SQL> SELECT ename "Employee", CONNECT_BY_ISCYCLE "Cycle", 2 LEVEL, SYS_CONNECT_BY_PATH(ename, '/') "Path" In oracle you can generate a number series with connect by level. You can use hierarchical queries to travel along parent-child relationships in your data. Die Pseudospalte "LEVEL" enthält die Ebene eines Objektes innerhalb der Baumstruktur. The connect_by_iscycle pseudo-column will show you which rows contain the cycle:. LEVEL must be used with CONNECT BY Clause. SQL> ed Wrote file afiedt.buf 1 select empno, level, lpad(' ',(level-1)*2,' ')||ename as ename 2 from emp 3 connect by mgr = prior empno 4* start with mgr is null SQL> / EMPNO LEVEL ENAME ----- ----- ----- 7839 1 KING 7566 2 JONES 7788 3 SCOTT 7876 4 ADAMS 7902 3 FORD 7369 4 SMITH 7698 2 BLAKE 7499 3 ALLEN 7521 3 WARD 7654 3 MARTIN 7844 3 TURNER 7900 3 JAMES 7782 2 CLARK 7934 3 … Good day oliverbuchauer, 1. In addition, the START WITH clause can be used to define the root node(s) of the hierarchy. In its simplest form a hierarchical query needs a definition of how each child relates to its parent. Hierarchical Queries in Oracle (CONNECT BY) – Querychat ... We can display the level of our data by adding LEVEL in our select query.

create table mitarbeiter (pnr number(10), name varchar2(80), chef_pnr number(10)); Die Pseudospalte "LEVEL" kann verwendet werden, um die Hierarchieebene optisch durch Einrückung darzustellen: Right click on Server Explorer's root node and choose "Create New Connection" The following code uses the LEVEL pseudo column combined with the LPAD function, adding indentation to highlight the hierarchical query results. Module 2. The CONNECT BY condition is evaluated.. Any remaining WHERE clause predicates are evaluated.. Oracle then uses the information from these evaluations to form the hierarchy using the following steps: select level from dual connect by level <=10000000; Does anyone know how i can create the same functionality in MsSQL without the CTE limitation of ~32k values? If the minimum level is global, you need an additional step to strip all results not at the minimum level globally: with l as ( select foo. Microsoft SQL equivalent to Oracle "connect by level" is "hierarchy CTE". Re: Hierarchical Query with Rollup Sum (CONNECT BY with GROUP BY ROLLUP) Thiago Sep 6, 2011 4:26 PM ( in response to Solomon Yakobson ) Hi Frank, I have adjusted the code, since it is not our actual tables and i wanted to provide a simpler scenario i typed from scratch.

Choose to install "Product Components" Oracle Data Provider for .NET and Oracle Developer Tools for Visual Studio . In oracle you can generate a number series with connect by level. Über die "CONNECT BY"-Klausel werden dann die Zeilen verknüpft. select level from dual connect by level <=10000000; Does anyone know how i can create the same functionality in MsSQL without the CTE limitation of ~32k values?