mybatic 判断 mysql 表字段是否存在

<select id="checkColumnsExistsTable"
            resultType="java.lang.Integer">
       select count(1) from information_schema.columns where table_name=#{tableName} and column_name=#{field}

    </select>
    ```

public interface RsCgformHeadMapper extends BaseMapper {
…
Integer checkColumnsExistsTable(@Param(“tableName”) String tableName, @Param(“field”) String field);
}