Mysql SQL获取一列以匹配多个条件

提供了以下SQL代码片段：

CASE
    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
    ELSE '< 10'
END

编辑1

使用@Barmar的建议，我的查询现在看起来是这样的，导致了一个错误：1248-每个派生表都必须有自己的别名，因此我显然实现了错误的别名，因此任何进一步的帮助都将不胜感激

    SELECT
        COUNT(*) AS `RecordCount`, `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`,
        (CASE
            WHEN (`EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN '2018-12-31'
            WHEN (`EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            ELSE `EndDateTCDR`
        END) AS `EndDate`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            ELSE `StartDateTCDR`
        END) AS `StartDate`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN (
                CASE
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
                    ELSE '< 10'
                END
            )
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` > '1001-01-01') THEN (
                CASE
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
                    ELSE '< 10'
                END
            )
        END) AS `TCDRLength`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN (
                ROUND((DATEDIFF('2018-12-31', `StartDateTCDR`) / 365), 2)
            )
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` > '1001-01-01') THEN (
                ROUND((DATEDIFF(`EndDateTCDR`, `StartDateTCDR`) / 365), 2)
            )
        END) AS `ActualLength`
    FROM `data_records`
    LEFT JOIN `RespOrgLUT` ON `ResponsibleOrgIn` = `ResponsibleOrg`
    LEFT JOIN (
        SELECT `category`, COUNT(*)
        FROM `data_records` dr
        JOIN (
            SELECT '< 10' AS `category`
            UNION
            SELECT '>= 10'
            UNION
            SELECT '>= 20'
            UNION
            SELECT '>= 30'
        ) AS c
            ON (`category` = '>= 30' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) >= 30))
            OR (`category` = '>= 20' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) >= 20))
            OR (`category` = '>= 10' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) >= 10))
            OR (`category` = '< 10' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) < 10))
    )
    GROUP BY `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`, `StartDate`, `EndDate`, `ActualLength`, `TCDRLength`
    ORDER BY `ResponsibleOrg` ASC, `RecordCount` DESC, `ResponsibleOrgOut` ASC, `ActualLength` DESC, `TCDRLength` DESC
    LIMIT 0, 2000

---

使用返回所有类别的子查询连接表，然后检查行是否符合类别。这里有一个简化，只显示了查询的这一部分，我现在没有时间填写整个查询

SELECT category, COUNT(*)
FROM ...
JOIN (
    SELECT '< 10' AS category
    UNION
    SELECT '>= 10'
    UNION
    SELECT '>= 20'
    UNION
    SELECT '>= 30'
) AS c ON (category = '>= 30' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30))
        OR (category = '>= 20' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20))
        OR (category = '>= 10' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10))
        OR (category = '< 10' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) < 10))
GROUP BY Category, `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`, `StartDate`, `EndDate`, `ActualLength`, `TCDRLength`

---

另一种方法是4个查询的联合，每个查询在其WHERE子句中测试年龄。

在这种情况下，解决方案不需要使用在SQL端完成处理的单个查询。我选择了一个更广泛的查询，一次获取所有数据，然后用PHP处理结果集以获得我需要的结果。

如果一行包含多个类别，您想在结果中为它创建多行，每个行具有不同的类别？或者您想在同一行中列出所有类别，如>=30，>=20，>=10？假设我有4行。一个年龄为31岁，一个年龄为24岁，一个年龄为11岁，一个年龄为7岁，我希望计数>=30有一个条目，计数>=20有两个条目，计数>=10有三个条目，如果计数小于10，则有1个条目-在这种情况下，4行结果应为7行结果-如您的初始注释所示。您可以通过在最后一个左联接中的子查询后添加别名来修复此错误。谢谢-我正在尝试您的答案。我得到1248-每个派生表都必须有自己的别名错误，即使在连接上添加了别名。如果你能在有机会的时候进行完整的查询，我将不胜感激——不要太匆忙，非常感谢！现在编辑我的问题，以包含出现错误的尝试。接下来我将尝试4个联合。我没有得到你发布的正确答案。再次感谢您的尝试。工会可能是更简单的方式，我希望在加入之前考虑一下。谢谢，@Barmar。我正在与工会合作。看起来它会起作用，我会接受你正确的回答，因为它确实提到了工会。也许只是编辑一下，让工会成为焦点？再次感谢你！你应该发布你的工会解决方案作为答案，并接受它。

    SELECT
        COUNT(*) AS `RecordCount`, `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`,
        (CASE
            WHEN (`EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN '2018-12-31'
            WHEN (`EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            ELSE `EndDateTCDR`
        END) AS `EndDate`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            ELSE `StartDateTCDR`
        END) AS `StartDate`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN (
                CASE
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
                    ELSE '< 10'
                END
            )
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` > '1001-01-01') THEN (
                CASE
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
                    ELSE '< 10'
                END
            )
        END) AS `TCDRLength`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN (
                ROUND((DATEDIFF('2018-12-31', `StartDateTCDR`) / 365), 2)
            )
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` > '1001-01-01') THEN (
                ROUND((DATEDIFF(`EndDateTCDR`, `StartDateTCDR`) / 365), 2)
            )
        END) AS `ActualLength`
    FROM `data_records`
    LEFT JOIN `RespOrgLUT`
        ON `ResponsibleOrgIn` = `ResponsibleOrg`
    GROUP BY `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`, `StartDate`, `EndDate`, `ActualLength`, `TCDRLength`
    ORDER BY `ResponsibleOrg` ASC, `RecordCount` DESC, `ResponsibleOrgOut` ASC, `ActualLength` DESC, `TCDRLength` DESC
    LIMIT 0, 2000

    SELECT
        COUNT(*) AS `RecordCount`, `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`,
        (CASE
            WHEN (`EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN '2018-12-31'
            WHEN (`EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            ELSE `EndDateTCDR`
        END) AS `EndDate`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            ELSE `StartDateTCDR`
        END) AS `StartDate`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN (
                CASE
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
                    WHEN (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
                    ELSE '< 10'
                END
            )
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` > '1001-01-01') THEN (
                CASE
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30) THEN '>= 30 (inclusive)'
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20) THEN '>= 20 (inclusive)'
                    WHEN (YEAR(`EndDateTCDR`) - YEAR(`StartDateTCDR`) - (DATE_FORMAT(`EndDateTCDR`, '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10) THEN '>= 10 (inclusive)'
                    ELSE '< 10'
                END
            )
        END) AS `TCDRLength`,
        (CASE
            WHEN (`StartDateTCDR` < '1001-01-01') THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 1) THEN '-'
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` < '1001-01-01' AND `SpecificEndDate` = 0) THEN (
                ROUND((DATEDIFF('2018-12-31', `StartDateTCDR`) / 365), 2)
            )
            WHEN (`StartDateTCDR` > '1001-01-01' AND `EndDateTCDR` > '1001-01-01') THEN (
                ROUND((DATEDIFF(`EndDateTCDR`, `StartDateTCDR`) / 365), 2)
            )
        END) AS `ActualLength`
    FROM `data_records`
    LEFT JOIN `RespOrgLUT` ON `ResponsibleOrgIn` = `ResponsibleOrg`
    LEFT JOIN (
        SELECT `category`, COUNT(*)
        FROM `data_records` dr
        JOIN (
            SELECT '< 10' AS `category`
            UNION
            SELECT '>= 10'
            UNION
            SELECT '>= 20'
            UNION
            SELECT '>= 30'
        ) AS c
            ON (`category` = '>= 30' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) >= 30))
            OR (`category` = '>= 20' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) >= 20))
            OR (`category` = '>= 10' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) >= 10))
            OR (`category` = '< 10' AND (YEAR('2018-12-31') - YEAR(`dr`.`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`dr`.`StartDateTCDR`, '%m%d')) < 10))
    )
    GROUP BY `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`, `StartDate`, `EndDate`, `ActualLength`, `TCDRLength`
    ORDER BY `ResponsibleOrg` ASC, `RecordCount` DESC, `ResponsibleOrgOut` ASC, `ActualLength` DESC, `TCDRLength` DESC
    LIMIT 0, 2000

SELECT category, COUNT(*)
FROM ...
JOIN (
    SELECT '< 10' AS category
    UNION
    SELECT '>= 10'
    UNION
    SELECT '>= 20'
    UNION
    SELECT '>= 30'
) AS c ON (category = '>= 30' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 30))
        OR (category = '>= 20' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 20))
        OR (category = '>= 10' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) >= 10))
        OR (category = '< 10' AND (YEAR('2018-12-31') - YEAR(`StartDateTCDR`) - (DATE_FORMAT('2018-12-31', '%m%d') < DATE_FORMAT(`StartDateTCDR`, '%m%d')) < 10))
GROUP BY Category, `ExistingPlanned`, `ResponsibleOrg`, `StartDateTCDR`, `EndDateTCDR`, `SpecificEndDate`, `ResponsibleOrgOut`, `StartDate`, `EndDate`, `ActualLength`, `TCDRLength`