void removeEntitiesByKeys(
+inline void removeEntitiesByKeys(
     sqlite3 *db,
     std::string removeEntitiesByKeysSQL,
     const std::vector<std::string> &keys) {
@@ -154,7 +154,7 @@
   sqlite3_step(preparedSQL);
 }
 
-void rekeyAllEntities(
+inline void rekeyAllEntities(
     sqlite3 *db,
     std::string rekeyAllEntitiesSQL,
     std::string from,
@@ -176,7 +176,7 @@
   sqlite3_step(preparedSQL);
 }
 
-std::string getSQLStatementArray(int length) {
+inline std::string getSQLStatementArray(int length) {
   std::stringstream array;
   array << "(";
   for (int i = 0; i < length - 1; i++) {
@@ -186,7 +186,7 @@
   return array.str();
 }
 
-void executeQuery(sqlite3 *db, std::string querySQL) {
+inline void executeQuery(sqlite3 *db, std::string querySQL) {
   char *err;
   sqlite3_exec(db, querySQL.c_str(), nullptr, nullptr, &err);
   if (err) {