How to Late bind with T-SQL and the Statement Object? - php

Question

I am looking for a long term solution to accommodate T-SQL queries that need to use late binding. Late binding syntax with MS-SQL is a pain and is unique.
When it comes to T-SQL late binding we need to DECLARE and SET, like
DECLARE #id int
SET #id = 1
SELECT * FROM users
WHERE user_id = #id;
Now Zend Framework 2 builds queries like
$select = new Sql\Select();
$select->from(['users']);
$select->columns(['*']);
$select->where->equalTo('user_id', '#id');
// Create the statement object
$stmt = $sql->prepareStatementForSqlObject();
$stmt->prepare();
$stmt->execute(['#id' => 1]);
Now in ZF2's Statement object's prepare() method I can prefix my DECLARE and SET to the already existing $sql, like so:
public function prepare($sql = null, array $options = [])
{
if ($this->isPrepared) {
throw new Exception\RuntimeException('Already prepared');
}
$sql = ($sql) ?: $this->sql;
$options = ($options) ?: $this->prepareOptions;
$pRef = &$this->parameterReferences;
// change substr_count($sql, '?') <-> TO |-> substr_count($sql, '#')
for ($position = 0, $count = substr_count($sql, '?'); $position < $count; $position++) {
if (!isset($this->prepareParams[$position])) {
$pRef[$position] = ['', SQLSRV_PARAM_IN, null, null];
} else {
$pRef[$position] = &$this->prepareParams[$position];
}
}
// <!-- Beg of custom stuff. I can grab the $sql string, that we built up here, with $this->sql, and prefix it with the T-SQL required DECLARE and SET. -->
// We can get #id and 1 through the execute()'s call and the parameter Container.
$prependSQL = "DECLARE #id int";
$prependSQL .= "SET #id = 1";
$prependSQL .= $this->sql;
$this->sql = $prependSQL;
$sql = $this->sql;
// <!-- End of custom stuff -->
$this->resource = sqlsrv_prepare($this->sqlsrv, $sql, $pRef, $options);
$this->isPrepared = true;
return $this;
}
Is this how I should be doing this? I feel like I am undermining ZF2's DB abstraction layer. Any direction or input would be great on how I am suppose to do this.