Fluent: exports limit & offset as %lmt and %ofs [Closes #82]

Also fixes 20f2093 on MSSQL

tests/dibi/Fluent.fetch.limit.mssql.phpt

@@ -0,0 +1,101 @@
+<?php
+
+use Tester\Assert;
+
+require __DIR__ . '/bootstrap.php';
+
+
+class MockDriver extends Dibi\Drivers\SqlsrvDriver
+{
+	function __construct()
+	{}
+
+	function connect(array & $config)
+	{}
+
+	function query($sql)
+	{
+		return $this;
+	}
+
+	function getResultColumns()
+	{
+		return [];
+	}
+
+	function fetch($assoc)
+	{
+		return FALSE;
+	}
+}
+
+$config['driver'] = new MockDriver;
+$conn = new Dibi\Connection($config);
+
+
+// fetch & limit
+$fluent = $conn->select('*')
+	->from('customers')
+	->limit(1)
+	->orderBy('customer_id');
+
+Assert::same(
+	reformat('SELECT TOP 1 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	(string) $fluent
+);
+
+
+$fluent->fetch();
+Assert::same(
+	'SELECT TOP 1 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T ',
+	dibi::$sql
+);
+$fluent->fetchSingle();
+Assert::same(
+	reformat('SELECT TOP 1 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	dibi::$sql
+);
+$fluent->fetchAll(0, 3);
+Assert::same(
+	reformat('SELECT TOP 3 * FROM (    SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	dibi::$sql
+);
+Assert::same(
+	reformat('SELECT TOP 1 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	(string) $fluent
+);
+
+
+$fluent->limit(0);
+$fluent->fetch();
+Assert::same(
+	reformat('SELECT TOP 0 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	dibi::$sql
+);
+$fluent->fetchSingle();
+Assert::same(
+	reformat('SELECT TOP 0 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	dibi::$sql
+);
+Assert::same(
+	reformat('SELECT TOP 0 * FROM (  SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	(string) $fluent
+);
+
+
+$fluent->removeClause('limit');
+$fluent->removeClause('offset');
+$fluent->fetch();
+Assert::same(
+	reformat('SELECT TOP 1 * FROM ( SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	dibi::$sql
+);
+$fluent->fetchSingle();
+Assert::same(
+	reformat('SELECT TOP 1 * FROM ( SELECT * FROM [customers] ORDER BY [customer_id]) AS T '),
+	dibi::$sql
+);
+Assert::same(
+	reformat('SELECT * FROM [customers] ORDER BY [customer_id]'),
+	(string) $fluent
+);