feat(Cmake/Database): separate database lib from common (#5334)

* feat(Core/Database): separate databse lib from common

* 1

src/server/database/Database/AdhocStatement.cpp

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#include "AdhocStatement.h"
+#include "MySQLConnection.h"
+
+/*! Basic, ad-hoc queries. */
+BasicStatementTask::BasicStatementTask(const char* sql) :
+    m_has_result(false)
+{
+    m_sql = strdup(sql);
+}
+
+BasicStatementTask::BasicStatementTask(const char* sql, QueryResultFuture result) :
+    m_has_result(true),
+    m_result(result)
+{
+    m_sql = strdup(sql);
+}
+
+BasicStatementTask::~BasicStatementTask()
+{
+    free((void*)m_sql);
+}
+
+bool BasicStatementTask::Execute()
+{
+    if (m_has_result)
+    {
+        ResultSet* result = m_conn->Query(m_sql);
+        if (!result || !result->GetRowCount())
+        {
+            delete result;
+            m_result.set(QueryResult(nullptr));
+            return false;
+        }
+        result->NextRow();
+        m_result.set(QueryResult(result));
+        return true;
+    }
+
+    return m_conn->Execute(m_sql);
+}