Feature: Add support for inserting multiple rows using a subquery

src/Framework/QueryBuilder/Concerns/CRUD.php

@@ -3,6 +3,7 @@
 namespace Give\Framework\QueryBuilder\Concerns;
 
 use Give\Framework\Database\DB;
+use Give\Framework\QueryBuilder\QueryBuilder;
 
 /**
  * @since 2.19.0
@@ -29,6 +30,26 @@ public function insert($data, $format = null)
         );
     }
 
+    /**
+     * @unreleased
+     *
+     * @param string $table
+     * @param array  $columns
+     *
+     * @return false|int
+     */
+    public function insertInto(string $table, array $columns)
+    {
+        return DB::query(
+            sprintf(
+                'INSERT INTO %s (%s) %s',
+                $this->prefixTable($table),
+                implode(', ', $columns),
+                $this->getSQL()
+            )
+        );
+    }
+
     /**
      * @see https://developer.wordpress.org/reference/classes/wpdb/update/
      *

tests/Unit/Framework/QueryBuilder/CRUDTest.php

@@ -57,6 +57,27 @@ public function testInsertShouldAddRowToDatabase()
         $this->assertEquals($data['post_content'], $post->post_content);
     }
 
+    /**
+     * @unreleased
+     */
+    public function testInsertIntoShouldAddSubQueryAsMultipleRowsToTheDatabase()
+    {
+        DB::table('posts')->insert(['post_title' => 'Aye Post']);
+        $postIdAye = DB::last_insert_id();
+
+        DB::table('posts')->insert(['post_title' => 'Bee Post']);
+        $postIdBee = DB::last_insert_id();
+
+        DB::table('posts')
+            ->select(['ID', 'post_id'])
+            ->selectRaw('(SELECT "postTitle") as meta_key')
+            ->select(['post_title', 'meta_value'])
+            ->insertInto('postmeta', ['post_id', 'meta_key', 'meta_value']);
+
+        $this->assertEquals('Aye Post', get_post_meta($postIdAye, 'postTitle', true));
+        $this->assertEquals('Bee Post', get_post_meta($postIdBee, 'postTitle', true));
+    }
+
     /**
      * @since 2.19.0
      *