evolution-cms / evolution

            }

        }

        foreach ($diff->removedColumns as $column) {

            if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) {

                continue;

            }

            $queryParts[] =  'DROP COLUMN ' . $column->getQuotedName($this);

        }

        foreach ($diff->changedColumns as $columnDiff) {

            if ($this->onSchemaAlterTableChangeColumn($columnDiff, $diff, $columnSql)) {

            $queryParts[] = 'ADD ' . $this->getColumnDeclarationSQL($column->getQuotedName($this), $columnArray);

        }

        foreach ($diff->removedColumns as $column) {

            if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) {

                continue;

            }

            $queryParts[] =  'DROP ' . $column->getQuotedName($this);

        }

        foreach ($diff->changedColumns as $columnDiff) {

            if ($this->onSchemaAlterTableChangeColumn($columnDiff, $diff, $columnSql)) {

            $queryParts[] = 'ADD ' . $this->getColumnDeclarationSQL($column->getQuotedName($this), $columnArray);

        }

        foreach ($diff->removedColumns as $column) {

            if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) {

                continue;

            }

            $queryParts[] =  'DROP ' . $column->getQuotedName($this);

        }

        foreach ($diff->changedColumns as $columnDiff) {

            if ($this->onSchemaAlterTableChangeColumn($columnDiff, $diff, $columnSql)) {

        }

        $fields = [];

        foreach ($diff->removedColumns as $column) {

            if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) {

                continue;

            }

            $fields[] = $column->getQuotedName($this);

        }

        if (count($fields)) {

            $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' DROP (' . implode(', ', $fields).')';