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POOracle User defined aggregate function for varray of varchar
 

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    <p>I am trying to write some aggregate function for the varray and I get this error code when I'm trying to use it with data from the DB:</p> <pre><code>ORA-00600 internal error code, arguments: [kodpunp1], [], [], [], [], [], [], [], [], [], [], [] [koxsihread1], [0], [3989], [45778], [], [], [], [], [], [], [], [] </code></pre> <p>Code of the function is really simple (in fact it does nothing):</p> <pre><code>create or replace TYPE "TEST_VECTOR" as varray(10) of varchar(20) ALTER TYPE "TEST_VECTOR" MODIFY LIMIT 4000 CASCADE create or replace type Test as object( lastVector TEST_VECTOR, STATIC FUNCTION ODCIAggregateInitialize(sctx in out Test) return number, MEMBER FUNCTION ODCIAggregateIterate(self in out Test, value in TEST_VECTOR) return number, MEMBER FUNCTION ODCIAggregateMerge(self IN OUT Test, ctx2 IN Test) return number, MEMBER FUNCTION ODCIAggregateTerminate(self IN Test, returnValue OUT TEST_VECTOR, flags IN number) return number ); create or replace type body Test is STATIC FUNCTION ODCIAggregateInitialize(sctx in out Test) return number is begin sctx := Test(TEST_VECTOR()); return ODCIConst.Success; end; MEMBER FUNCTION ODCIAggregateIterate(self in out Test, value in TEST_VECTOR) return number is begin self.lastVector := value; return ODCIConst.Success; end; MEMBER FUNCTION ODCIAggregateMerge(self IN OUT Test, ctx2 IN Test) return number is begin return ODCIConst.Success; end; MEMBER FUNCTION ODCIAggregateTerminate(self IN Test, returnValue OUT TEST_VECTOR, flags IN number) return number is begin returnValue := self.lastVector; return ODCIConst.Success; end; end; create or replace FUNCTION test_fn (input TEST_VECTOR) RETURN TEST_VECTOR PARALLEL_ENABLE AGGREGATE USING Test; </code></pre> <p>Next I create some test data:</p> <pre><code>create table t1_test_table( t1_id number not null, t1_value TEST_VECTOR not null, Constraint PRIMARY_KEY_1 PRIMARY KEY (t1_id) ) </code></pre> <p>Next step is to put some data to the table</p> <pre><code>insert into t1_test_table (t1_id,t1_value) values (1,TEST_VECTOR('x','y','z')) </code></pre> <p>Now everything is prepared to perform queries:</p> <pre><code>Select test_fn(TEST_VECTOR('y','x')) from dual </code></pre> <p>Query above work well</p> <pre><code>Select test_fn(t1_value) from t1_test_table where t1_id = 1 </code></pre> <p>Version of Oracle DBMS I use: 11.2.0.3.0</p> <p>Has anyone tried do such a thing? Why do you think it's not working?</p>
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    1. USbaju
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    1. COORA-600 -> go to Oracle support and look for bug fixes. If you find none, file a support request.
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    2. COThere's no need to re-invent the wheel. In 11.2 you have [listagg](http://docs.oracle.com/cd/E14072_01/server.112/e10592/functions087.htm) and if you really want a user defined one copy and paste [Tom Kyte's stragg](http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:2196162600402).
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    3. CO@Ben In fact I do not want to get all results from group. I' m interested in only one specific result(in fact the newest one, sorted by one column) .It can be done thanks to the 'First' function for example: Select column_name_2 aggregate_function(column_name) KEEP (DENSE_RANK LAST ORDER BY x) FROM W group by column_name_2. It can be done also in other way but this I think is quite good.
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