Thread: How to return an array of values from a function?

How to return an array of values from a function?

From

Siva Palanisamy

Date:

15 September 2011, 06:14:16

Hi All,

I wish to return an array of values. Assume, I have a table called contacts. I want to display all the names available from a column in the UI. Hence I need to return that column as an array of values. Please correct me if there is any other solution exist.

Here is the code, I’m trying to execute:

CREATE OR REPLACE FUNCTION get_all_names()

RETURNS TEXT[] AS '

DECLARE

group_data TEXT[];

BEGIN

SELECT display_name INTO group_data FROM contacts;

RETURN group_data;

END;

'LANGUAGE 'plpgsql';

During compilation, I got the below error:

ERROR: array value must start with "{" or dimension information

CONTEXT: PL/pgSQL function "get_all_ names " line 4 at SQL statement

Regards,

Siva.

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Re: How to return an array of values from a function?

From

Sim Zacks

Date:

15 September 2011, 07:35:02

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    On 09/15/2011 09:13 AM, Siva Palanisamy wrote:
    <blockquote
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        Hi All,
         
        I wish to return an array of values.
          Assume, I have a table called contacts. I want to display all
          the names available from a column in the UI. Hence I need to
          return that column as an array of values. Please correct me if
          there is any other solution exist.
         
        Here is the code, I’m trying to execute:
         
        CREATE OR REPLACE FUNCTION get_all_names()
        RETURNS TEXT[] AS '
        DECLARE
        group_data TEXT[];
        BEGIN


    Try
    <blockquote
cite="mid:90F0F47595235141A4380FCF01B0185B224141CCB4@CHN-HCLT-EVS07.HCLT.CORP.HCL.IN"
      type="cite">

        --SELECT display_name INTO group_data FROM
          contacts;


    select array(select display_name from contacts) into group_data;
    <blockquote
cite="mid:90F0F47595235141A4380FCF01B0185B224141CCB4@CHN-HCLT-EVS07.HCLT.CORP.HCL.IN"
      type="cite">

        RETURN group_data;
        END;
        'LANGUAGE 'plpgsql';
         
        During compilation, I got the below error:
         
        ERROR:  array value must start with "{" or
          dimension information
        CONTEXT:  PL/pgSQL function "get_all_ names
          " line 4 at SQL statement
         
        Regards,
        Siva.