PostgreSQL的錯誤22P02無效輸入整數

我不斷收到22P02錯誤語法：invalid input syntax for integer: "{1,2,3}"（見服務電話註釋）。PostgreSQL的錯誤22P02無效輸入整數

這裏是我的服務電話：

... 
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(); 
...

，並且存儲過程：

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;

正如你可以在服務方法看，參數categoryids的輸入字符串"1,2,3"，和NpgsqlDbType是Varchar。在存儲過程中，輸入類型爲character varying。

下面是執行日誌：

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)

爲什麼這個錯誤坡平了？

來源

2013-01-16 Ambran

爲什麼不定義'characterids'爲'整數[]'？然後，您可以簡單地省略所有的強制轉換，並使用'generate_subscripts（）'作爲插入而不是循環。無論如何，'string_to_array（'{1,2,3}'，'，'）'產生'{「{1」，2，「3}」}'。 – dezso

@dezso我更多的是C＃開發人員，然後是SQL鯊魚。你可以添加一個示例代碼，它顯示了使用'generate-subscripts（）'和正確的字符串拆分。謝謝。 – Ambran

你是絕對肯定的是，'media.categoryIds'作爲新加入的一個參數是一個字符串'1,2,3'，而不是一個數組？ '{1,2,3}'是數組'[1,2,3]'的PostgreSQL表示，所以也許你正在傳遞一個數組並且nPgSQL正在爲你轉換它？否則，括號從哪裏來？ –

我使用@dezso和@CraigRinger技巧解決了這個問題。我現在使用一個整數數組而不是逗號分隔字符串。下面是變化：

上的服務電話：

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

在存儲過程：再次

... 
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; 
...

感謝這個幫助。

來源

2013-01-17 10:28:21 Ambran

PostgreSQL的錯誤22P02無效輸入整數

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