[jira] [Resolved] (MADLIB-1215) PCA error with text grouping column

["Rahul Iyer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MADLIB-1215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rahul Iyer resolved MADLIB-1215.
--------------------------------
    Resolution: Fixed

PR: https://github.com/apache/madlib/pull/242

> PCA error with text grouping column
> -----------------------------------
>
>                 Key: MADLIB-1215
>                 URL: https://issues.apache.org/jira/browse/MADLIB-1215
>             Project: Apache MADlib
>          Issue Type: Bug
>            Reporter: Rashmi Raghu
>            Assignee: Rahul Iyer
>            Priority: Minor
>             Fix For: v1.14
>
>
> {{The issue is that PCA train does not run when the grouping column is text (have not tested other non-integer data types). See below for error reproduced on a modified example from the docs.}}
> DROP TABLE IF EXISTS mat_group_text;
> CREATE TABLE mat_group_text (
>  id integer,
>  row_vec double precision[],
>  matrix_id_text text
> );
> INSERT INTO mat_group_text VALUES
> (1, '\{1,2,3}', '1'),
> (2, '\{2,1,2}', '1'),
> (3, '\{3,2,1}', '1'),
> (4, '\{1,2,3,4,5}', '2'),
> (5, '\{2,5,2,4,1}', '2'),
> (6, '\{5,4,3,2,1}', '2');
> DROP TABLE IF EXISTS result_table_group_text, result_table_group_text_mean;
> SELECT madlib.pca_train('mat_group_text', -- Source table
>  'result_table_group_text', -- Output table
>  'id', -- Row id of source table
>  0.8, -- Proportion of variance
>  'matrix_id_text'); -- Grouping column
> SELECT * FROM result_table_group_text ORDER BY matrix_id_text, row_id_text;
> -- NOTICE: table "result_table_group_text" does not exist, skipping
> -- NOTICE: table "result_table_group_text_mean" does not exist, skipping
> -- ERROR: plpy.SPIError: plpy.SPIError: operator does not exist: text = integer
> -- LINE 5: WHERE matrix_id_text=1
> -- ^
> -- HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
> -- QUERY: 
> -- CREATE TABLE pg_temp.__madlib_temp_57228654_1520981521_47712361__group_0 AS
> -- SELECT ROW_NUMBER() OVER() AS row_id, row_vec
> -- FROM mat_group_text
> -- WHERE matrix_id_text=1
> -- 
> -- CONTEXT: Traceback (most recent call last):
> -- PL/Python function "pca_train", line 23, in <module>
> -- return pca.pca(**globals())
> -- PL/Python function "pca_train", line 87, in pca
> -- PL/Python function "pca_train", line 235, in pca_wrap
> -- PL/Python function "pca_train"
> -- ********** Error **********
> -- 
> -- ERROR: plpy.SPIError: plpy.SPIError: operator does not exist: text = integer
> -- SQL state: 42883
> -- Hint: No operator matches the given name and argument type(s). You might need to add explicit type casts.
> -- Context: Traceback (most recent call last):
> -- PL/Python function "pca_train", line 23, in <module>
> -- return pca.pca(**globals())
> -- PL/Python function "pca_train", line 87, in pca
> -- PL/Python function "pca_train", line 235, in pca_wrap
> -- PL/Python function "pca_train"



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