即使mysql表中有值，SQL查询也不返回值

Question

I got this function:

private function _loadColumnRights() {

            $db = Zend_Registry::get('db');

            // Create the select query
            $select = $db->select()
                        ->from('account_columns', array(
                            'accountId'
                        ))
                        ->where('accountId = ?', $this->getId()); 

            // Fetch the data
            $row = $db->fetchRow($select);
            if($row != null) {
                $this->setColumns($row['columns']);
            }
            else {
                $this->setColumns('');
            }
        }

I search for the accountID = '128'

My table looks like this:

accountId | columns

and at row with accountId = '128' I got a value like this 'orderdate,ref-corlido,item-no,partid,item-description,quantity-value,unit-of-measurement,acquisition-value-order-line,sales-value-order-line,markup,due-date,status,direct-delivery,out-of-scope,non-compliant,memo,request-document,documents'

If I in PHP manually execute this SQL statement:

SELECT * FROM `account_columns` WHERE `accountId` = '128'

Then I get result..

my Code also goes in to this if:

if($row != null) {
            $this->setColumns($row['columns']);
        }

But the value of $row['columns'] is empty.. If I perform a var_dump on my view on this getter then i get empty values

If I change $row['columns']) to :

$this->setColumns($row['accountId']);

then I get the 128 value.. But I don't get the column values.. How come?

Answer 1

Because you only ask for one column in the result row. :)

You only as k for accountId...

    private function _loadColumnRights() {

        $db = Zend_Registry::get('db');

        // Create the select query
        $select = $db->select()

                    // THERE IS YOU ERROR :)
                    // THE SECOND PARAMETER IS AN ARRAY OF RESULT COLUMNS
                    ->from('account_columns', array(
                        //'accountId',  <-- Your error :)
                        '*' // use this if you want all columns back
                        //'columns' // or add this column name
                    ))


                    ->where('accountId = ?', $this->getId()); 

        // Fetch the data
        $row = $db->fetchRow($select);
        if($row != null) {
            $this->setColumns($row['columns']);
        }
        else {
            $this->setColumns('');
        }
    }

P.S.: You really should use another name for the "columns" colmn... :) Look at the list of reserved words and keywords... don't use them for column or table names. :)

https://dev.mysql.com/doc/refman/5.7/en/keywords.html

Have a great day!

Good luck!