diff --git a/Procedures/build_tree_for_sector_pg.txt b/Procedures/build_tree_for_sector_pg.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fb6c4e45352ebffd0ca6cfbb1f08e8d349c513c2
--- /dev/null
+++ b/Procedures/build_tree_for_sector_pg.txt
@@ -0,0 +1,42 @@
+-- DROP PROCEDURE christines_space.build_tree_for_sector_pg(int8);
+
+CREATE OR REPLACE PROCEDURE christines_space.build_tree_for_sector_pg(my_sector bigint)
+ LANGUAGE plpgsql
+AS $procedure$
+	BEGIN
+
+EXECUTE 'drop table if exists processing.zwischen_sector_tree';
+
+EXECUTE 'CREATE TABLE processing.zwischen_sector_tree as (
+select uid_ from (
+(select uid_ from basics.u_sector where domain_id='||my_sector||')) as d1
+union
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+(select uid_ from basics.u_sector where domain_id='||my_sector||'))
+union
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+(select uid_ from basics.u_sector where domain_id='||my_sector||')))
+union
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+(select uid_ from basics.u_sector where domain_id='||my_sector||'))))
+union
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+(select uid_ from basics.u_sector where domain_id='||my_sector||')))))
+union
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_1 from basics.relation where type in (0,1) and uid_0 in (
+select uid_ from basics.u_sector where domain_id='||my_sector||'))))))';
+
+END;
+	
+$procedure$
+;