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No it is not. Look at the query in your code: $query = "SELECT krs.id_thn_ak ,krs.kode_matakuliah ,matakuliah.nama_matakuliah ,matakuliah.sks ,krs.nilai FROM krs INNER JOIN matakuliah ON (krs.kode_matakuliah = matakuliah.kode_matakuliah) WHERE krs.nim = $nim AND krs.id_thn_ak = $thn_ak"; Look at the query in the error message: SELECT krs.id_thn_ak ,krs.kode_matakuliah ,matakuliah.nama_matakuliah ,matakuliah.sks ,krs.nilai FROM krs WHERE krs.nim = 18024114 AND krs.id_thn_ak = INNER JOIN matakuliah ON (krs.kode_matakuliah = matakuliah.kode_matakuliah) They are not the same query. Now look at this part of the query that was shown in the error message: ...FROM krs WHERE krs.nim = 18024114 AND krs.id_thn_ak = INNER JOIN matakuliah... See why the query does not work? Now look at this part of your code: $this->input->post('$id_thn_ak', TRUE); Look carefully. Are you sure that is correct?

I think you hit a nerve there gizmola and you too maxxd. I feel it as soon as you say it that I'm stuck in terms of considering max and min scaling, viewport and having a fluid design (as maxxd calls it) that has no limitations in terms of scaling up or down. It's what you're talking about that I'm interested in, but which I can't express or describe. It has nothing to do with poor English or language limitations. This only has to do with too little knowledge. I live too much in the past and fail to see that it has evolved. This is like banging your head against the wall. I read, ask for advice, get answers and understand it then and there. I constantly see what I'm doing wrong, and what I should have done differently. Not mine; I see and understand how it should be, recognize and understand what will be done if I do/write like this. When I sit down again, I'm just as clueless. I have too much tunnel vision in many areas. I have to get out of that tunnel. It only leads in one track. I thank you for the answers you give and will read through what is linked to. You keep trying to push me in the right direction. I absorb all the knowledge you give me, but.... 🤔😠I get irritated and frustrated with myself. Thank you for the knowledge you spread and give me. (Barand, Gizmola, Maxxd, Kicken, Requinix, Benamen, Ginerjm and everybody else).