Merge pull request #7 from martok/select-alias

Add alias support for select in SQL builder
popphp · Oct 27, 2023 · 19904bf · 19904bf
2 parents aba3ebb + 17480bd
commit 19904bf
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diff --git a/src/Sql/Select.php b/src/Sql/Select.php
@@ -455,6 +455,13 @@ public function render(): string
         // Else, if there is a nested SELECT statement.
         } else if ($this->table instanceof \Pop\Db\Sql\Select) {
             $sql .= (string)$this->table;
+        // Else, if there is an aliased table
+        } else if (is_array($this->table)) {
+            if (count($this->table) !== 1)
+                throw new Exception('Error: Only one table can be used in FROM clause.');
+            $alias = array_key_first($this->table);
+            $table = $this->table[$alias];
+            $sql .= $this->quoteId($table) . ' AS ' . $this->quoteId($alias);
         // Else, just select from the table
         } else {
             $sql .= $this->quoteId($this->table);

diff --git a/tests/Sql/SelectTest.php b/tests/Sql/SelectTest.php
@@ -37,6 +37,13 @@ public function testAlias()
         $this->db->disconnect();
     }
 
+    public function testTableAlias()
+    {
+        $sql = $this->db->createSql();
+        $sql->select(['u.username'])->from(['u' => 'users']);
+        $this->assertEquals('SELECT `u`.`username` FROM `users` AS `u`', $sql->render());
+    }
+
     public function testJoin()
     {
         $sql = $this->db->createSql();