.csv export with row complement based on a fixed number

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.csv export with row complement based on a fixed number

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#1 by (2 votes)

3

I have a MySQL table of products. I need to create a .csv export of them.

The products are on the bench as follows:

cod    produto    valor    pagina
123    caderno     1,00    1
456    lápis       1,00    1
789    borracha    1,00    1
1122   régua       1,00    2
1123   cola        1,00    2
1122   caneta      1,00    3

I need to set a fixed number of lines per page. When the limit is not reached, complete with empty spaces. Let's imagine that the limit is 5.

Expected:

cod    produto    valor    pagina
123    caderno     1,00    1
456    lápis       1,00    1
789    borracha    1,00    1
 -        -          -     -
 -        -          -     -
1122   régua       1,00    2
1122   cola        1,00    2
 -        -          -     -
 -        -          -     -
 -        -          -     -
 1122   caneta      1,00   3
 -        -          -     -
 -        -          -     -
 -        -          -     -
 -        -          -     -
 -        -          -     -

This can be done in MySQL or PHP, but does anyone have any idea how I could do it?

I have the following query:

$pagina = 0;
$quantidade = 24;
$inicio     =  ($quantidade * $pagina) - $quantidade;
$export = $conn->prepare("SELECT 
  f.prod_produto,f.prod_marca,
  f.prod_tipo1,f.prod_tipo2,
  SUBSTRING_INDEX(f.prod_preco,'.',1) AS prod_preco,
  SUBSTRING_INDEX(f.prod_preco,'.',-1) AS prod_centavos,
  REPLACE(f.prod_gramatura,',','.') AS prod_gramatura,  
  (CASE 
  WHEN f.prod_pais = 0 THEN 'BRA' ELSE   p.iso3
  END) AS pais,
  prod_pagina AS pagina
  FROM 
  produto AS f
  LEFT JOIN cep_paises AS p
  ON p.numcode = f.prod_pais
  WHERE
  prod_periodo = '16'
  ORDER BY prod_pagina ASC
  LIMIT  $inicio,$quantidade");
$export->execute(array());


while($dados = $export->fetch()){
   //exibe produtos
  echo $dados[0]."<br>";
}
if($export->rowCount() < $quantidade){
  $conta = $quantidade - $export->rowCount();
  while($conta <= $quantidade){
    echo $conta++;
        //preenche as linhas em branco
  }
}

This causes me the following error:

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE [42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '-24,24' at line 18 'in C: \ Users \ server \ htdocs \ systems \ modules \ products \ export.php: 92 Stack trace: # 0 C: \ Users \ server \ htdocs \ systems \ modules \ products \ export.php (92): PDOStatement-> Run (Array) # 1 {main} thrown in C: \ Users \ server \ htdocs \ systems \ modules \ products \ export.php on line 92

php mysql csv

asked by anonymous 18.12.2017 / 20:15

1 answer

Error executing class with parameter by main Performance ItextSharp

score 2 · Accepted Answer

$paginaAtual = "";
$limite = 5;
$conta = 0;
while($dados = $export->fetch()){
   //exibe produtos
  if($paginaAtual ==""){ //define a primeira pagina
      $paginaAtual = $dados["pagina"];
      $conta = 0;
  }elseif($paginaAtual != $dados['pagina']){//verifica se mudou de pagina
       while($conta < $limite){ // verifica se ficou algum item a menos
           echo "-        -          -     -"
            $conta++;
       }
       $paginaAtual = $dados["pagina"];
       $conta = 0;
  }
   $conta++
  echo $dados["produto"]."<br>";
}
while($conta < $limite){ // verifica pela ultima vez
       echo "-        -          -     -"
        $conta++;
   }