I do the following INSERT INTO ‘tablename’ SELECT ‘data1’ AS ‘column1’, ‘data2’ AS ‘column2’

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Asked: May 31, 20262026-05-31T05:50:12+00:00 2026-05-31T05:50:12+00:00

I do the following INSERT INTO ‘tablename’ SELECT ‘data1’ AS ‘column1’, ‘data2’ AS ‘column2’

0

I do the following

INSERT INTO 'tablename'
  SELECT 'data1' AS 'column1', 'data2' AS 'column2'
UNION SELECT 'data3', 'data4'
UNION SELECT 'data5', 'data6'   
UNION SELECT 'data7', 'data8'

From on LINK!

Query actually executes with no problem, but no data is inserted… I do the simple test at the end…

This is the insertion LOG:

05-18 10:53:49.531: DEBUG/dalvikvm(27793): GC_CONCURRENT freed 1001K, 52% free 3602K/7367K, external 2526K/3051K, paused 1ms+2ms
05-18 10:53:49.785: DEBUG/dalvikvm(27793): GC_CONCURRENT freed 1117K, 51% free 3610K/7367K, external 2526K/3051K, paused 8ms+2ms
05-18 10:53:49.835: DEBUG/dalvikvm(27793): GC_CONCURRENT freed 1083K, 52% free 3599K/7367K, external 2526K/3051K, paused 2ms+2ms
05-18 10:53:49.890: DEBUG/dalvikvm(27793): GC_CONCURRENT freed 1043K, 51% free 3634K/7367K, external 2526K/3051K, paused 2ms+2ms
05-18 10:53:49.917: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 1079K, 52% free 3578K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:49.964: DEBUG/dalvikvm(27793): GC_CONCURRENT freed 987K, 51% free 3657K/7367K, external 2526K/3051K, paused 2ms+1ms
05-18 10:53:49.988: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 955K, 52% free 3606K/7367K, external 2526K/3051K, paused 17ms
05-18 10:53:50.011: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 1037K, 52% free 3584K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.035: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 953K, 51% free 3627K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.058: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 925K, 51% free 3631K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.089: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 945K, 52% free 3589K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.113: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 883K, 51% free 3638K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.132: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 857K, 51% free 3625K/7367K, external 2526K/3051K, paused 17ms
05-18 10:53:50.156: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 924K, 52% free 3593K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.183: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 925K, 52% free 3594K/7367K, external 2526K/3051K, paused 19ms
05-18 10:53:50.203: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 959K, 52% free 3596K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.226: DEBUG/dalvikvm(27793): GC_FOR_MALLOC freed 859K, 52% free 3597K/7367K, external 2526K/3051K, paused 18ms
05-18 10:53:50.226: DEBUG/TV Spored++(27793): INSERT INTO current SELECT '1' AS _id_current, '4645416' AS id_current, '3SAT' AS channel_name, '3SAT' AS channel, '2' AS id_channel, '27' AS id_language, 'Lanz kuha' AS title, '2011-05-18 10:15:00' AS start, '75' AS length, '11' AS catergory, '65' AS genre, '0' AS sortOrder UNION SELECT '2', '4628869', 'A Kanal', 'AKANAL', '3', '2', 'Pa me ustreli!', '2011-05-18 10:40:00', '30', '5', '94', '1' UNION SELECT '3', '4648393', 'ABMoteurs', 'ABMOTEURS', '4', '12', 'Fenomen Ferrari', '2011-05-18 10:30:00', '30', '8', '7', '2' UNION SELECT '4', '4644514', 'ARD', 'ARD', '8', '27', 'Za božjo voljo', '2011-05-18 10:25:00', '50', '5', '9', '3' UNION SELECT '5', '4647462', 'ARTE', 'ARTE', '9', '27', 'Junaki znanosti', '2011-05-18 10:10:00', '50', '8', '7', '4' UNION SELECT '6', '4624746', 'AXN Adria', 'AXN', '164', '2', 'Starsky in Hutch', '2011-05-18 10:40:00', '60', '5', '71', '5' UNION SELECT '7', '4632973', 'Animal Planet', 'ANIMAL', '6', '2', 'Živalsko okrožje', '2011-05-18 10:00:00', '55', '8', '103', '6' UNION SELECT '8', '4646744', 'BBC Entertainment', 'BBCPRIME', '10', '2', 'Michael Palin v Novi Evropi', '2011-05-18 10:25:00', '50', '8', '103', '7' UNION SELECT '9', '4645887', 'BBC World', 'BBCWORLD', '11', '2', 'Težke besede', '2011-05-18 10:30:00', '30', '7', '39', '8' UNION SELECT '10', '4640146', 'Baby First', 'BABYFIRST', '134', '2', 'Različno', '2011-05-18 10:30:00', '60', '6', '0', '9' UNION SELECT '11', '4638896', 'Boomerang', 'BOOMERANG', '12', '2', 'Jetsonovi', '2011-05-18 10:35:00', '25', '6', '46', '10' UNION SELECT '12', '4634922', 'C Music TV', 'CMUSICTV', '124', '2', 'Videomix', '2011-05-18 10:00:00', '240', '11', '15', '11' UNION SELECT '13', '4573091', 'CCTV Kitajski', 'CCTVCHINA', '149', '2', 'Potovanja', '2011-05-18 10:30:00', '30', '8', '103', '12' UNION SELECT '14', '4659684', 'CNBC Europe', 'CNBCEUR', '150', '2', 'Mednarodno trgovanje', '2011-05-18 10:00:00', '120', '7', '20', '13' UNION SELECT '15', '4640257', 'CNN International', 'CNN', '16', '2', 'Poslovni svet danes', '2011-05-18 10:00:00', '60', '7', '20', '14' UNION SELECT '16', '4638021', 'Cartoon Network - TCM', 'CARTOON', '14', '2', 'Robotek', '2011-05-18 10:30:00', '30', '6', '46', '15' UNION SELECT '17', '4646081', 'Channel One Russia', 'RUSSIA1', '165', '34', 'Zdravo živeti!', '2011-05-18 09:50:00', '70', '9', '103', '16' UNION SELECT '18', '4644397', 'Cinemax', 'CINEMAX1', '111', '2', 'Mamma Mia!', '2011-05-18 09:40:00', '110', '1', '97', '17' UNION SELECT '19', '4643819', 'Cinemax 2', 'CINEMAX2', '113', '2', 'Kalifornijska delitev', '2011-05-18 10:00:00', '105', '1', '24', '18' UNION SELECT '20', '4615025', 'Croatian Music Channel', 'CMC', '17', '14', 'Nova plošča', '2011-05-18 10:00:00', '60', '11', '15', '19' UNION SELECT '21', '4604102', 'DM Sat', 'DMSAT', '151', '38', 'Glasbeni program in pogovor preko SMS-ov', '2011-05-18 07:05:00', '235', '11', '15', '20' UNION SELECT '22', '4645977', 'Da Vinci Learning', 'DAVINCILEAR', '121', '2', 'Nekoč so bili izumitelji: Einstein', '2011-05-18 10:30:00', '30', '6', '22', '21' UNION SELECT '23', '4649979', 'Daring! TV', 'XXXXTREME', '159', '2', 'Fantom vstop prepovedan', '2011-05-18 08:53:00', '127', '14', '91', '22' UNION SELECT '24', '4626679', 'Discovery Channel Europe', 'DISCOVERY', '19', '2', 'Neverjetno preživetje', '2011-05-18 10:00:00', '55', '8', '103', '23' UNION SELECT '25', '4613894', 'Discovery HD', 'DISCOVERYHD', '131', '3', 'GT dirkalnik: Magny Cours', '2011-05-18 10:35:00', '50', '8', '52', '24' UNION SELECT '26', '4633183', 'Discovery Investigation', 'DISCINV', '120', '2', 'Dosjeji FBI', '2011-05-18 10:10:00', '50', '8', '103', '25' UNION SELECT '27', '4610298', 'Discovery Science', 'DISCSCI', '21', '2', 'LDRS - Največji nevarni raketoplani', '2011-05-18 10:50:00', '50', '8', '103', '26'

What could be wrong here?

Thanks for your answers!

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1 Answer

Editorial Team · Answer 1 · 2026-05-31T05:50:13+00:00

In your LOG GC_FOR_MALLOC indicates that your Garbage collector has to execute frequently probably due to the large size of your query. If you have to concatenate a string many times avoid using ‘+’ operator as it creates a new String for every concatenation. So garbage collector has to work a lot to collect these garbage strings instead you can use stringBuilder. String builder appends the new string into previous and do not creates new string every time.

    StringBuilder s0 = "INSERT INTO ".append( DATABASE_TABLE_CURRENT )
    .append(  " (" ).append(  KEY_ID_CURRENT ).append( ", ").append(  KEY_CURRENT_CHANNEL_NAME )
    .append(  ", " ).append(  KEY_CURRENT_CHANNEL )
    .append(  ", " ).append(  KEY_CURRENT_ID_CHANNEL ).append(  ", " ).append(  KEY_CURRENT_ID_LANG )
    .append(  ", " ).append(  KEY_CURRENT_TITLE ).append(  ", " ).append(  KEY_CURRENT_START )
    .append(  ", " ).append( KEY_CURRENT_LENGTH ).append(  ", " ).append(  KEY_CURRENT_CATEGORY )
    .append(  ", " ).append(  KEY_CURRENT_GENRE ).append(  ", " ).append(  KEY_CURRENT_ORDER ).append(  ") ")
    .append( "SELECT '4628870', 'A Kanal', 'AKANAL', '3', '2', 'Obalna straža', " ).append( 
            "'2011-05-18 11:10:00', '55', '5', '9', '1'; "); 
    Log.d("TV Spored++", s0.toString());
    db.rawQuery(s0.toString(), null);

As for as the syntax of query is considered, the query is perfectly structured.

    INSERT INTO 'tablename' ('column1', 'column2')
    SELECT 'data3', 'data4'
    UNION SELECT 'data5', 'data6'   
    UNION SELECT 'data7', 'data8'

I will suggest you using execSQL instead of rawQuery(string,null). As execSQL is used to queries which do not mean to return anything.

    db.execSQL(s0.toString());

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