Question

这是我的代码：

$result = $link->query($query);
//Get query results 

$x = 0; 
$tableA = [];
$tableB = [];


while($tables = $result->fetch(PDO::FETCH_ASSOC))
{
    $test[] = $tables; 
    $assoc = $test[$x]; 

    $tableName = $assoc['TABLE_NAME']; 
    $columnName = $assoc['COLUMN_NAME']; 
    $refTableName = $assoc['REFERENCED_TABLE_NAME'];
    $refColumnName = $assoc['REFERENCED_COLUMN_NAME']; 

    $fkQueryA = "SELECT DISTINCT " . $columnName . " FROM " . $dbName . "." . $tableName . " ORDER BY ".$columnName." ;"; 
    $fkQueryB = "SELECT DISTINCT " . $refColumnName . " FROM " . $dbName . "." . $refTableName . " ORDER BY ".$refColumnName." ;"; 

    echo $fkQueryA."\n"; 
    echo $fkQueryB."\n"; 

    $resultA = $link->query($fkQueryA);
    $resultB = $link->query($fkQueryB);

    $tableA[] = $assoc['COLUMN_NAME'];
    while($var = $resultA->fetchColumn())
    {
        $tableA[] = $var;
    }

    $tableB[] = $assoc['REFERENCED_COLUMN_NAME'];
    while($vari = $resultB->fetchColumn())
    {
        $tableB[] = $vari; 
    }

    $x++; 
}

var_dump($tableA); 
//var_dump($tableB);

代码在运行时返回此结果：

SELECT DISTINCT salesRepEmployeeNumber FROM classicmodels.Customers ORDER BY     salesRepEmployeeNumber ;
SELECT DISTINCT employeeNumber FROM classicmodels.Employees ORDER BY     employeeNumber ;
SELECT DISTINCT officeCode FROM classicmodels.Employees ORDER BY officeCode ;
SELECT DISTINCT officeCode FROM classicmodels.Offices ORDER BY officeCode ;
SELECT DISTINCT orderNumber FROM classicmodels.OrderDetails ORDER BY orderNumber ;
SELECT DISTINCT orderNumber FROM classicmodels.Orders ORDER BY orderNumber ;
SELECT DISTINCT productCode FROM classicmodels.OrderDetails ORDER BY productCode ;
SELECT DISTINCT productCode FROM classicmodels.Products ORDER BY productCode ;
SELECT DISTINCT customerNumber FROM classicmodels.Payments ORDER BY customerNumber ;
SELECT DISTINCT customerNumber FROM classicmodels.Customers ORDER BY customerNumber ;
array(545) {
  [0]=>
  string(22) "salesRepEmployeeNumber"
  [1]=>
  string(10) "officeCode"
  [2]=>
  string(1) "1"
  [3]=>
  string(1) "2"
  [4]=>
  string(1) "3"
  [5]=>
  .....and so on.

fetchColumn()正在为我的查询结果的所有其他列返回正确的结果，而不是该列的信息。有关如何解决此问题的任何建议？

salesRepEmployeeNumber列中的数据：

mysql> SELECT DISTINCT salesRepEmployeeNumber FROM classicmodels.Customers;                                         +------------------------+
| salesRepEmployeeNumber |
+------------------------+
|                   NULL |
|                   1165 |
|                   1166 |
|                   1188 |
|                   1216 | 
|                   1286 |
|                   1323 |
|                   1337 |
|                   1370 |
|                   1401 |
|                   1501 |
|                   1504 |
|                   1611 |
|                   1612 |
|                   1621 |
|                   1702 |
+------------------------+

PHP PDO fetchColumn没有返回结果

0 个答案: