From 5c8cf00625ad0fea9568a4aee723ea8cc43a936d Mon Sep 17 00:00:00 2001
From: hosein <49957586+hos-b@users.noreply.github.com>
Date: Thu, 21 Aug 2025 20:08:32 +0200
Subject: [PATCH] Add a generic Dynamic type for db-specific columns (#43)

---
 include/sqlgen/dynamic/Type.hpp  | 2 +-
 include/sqlgen/dynamic/types.hpp | 5 +++++
 src/sqlgen/mysql/to_sql.cpp      | 2 ++
 src/sqlgen/postgres/to_sql.cpp   | 4 +++-
 src/sqlgen/sqlite/to_sql.cpp     | 2 ++
 5 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/include/sqlgen/dynamic/Type.hpp b/include/sqlgen/dynamic/Type.hpp
index 3369eff..b105b1b 100644
--- a/include/sqlgen/dynamic/Type.hpp
+++ b/include/sqlgen/dynamic/Type.hpp
@@ -13,7 +13,7 @@ using Type =
                      types::Float64, types::Int8, types::Int16, types::Int32,
                      types::Int64, types::UInt8, types::UInt16, types::UInt32,
                      types::UInt64, types::Text, types::Date, types::Timestamp,
-                     types::TimestampWithTZ, types::VarChar>;
+                     types::TimestampWithTZ, types::VarChar, types::Dynamic>;
 
 }  // namespace sqlgen::dynamic
 
diff --git a/include/sqlgen/dynamic/types.hpp b/include/sqlgen/dynamic/types.hpp
index 500faef..5bb9bbe 100644
--- a/include/sqlgen/dynamic/types.hpp
+++ b/include/sqlgen/dynamic/types.hpp
@@ -93,6 +93,11 @@ struct VarChar {
   Properties properties;
 };
 
+struct Dynamic {
+  std::string type_name;
+  Properties properties;
+};
+
 }  // namespace sqlgen::dynamic::types
 
 #endif
diff --git a/src/sqlgen/mysql/to_sql.cpp b/src/sqlgen/mysql/to_sql.cpp
index bbaa119..2fe26ed 100644
--- a/src/sqlgen/mysql/to_sql.cpp
+++ b/src/sqlgen/mysql/to_sql.cpp
@@ -865,6 +865,8 @@ std::string type_to_sql(const dynamic::Type& _type) noexcept {
     } else if constexpr (std::is_same_v<T, dynamic::types::Timestamp> ||
                          std::is_same_v<T, dynamic::types::TimestampWithTZ>) {
       return "DATETIME";
+    } else if constexpr (std::is_same_v<T, dynamic::types::Dynamic>) {
+      return _t.type_name;
 
     } else if constexpr (std::is_same_v<T, dynamic::types::Unknown>) {
       return "TEXT";
diff --git a/src/sqlgen/postgres/to_sql.cpp b/src/sqlgen/postgres/to_sql.cpp
index 43aabbc..2848935 100644
--- a/src/sqlgen/postgres/to_sql.cpp
+++ b/src/sqlgen/postgres/to_sql.cpp
@@ -751,9 +751,11 @@ std::string type_to_sql(const dynamic::Type& _type) noexcept {
     } else if constexpr (std::is_same_v<T, dynamic::types::TimestampWithTZ>) {
       return "TIMESTAMP WITH TIME ZONE";
 
+    } else if constexpr (std::is_same_v<T, dynamic::types::Dynamic>) {
+      return _t.type_name;
+
     } else if constexpr (std::is_same_v<T, dynamic::types::Unknown>) {
       return "TEXT";
-
     } else {
       static_assert(rfl::always_false_v<T>, "Not all cases were covered.");
     }
diff --git a/src/sqlgen/sqlite/to_sql.cpp b/src/sqlgen/sqlite/to_sql.cpp
index 747c284..c77cf8b 100644
--- a/src/sqlgen/sqlite/to_sql.cpp
+++ b/src/sqlgen/sqlite/to_sql.cpp
@@ -740,6 +740,8 @@ std::string type_to_sql(const dynamic::Type& _type) noexcept {
                          std::is_same_v<T, dynamic::types::Timestamp> ||
                          std::is_same_v<T, dynamic::types::TimestampWithTZ>) {
       return "TEXT";
+    } else if constexpr (std::is_same_v<T, dynamic::types::Dynamic>) {
+      return _t.type_name;
     } else {
       static_assert(rfl::always_false_v<T>, "Not all cases were covered.");
     }