copy fix from chihiro-adachi for mysql 5.7

copy
fixed doctrine#5622 - mysql 5.7 ONLY_FULL_GROUP_BY doctrine#6143
chihiro-adachi  wants to merge 2 commits into doctrine:master from chihiro-adachi:patch-1

lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryOutputWalker.php

@@ -1,14 +1,20 @@
 <?php
-/**
- * Doctrine ORM
- *
- * LICENSE
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
  */
 
 namespace Doctrine\ORM\Tools\Pagination;
@@ -18,18 +24,9 @@
 use Doctrine\DBAL\Platforms\PostgreSqlPlatform;
 use Doctrine\DBAL\Platforms\SQLAnywherePlatform;
 use Doctrine\DBAL\Platforms\SQLServerPlatform;
-use Doctrine\ORM\Query\AST\ArithmeticExpression;
-use Doctrine\ORM\Query\AST\ArithmeticFactor;
-use Doctrine\ORM\Query\AST\ArithmeticTerm;
-use Doctrine\ORM\Query\AST\Literal;
 use Doctrine\ORM\Query\AST\OrderByClause;
-use Doctrine\ORM\Query\AST\OrderByItem;
 use Doctrine\ORM\Query\AST\PartialObjectExpression;
-use Doctrine\ORM\Query\AST\PathExpression;
 use Doctrine\ORM\Query\AST\SelectExpression;
-use Doctrine\ORM\Query\AST\SimpleArithmeticExpression;
-use Doctrine\ORM\Query\Expr\OrderBy;
-use Doctrine\ORM\Query\Expr\Select;
 use Doctrine\ORM\Query\SqlWalker;
 use Doctrine\ORM\Query\AST\SelectStatement;
 
@@ -376,14 +373,30 @@ private function preserveSqlOrdering(array $sqlIdentifier, $innerSql, $sql, $ord
         /* @var array $orderBy an array of rebuilt order by items */
         $orderBy = $this->rebuildOrderByClauseForOuterScope($orderByClause);
 
-        // Build the select distinct statement
+        $innerSqlIdentifier = $sqlIdentifier;
+
+        foreach ($orderBy as $field) {
+            $field = preg_replace('/((\S+)\s+(ASC|DESC)\s*,?)*/', '${2}', $field);
+
+            // skip fields that are selected by identifiers,
+            // if those are ordered by in the query
+            if (in_array($field, $sqlIdentifier, true)) {
+                continue;
+            }
+            $innerSqlIdentifier[] = $field;
+        }
+
+        // Build the innner select statement
         $sql = sprintf(
-            'SELECT DISTINCT %s FROM (%s) dctrn_result ORDER BY %s',
-            implode(', ', $sqlIdentifier),
+            'SELECT DISTINCT %s FROM (%s) dctrn_result_inner ORDER BY %s',
+            implode(', ', $innerSqlIdentifier),
             $innerSql,
             implode(', ', $orderBy)
         );
 
+        // now only select distinct identifier
+        $sql = sprintf('SELECT DISTINCT %s FROM (%s) dctrn_result', implode(', ', $sqlIdentifier), $sql);
+
         return $sql;
     }
 
@@ -440,7 +453,6 @@ private function rebuildOrderByClauseForOuterScope(OrderByClause $orderByClause)
                 $otherClassMetadata = $this->em->getClassMetadata($fieldMapping['declared']);
                 if (!$otherClassMetadata->isMappedSuperclass) {
                     $sqlTableAliasForFieldAlias = $this->getSQLTableAlias($otherClassMetadata->getTableName(), $dqlAliasForFieldAlias);
-
                 }
             }