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POUse Recursive CTE in DB2 stored proc
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2010-07-20T01:00:31.133
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I have a need to run a recursive CTE within a stored proc, but I can't get it past this: SQL0104N An unexpected token "with" was found following "SET count=count+1; ". Expected tokens may include: "". LINE NUMBER=26. My google-fu showed a couple of similar topics, but none with resolution. The query functions as expected outside of the stored proc, so I'm hoping that there's some syntactic sugar I'm missing that'll let this work. Similarly, the proc compiles and works without the query. Here's a contrived example: <pre><code>--setup create table tree (id integer, name varchar(50), parent_id integer); insert into tree values (1, 'Alice', null); insert into tree values (2, 'Bob', 1); insert into tree values (3, 'Charlie', 2); </code></pre> - <pre><code>- the proc create or replace procedure testme() RESULT SETS 1 LANGUAGE SQL BEGIN DECLARE SQLSTATE CHAR(5); DECLARE SQLCODE integer default 0; DECLARE count INTEGER; DECLARE sum INTEGER; DECLARE total INTEGER; DECLARE id INTEGER; DECLARE curs CURSOR WITH RETURN FOR select count,sum from sysibm.sysdummy1; DECLARE hiercurs CURSOR FOR select id from tree order by id; SET bomQuery=''; PREPARE stmt FROM bomQuery; SET count = 0; SET sum = 0; set total = 0; OPEN hiercurs; FETCH hiercurs INTO id; WHILE (SQLCODE <> 100) DO SET count=count+1; with org (level,id,name,parent_id) as (select 1 as level,root.id,root.name,root.parent_id from tree root where root.id=id union all select level+1,employee.id,employee.name,employee.parent_ id from org boss, tree employee where level < 5 and employee.parent_id=boss.id) select count(1) into sum from org; SET total=total+sum; FETCH hiercurs INTO id; END WHILE; CLOSE hiercurs; OPEN curs; END </code></pre>
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<stored-procedures><db2><recursion><common-table-expression>
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Use Recursive CTE in DB2 stored proc
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