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Functions/is_hi_in_date_pg_int8__date__date_.txt

+-- DROP FUNCTION schema_xyz.is_hi_in_date_pg(int8, date, date);
+
+CREATE OR REPLACE FUNCTION schema_xyz.is_hi_in_date_pg(my_uid bigint, my_first_date date, my_last_date date)
+ RETURNS bigint
+ LANGUAGE plpgsql
+AS $function$
+	
+
+DECLARE
+
+
+ergebnis bigint;
+
+
+BEGIN
+
+select count(*) into ergebnis
+from schema_xyz.relation where uid_1=my_uid and uid_0=0 
+and type in (0,1) 
+--and ((extract(year from first_date) <= my_first_year and extract(year from last_date) > my_first_year) 
+--or (extract(year from first_date) < my_last_year and extract(year from last_date) >=  my_last_year));
+and ((first_date >= my_first_date and first_date <= my_last_date) 
+or (last_date >= my_first_date and last_date <=  my_last_date)
+or (first_date <= my_first_date and last_date >=  my_last_date)
+);
+
+/*
+if my_first_year=my_last_year then 
+select count(*) into ergebnis 
+from relation where uid_1=my_uid and uid_0=0 
+and type in (0,1) 
+and ((extract(year from first_date) = my_first_year and extract(year from last_date) =  my_last_year));
+end if;
+*/
+if ergebnis >0 then ergebnis:=1;
+else ergebnis:=0;
+end if;
+
+RETURN ergebnis;
+end;
+
+$function$
+;