doctrine / dbal

     *

     * @return string

     */

    public function getCommentOnColumnSQL($tableName, $columnName, $comment)

    {

        $tableName = new Identifier($tableName);

        $columnName = new Identifier($columnName);

        $comment = $this->quoteStringLiteral($comment);

        return "COMMENT ON COLUMN " . $tableName->getQuotedName($this) . "." . $columnName->getQuotedName($this) .

            " IS " . $comment;

    }

    /**

     * Returns the SQL to create inline comment on a column.

    /**

     * {@inheritdoc}

     */

    public function getCommentOnColumnSQL($tableName, $columnName, $comment)

    {

        $tableName = new Identifier($tableName);

        $columnName = new Identifier($columnName);

        $comment = $comment === null ? 'NULL' : $this->quoteStringLiteral($comment);

        return "COMMENT ON COLUMN " . $tableName->getQuotedName($this) . '.' . $columnName->getQuotedName($this) .

            " IS $comment";

    }

    /**

     * {@inheritdoc}

    /**

     * {@inheritdoc}

     */

    public function getCommentOnColumnSQL($tableName, $columnName, $comment)

    {

        $tableName = new Identifier($tableName);

        $columnName = new Identifier($columnName);

        $comment = $comment === null ? 'NULL' : $this->quoteStringLiteral($comment);

        return "COMMENT ON COLUMN " . $tableName->getQuotedName($this) . "." . $columnName->getQuotedName($this) .

            " IS $comment";

    }

    /**

     * {@inheritDoc}