rename compile to build and added sql_hash to query_context

include/matador/query/query_builder.hpp

@@ -29,9 +29,9 @@ struct value_visitor;
 
 class query_builder final : public query_part_visitor {
 public:
-  sql::query_context compile(const query_data &data,
-                             const sql::dialect &d,
-                             std::optional<std::reference_wrapper<const sql::connection_impl>> conn);
+  sql::query_context build(const query_data &data,
+                           const sql::dialect &d,
+                           std::optional<std::reference_wrapper<const sql::connection_impl>> conn);
 
 protected:
   void visit(internal::query_alter_part& part) override;

include/matador/sql/query_context.hpp

@@ -37,6 +37,7 @@ enum class return_mode {
 
 struct query_context {
   std::string sql;
+  size_t sql_hash{};
   sql_command command{};
   std::string command_name{};
   std::string schema_name{};