should be it

external/duckdb/extension/tpcds/dsdgen/dsdgen_helpers.cpp

@@ -0,0 +1,48 @@
+#include "dsdgen_helpers.hpp"
+
+#define DECLARER
+#include "address.h"
+#include "build_support.h"
+#include "config.h"
+#include "dist.h"
+#include "genrand.h"
+#include "params.h"
+#include "porting.h"
+#include "scaling.h"
+#include "tdefs.h"
+#include "init.h"
+
+namespace tpcds {
+
+void InitializeDSDgen(double scale) {
+	InitConstants::Reset();
+	ResetCountCount();
+	std::string t = std::to_string(scale);
+	set_str("SCALE", (char *)t.c_str()); // set SF, which also does a default init (e.g. random seed)
+	init_rand();                         // no random numbers without this
+}
+
+ds_key_t GetRowCount(int table_id) {
+	return get_rowcount(table_id);
+}
+
+void ResetCountCount() {
+	resetCountCount();
+}
+
+tpcds_table_def GetTDefByNumber(int table_id) {
+	auto tdef = getSimpleTdefsByNumber(table_id);
+	tpcds_table_def def;
+	def.name = tdef->name;
+	def.fl_child = tdef->flags & FL_CHILD ? 1 : 0;
+	def.fl_small = tdef->flags & FL_SMALL ? 1 : 0;
+	def.first_column = tdef->nFirstColumn;
+	return def;
+}
+
+tpcds_builder_func GetTDefFunctionByNumber(int table_id) {
+	auto table_funcs = getTdefFunctionsByNumber(table_id);
+	return table_funcs->builder;
+}
+
+} // namespace tpcds