Question

I am using following zend code to select all data from a table where verified=1 and it is working for me.

$table = $this->getDbTable();
$select = $table->select();
$select->where('verified = 1');
$rows = $table->fetchAll($select);

No I want to select all data from that table where verified is not equal to ‘1’. I have tried the following ways but it is not fetching data.

$select->where('verified != 1');
$select->where('verified <> 1');
$select->where('verified != ?', 1);

Data structure for ‘verified’ column:

Field: verified
type: varchar(45)
Collation: utf8_bin         
NULL: Yes   
Default: NULL  

Any idea that how to use ‘not equal to’ operator in WHERE clause in Zend? Thanks

Answer 1

MySQL supports a custom operator <=> which returns true if the operands are equal or both null. It returns false if they are different, or if one operand is null.

$select->where('verified <=> 1');

This operator is non-standard. Standard SQL has syntax: IS NOT DISTINCT FROM that works just like MySQL’s <=>.