2011-03-03 35 views
0

伙计们我有这个查询,得到一个关键字,并在数据库中搜索一系列文章,根据关键字查询结果显示,然后我需要根据我得到的ID和显示它获取有关这些文章的信息。查询没有完成,有人可以帮我清理下一个代码并改进它吗?MySQL:PHP在查询的同时又用查询,如何提高?

谢谢

$cleanKeyword = str_replace("+", " ", $keyword); 
$i = mysql_query("SELECT IdNorma FROM $cpalabras WHERE Descripcion = '$cleanKeyword'"); 
    while($materia = mysql_fetch_array($i)){ 
     // storing idNorma into a variable 
     $IdNorma = $materia['IdNorma']; 
    $SQL = "SELECT n.*, j.Descripcion as jurisdiccion, 
      t.Descripcion as tipo, 
      date_format(n.FechaDesde,'%d') as dia, 
      date_format(n.FechaDesde,'%m') as mes, 
      date_format(n.FechaDesde,'%Y') as anio 
      FROM c_normas as n, c_jurisdiccion as j, c_tiponorma as t, c_materia as m 
      WHERE 1=1 "; 
    $SQL .= "AND n.IdNorma = '$IdNorma' "; 
    $SQL .= "ORDER BY Fechadesde DESC LIMIT 300"; 

    var_dump($SQL); 
    $a = mysql_query($SQL); 
     if(mysql_num_rows($a) > 0) { 
     while($row = mysql_fetch_array($a)){ ?> 
      <tr style="display:inline-block;width:100%;border-bottom:1px solid #E3E6EB;padding:4px 0;font-size: 10px;" class="listaEventoUnicoTr" id="quickSearchTr"> 
      <td width="120" align="left" id="searchable"><strong><?php echo fromDB($row['tipo']); ?></strong></td> 
      <td width="90" align="left"><a href="http://www.ips.com.ar/normmunipC/IPS_Municipal_files/files/<?php echo fromDB($row['Archivo']); ?>" target="_blank"><?php echo fromDB($row['Numero']); ?></a></td> 
      <td width="90" align="left" id="searchable"><?php echo fromDB($row['dia'])."-".fromDB($row['mes'])."-".fromDB($row['anio']); ?></td> 
      <td width="255" align="left" style="padding-top:4px;padding-bottom:4px;" id="searchable"><?php echo fromDB($row['Descripcion']); ?></td> 
      </tr> 
     <?php } //while 
     } else { //if ?> 
      <tr style="display:inline-block;width:100%;border-bottom:1px solid #E3E6EB;padding:4px 0;font-size: 10px;" class="listaEventoUnicoTr" id="quickSearchTr"> 
      <td width="500" align="center" colspan="4"> No hay resultados.</td> 
      </tr> 


     <?php } // else 

    }// /while ids 

谢谢你们!

+0

开始学习如何使用JOIN的SQL查询 – 2011-03-03 13:21:48

回答

2

这应该可以帮助您在正确的方向前进:

SELECT n.*, j.descripcion as jurisdiccion, t.Descripcion as tipo, date_format(n.FechaDesde,'%d') as dia, date_format(n.FechaDesde,'%m') as mes, date_format(n.FechaDesde,'%Y') as anio 

FROM c_normas as n 

LEFT JOIN $cpalabras on $cpalabras.IdNorma = n.IdNorma 

ORDER BY Fechadesde DESC LIMIT 300 
1

2个选择:

  1. 使用JOIN加入数据源。在这种情况下,您只需要1个查询,但我不太确定它会是什么样子,因为从c_normas as n, c_jurisdiccion as j, c_tiponorma as t, c_materia as m中选择看起来很奇怪/错误。
  2. 在第一个查询从$cpalabras获取数据后,建立“有效” $IdNorma值列表,然后做一个查询,以便从c_normas as n, c_jurisdiccion as j, c_tiponorma as t, c_materia as m选择所有必要的数据,像成才(..) where n.IdNorma in (1, 2, 3),而不是(..) where n.IdNorma = 1