doctrine / orm

            $owningAssoc = $targetClass->associationMappings[$assoc['mappedBy']];

            $sqlParts    = [];

            foreach ($owningAssoc['targetToSourceKeyColumns'] as $targetColumn => $sourceColumn) {

                $targetColumn = $this->quoteStrategy->getColumnName($class->fieldNames[$targetColumn], $class, $this->platform);

                $sqlParts[] = $sourceTableAlias . '.' . $targetColumn . ' = ' . $targetTableAlias . '.' . $sourceColumn;

            }

            foreach ($this->quoteStrategy->getIdentifierColumnNames($targetClass, $this->platform) as $targetColumnName) {

                if (isset($dqlParamKey)) {

            $joinColumns  = $assoc['isOwningSide'] ? $joinTable['inverseJoinColumns'] : $joinTable['joinColumns'];

            $joinSqlParts = [];

            foreach ($joinColumns as $joinColumn) {

                $targetColumn = $this->quoteStrategy->getColumnName($targetClass->fieldNames[$joinColumn['referencedColumnName']], $targetClass, $this->platform);

                $joinSqlParts[] = $joinTableAlias . '.' . $joinColumn['name'] . ' = ' . $targetTableAlias . '.' . $targetColumn;

            }

            $sql .= implode(' AND ', $joinSqlParts);

            $sql .= ' WHERE ';

            $joinColumns = $assoc['isOwningSide'] ? $joinTable['joinColumns'] : $joinTable['inverseJoinColumns'];

            $sqlParts    = [];

            foreach ($joinColumns as $joinColumn) {

                $targetColumn = $this->quoteStrategy->getColumnName($class->fieldNames[$joinColumn['referencedColumnName']], $class, $this->platform);

                $sqlParts[] = $joinTableAlias . '.' . $joinColumn['name'] . ' = ' . $sourceTableAlias . '.' . $targetColumn;

            }

            foreach ($this->quoteStrategy->getIdentifierColumnNames($targetClass, $this->platform) as $targetColumnName) {

                if (isset($dqlParamKey)) {