Add size() function to mysql::char_result_t #562

include/sqlpp11/mysql/char_result.h

@@ -68,6 +68,11 @@ namespace sqlpp
         return _handle == rhs._handle;
       }
 
+      size_t size() const
+      {
+        return _handle ? mysql_num_rows(_handle->mysql_res) : size_t{};
+      }
+
       template <typename ResultRow>
       void next(ResultRow& result_row)
       {

tests/mysql/usage/Select.cpp

@@ -107,6 +107,10 @@ int Select(int, char*[])
     db(insert_into(tab).set(tab.gamma = true, tab.beta = "cheesecake"));
     testSelectAll(db, 3);
 
+    // Test size functionality
+    const auto test_size = db(select(all_of(tab)).from(tab).unconditionally());
+    assert(test_size.size() == 3ull);
+
     // test functions and operators
     db(select(all_of(tab)).from(tab).where(tab.alpha.is_null()));
     db(select(all_of(tab)).from(tab).where(tab.alpha.is_not_null()));