sql错误代码：1241。操作数应包含1列

Question

我是SQL新手，遇到了问题。 我已经搜索并阅读了许多有关此错误的文章，但似乎无法将任何答案与我的问题联系起来。 据我所知，我没有做同样的事情，试图在SELECT返回2列。

INSERT INTO `countries` (
    `alpha2_id`, `alpha3_id`, `numeric_id`, `common_name`,
    `formal_name`, `capital`, `type_id`, `subtype_id`,
    `un_admission_date`, `eu_accession_date`, `anthem`, `motto`,
    `flag_name`, `seal_name`, `coa_name`
)
VALUES (
    'AF', 'AFG', '004', 'Afghanistan', 'Islamic State of Afghanistan', 'Kabul',
    (
        SELECT id_no FROM `country_types`
        WHERE `type_id`='T' AND `description`='Independent State'
    ),
    (
        SELECT id_no FROM `country_types`
        WHERE `type_id`='S' AND `description`=''
    ),
    '1946/11/19', null, 'Afghan National Anthem', '', 'af.png', '', 'af_coa.png'
);

此测试查询工作正常，但是当我尝试添加第二行时，出现SQL错误1241。

INSERT INTO `countries` (
    `alpha2_id`, `alpha3_id`, `numeric_id`, `common_name`,
    `formal_name`, `capital`, `type_id`, `subtype_id`,
    `un_admission_date`, `eu_accession_date`, `anthem`, `motto`,
    `flag_name`, `seal_name`, `coa_name`
)
VALUES (
    (
        'AF', 'AFG', '004', 'Afghanistan', 'Islamic State of Afghanistan', 'Kabul',
        (
            SELECT id_no FROM `country_types`
            WHERE `type_id`='T' AND `description`='Independent State'
        ),
        (
            SELECT id_no FROM `country_types`
            WHERE `type_id`='S' AND `description`=''
        ),
        '1946/11/19', null, 'Afghan National Anthem', '', 'af.png', '', 'af_coa.png'
    ),
    (
        'AL', 'ALB', '008', 'Albania', 'Republic of Albania', 'Tirana',
        (
            SELECT id_no FROM `country_types`
            WHERE `type_id`='T' AND `description`='Independent State'
        ),
        (
            SELECT id_no FROM `country_types`
            WHERE `type_id`='S' AND `description`=''
        ),
        '1955/12/14', null, 'Himni i Flamurit (United around the flag)', 'Ti, Shqipëri, më jep nder, më jep emrin Shqipëtar (You, Albania, give me honor, give me the name Albanian)', 'al.png', '', 'al_coa.png'
    )
);

谁能看到我哪里出问题了？

编辑：我有198个国家的csv文件，我必须将其插入到mysql表中。 我无法将数据作为csv插入，因为我需要将2个文本字段（ type_id和subtype_id ）转换为int字段。 由于我不熟悉SQL，因此我搜索了该网站并找到了要使用的语法。 单次导入效果很好，因此我再次搜索了该网站，以获取多次插入的语法。 这是我发现的格式：

INSERT INTO `countries` (col-names)
VALUES (
    (data fields to insert),
    (data fields to insert)
);

上面的示例是5行，可能不会以这种方式显示，我仍在学习如何设置帖子格式。 如果我可以使用2行值，那么可以添加其他196行。

我在这里放置了一个示例txt文件。 您的浏览器可能会自动换行，因此您可能需要查看源代码。

Answer 1

试试这个语法：

INSERT INTO countries
(
    alpha2_id,
    alpha3_id,
    numeric_id,
    common_name,
    formal_name,
    capital,
    type_id,
    subtype_id,
    un_admission_date,
    eu_accession_date,
    anthem,
    motto,
    flag_name,
    seal_name,
    coa_name
)
VALUES (
    (
        'AF',
        'AFG',
        '004',
        'Afghanistan',
        'Islamic State of Afghanistan',
        'Kabul',
        (
            SELECT id_no
            FROM   country_types
            WHERE  type_id='T'
            AND    description='Independent State'),
        (
            SELECT id_no
            FROM   country_types
            WHERE  type_id='S'
            AND    description=''),
        '1946/11/19',
        NULL,
        'Afghan National Anthem',
        '',
        'af.png',
        '',
        'af_coa.png'
    )
    ,
    (
        'AL', 'ALB', '008', 'Albania', 'Republic of Albania', 'Tirana',
        (
            SELECT id_no
            FROM   country_types
            WHERE  type_id='T'
            AND    description='Independent State'),
        (
            SELECT id_no
            FROM   country_types
            WHERE  type_id='S'
            AND    description=''),
        '1955/12/14',
        NULL,
        'Himni i Flamurit (United around the flag)',
        'Ti, Shqipëri, më jep nder, më jep emrin Shqipëtar (You, Albania, give me honor, give me the name Albanian)',
        'al.png',
        '',
        'al_coa.png'
    )
)
"; 

Answer 2

您的查询应如下所示

INSERT INTO countries
(
alpha2_id, alpha3_id, numeric_id, 
common_name,formal_name, capital, 
type_id, subtype_id, un_admission_date, 
eu_accession_date, anthem, motto, 
flag_name, seal_name, coa_name
 )

 Select 'AF', 'AFG', '004', 
'Afghanistan', 'Islamic State of Afghanistan', 'Kabul',
(SELECT id_no FROM `country_types` WHERE `type_id`='T' AND `description`='Independent State')as TypeId,
(SELECT id_no FROM `country_types` WHERE `type_id`='S' AND `description`='')as subtype_id,
'1946/11/19' as un_admission_date, null,
'Afghan National Anthem', '', 'af.png','', 'af_coa.png'
 /*  In Column  eu_accession_date You are Passing Null Please check whether  
 you column can contain null or not*/