update README.md

RuoYi

2021-01-14 cca2f5c62ddb9539bceae1f5a92386389e24a5b3

 ruoyi-generator/src/main/resources/mapper/generator/GenTableColumnMapper.xml

@@ -117,4 +117,11 @@
        </foreach>

    </delete>

    

    <delete id="deleteGenTableColumns">

        delete from gen_table_column where column_id in 
        <foreach collection="list" item="item" open="(" separator="," close=")">

            #{item.columnId}

        </foreach>

    </delete>



</mapper>