doctrine / dbal

     *

     * @throws \InvalidArgumentException

     */

    public function getUniqueConstraintDeclarationSQL($name, Index $index)

    {

        $columns = $index->getQuotedColumns($this);

        $name = new Identifier($name);

        if (count($columns) === 0) {

            throw new \InvalidArgumentException("Incomplete definition. 'columns' required.");

        }

        return 'CONSTRAINT ' . $name->getQuotedName($this) . ' UNIQUE ('

             . $this->getIndexFieldDeclarationListSQL($columns)

             . ')' . $this->getPartialIndexSQL($index);

    }

    /**

     * Obtains DBMS specific SQL code portion needed to set an index

     *

     * @throws \InvalidArgumentException

     */

    public function getIndexDeclarationSQL($name, Index $index)

    {

        $columns = $index->getQuotedColumns($this);

        $name = new Identifier($name);

        if (count($columns) === 0) {

            throw new \InvalidArgumentException("Incomplete definition. 'columns' required.");

        }

        return $this->getCreateIndexSQLFlags($index) . 'INDEX ' . $name->getQuotedName($this) . ' ('

            . $this->getIndexFieldDeclarationListSQL($columns)

            . ')' . $this->getPartialIndexSQL($index);

    }

    /**

     * Obtains SQL code portion needed to create a custom column,