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我不断收到 22P02 错误：（invalid input syntax for integer: "{1,2,3}"请参阅服务电话中的评论）。

这是我的服务电话：

...
using (var command = new NpgsqlCommand("mediabase.create_media", connection))
{
    command.CommandType = System.Data.CommandType.StoredProcedure;
    command.Parameters.Add("title", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.title;
    command.Parameters.Add("uniqueFilename", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.uniqueFilename;
    command.Parameters.Add("description", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.description;
    command.Parameters.Add("categoryIds", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.categoryIds; /* here the value is "1,2,3" */
    command.Parameters.Add("typeId", NpgsqlTypes.NpgsqlDbType.Integer).Value = media.typeId;
    command.Parameters.Add("ownerId", NpgsqlTypes.NpgsqlDbType.Integer).Value = media.ownerId;
    command.Parameters.Add("statusId", NpgsqlTypes.NpgsqlDbType.Integer).Value = media.statusId;
    command.Parameters.Add("gpsLocation", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.gpsLocation;
    command.Parameters.Add("locationNameId", NpgsqlTypes.NpgsqlDbType.Integer).Value = media.locationId;
    command.Parameters.Add("uploadUserId", NpgsqlTypes.NpgsqlDbType.Integer).Value = media.uploadUserId;
    command.Parameters.Add("uploadDate", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.uploadDate;
    command.Parameters.Add("uploadIp", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.uploadIp;
    command.Parameters.Add("metadataId", NpgsqlTypes.NpgsqlDbType.Integer).Value = metadataId;
    command.Parameters.Add("sysEnvironment", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.sysEnvironment;
    command.Parameters.Add("languageId", NpgsqlTypes.NpgsqlDbType.Integer).Value = media.languageId;
    command.Parameters.Add("publicationIds", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.publicationIds;
    command.Parameters.Add("limitations", NpgsqlTypes.NpgsqlDbType.Varchar).Value = media.limitations;

    mediaId = Convert.ToInt32(command.ExecuteScalar());
}

pgTransaction.Commit();
...

和存储过程：

CREATE OR REPLACE FUNCTION mediabase.create_media(
    title character varying, 
    uniquefilename character varying, 
    description character varying, 
    categoryids character varying, 
    typeid integer, 
    ownerid integer, 
    statusid integer, 
    gpslocation character varying, 
    locationnameid integer, 
    uploaduserid integer, 
    uploaddate character varying, 
    uploadip character varying, 
    metadataid integer, 
    sysenvironment character varying, 
    languageid integer, 
    publicationids character varying, 
    limitations character varying)
  RETURNS integer AS
$BODY$
    declare _mediaId integer;
    declare _point varchar;
    declare _gps_location geometry;
    declare _id text;

    begin

    IF (gpslocation <> '') THEN
      _point = 'POINT(' || gpslocation || ')';
      _gps_location = ST_Transform(ST_GeomFromText(_point, 4326), 900913);
    ELSE
      _gps_location = NULL;
    END IF;

    insert into mediabase.media (
        title, 
        unique_filename, 
        description, 
        owner_id, 
        status_id, 
        gps_location, 
        type_id, 
        location_name_id, 
        upload_user_id, 
        upload_date, 
        upload_ip, 
        metadata_id, 
        system_environment,
        language_id,
        limitations)

    values (
        title, 
        uniqueFilename, 
        description, 
        ownerId, 
        statusId, 
        _gps_location, 
        typeId, 
        locationNameId, 
        uploadUserId, 
        uploadDate, 
        uploadIp, 
        metadataId, 
        sysEnvironment,
        languageid,
        limitations)

    returning id into _mediaId; 

    -- insert category ids
    FOR _id IN SELECT string_to_array (categoryids,',')
    LOOP 
        INSERT into mediabase.media_categories (media_id, category_id)
        values (_mediaId, (_id::int));
    END LOOP;

    -- insert publication ids
    FOR _id IN SELECT string_to_array (publicationids,',')
    LOOP 
        INSERT into mediabase.media_publications (media_id, publication_id)
        values (_mediaId, (_id::int));
    END LOOP;

    return _mediaId;

    end;

$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;

在服务方法中可以看到，参数的输入categoryids是字符串"1,2,3"，NpgsqlDbType而是Varchar。在存储过程中，输入类型是character varying.

这是执行日志：

2013-01-17 08:56:42 CET ERROR:  invalid input syntax for integer: "{1,2,3}"
2013-01-17 08:56:42 CET CONTEXT:  SQL statement "INSERT into mediabase.media_categories (media_id, category_id)
            values (_mediaId, (_id::integer))"
    PL/pgSQL function "create_media" line 54 at SQL statement
2013-01-17 08:56:42 CET STATEMENT:  select * from mediabase.create_media(('Penguins')::varchar,('079117ec-676f-4022-9950-69e55c2a2600_Penguins.jpg')::varchar,('Description...')::varchar,('1,2,3')::varchar,(1)::int4,(1)::int4,(1)::int4,('')::varchar,(1)::int4,(1)::int4,('17/01/2013 08:56:42')::varchar,('::1')::varchar,(399)::int4,('dev')::varchar,(1)::int4,('1,2')::varchar,('Limitations...')::varchar)

为什么会弹出这个错误？

4

1 回答 1

3

我已经使用@dezso 和@CraigRinger 技巧解决了这个问题。我现在使用整数数组而不是逗号分隔的字符串。以下是更改：

在服务电话上：

...
/* media.categoryIds is of type int[] now */
command.Parameters.Add("categoryIds", NpgsqlTypes.NpgsqlDbType.Array | NpgsqlTypes.NpgsqlDbType.Integer).Value = media.categoryIds;
...

关于存储过程：

...
CREATE OR REPLACE FUNCTION mediabase.create_media(
    title character varying, 
    uniquefilename character varying, 
    description character varying, 
    categoryids integer[], -- changed type
    typeid integer, 
    ownerid integer, 
    statusid integer, 
    gpslocation character varying, 
    locationnameid integer, 
    uploaduserid integer, 
    uploaddate character varying, 
    uploadip character varying, 
    metadataid integer, 
    sysenvironment character varying, 
    languageid integer, 
    publicationids integer[], -- changed type
    limitations character varying)
...
...
    declare i integer;
...
...
    -- insert category ids
    FOR i IN SELECT generate_subscripts( categoryids, 1 )
    LOOP 
        INSERT into mediabase.media_categories (media_id, category_id)
        values (_mediaId, categoryids[i]);
    END LOOP;

    -- insert publication ids
    FOR i IN SELECT generate_subscripts( publicationids, 1 )
    LOOP 
        INSERT into mediabase.media_publications (media_id, publication_id)
        values (_mediaId, publicationids[i]);
    END LOOP;
...

再次感谢您对此的帮助。

于 2013-01-17T10:28:21.210 回答