我在MySQL中有两个基本相同的查询,其中唯一的区别是min()
或max()
,我想知道加入这两个是否可行。
我相信两者的结合将再次让我重新脱离接触,减少返工。
我的目标是从第一天和最后一天知道“valor_bruto_atual”。
第一个查询:
SELECT
titulo_id,
SUM(valor_bruto_atual) AS valor_max,
data_imports.data_import AS created_at,
week(data_imports.data_import) AS weeknumber
FROM
ativos_extratos
INNER JOIN
titulos ON titulo_id = titulos.id
INNER JOIN
representantes ON representante_id = representantes.id
INNER JOIN
data_imports ON data_import_id = data_imports.id
WHERE
user_id = 1
AND ativos_extratos.data_import_id IN (SELECT
MAX(ID)
FROM
data_imports
WHERE
data_import BETWEEN '2018-11-01' AND '2018-12-10'
GROUP BY week(data_import))
AND data_imports.data_import BETWEEN '2018-11-01' AND '2018-12-10'
GROUP BY titulos.nome_titulo , weeknumber
ORDER BY data_import ASC , titulos.nome_titulo ASC
第二个查询:
SELECT
titulo_id,
SUM(valor_bruto_atual) AS valor_min,
data_imports.data_import AS created_at,
week(data_imports.data_import) AS weeknumber
FROM
ativos_extratos
INNER JOIN
titulos ON titulo_id = titulos.id
INNER JOIN
representantes ON representante_id = representantes.id
INNER JOIN
data_imports ON data_import_id = data_imports.id
WHERE
user_id = 1
AND ativos_extratos.data_import_id IN (SELECT
MIN(ID)
FROM
data_imports
WHERE
data_import BETWEEN '2018-11-01' AND '2018-12-10'
GROUP BY week(data_import))
AND data_imports.data_import BETWEEN '2018-11-01' AND '2018-12-10'
GROUP BY titulos.nome_titulo , weeknumber
ORDER BY data_import ASC , titulos.nome_titulo ASC
唯一的变化是列的奇特名称以及where where条件下的min()
或max()
函数。
解:
SELECT
titulo_id as titulo_id,
-- calculate both SUMs, select values for each dependent by what value it matches to
SUM(CASE WHEN ativos_extratos.data_import_id = borders.min_id THEN valor_bruto_atual END) AS valor_init,
SUM(CASE WHEN ativos_extratos.data_import_id = borders.max_id THEN valor_bruto_atual END) AS valor_end,
data_imports.data_import AS created_at,
month(data_imports.data_import) AS weeknumber
FROM
ativos_extratos
INNER JOIN
titulos ON titulo_id = titulos.id
INNER JOIN
representantes ON representante_id = representantes.id
INNER JOIN
data_imports ON data_import_id = data_imports.id
-- moved subquery and condition by it from WHERE
INNER JOIN ( SELECT
MIN(ID) as min_id,
MAX(ID) as max_id
FROM
data_imports
WHERE
data_import BETWEEN '2018-10-01' AND '2018-12-10'
GROUP BY month(data_import)
) borders ON ativos_extratos.data_import_id IN (borders.min_id, borders.max_id)
WHERE
user_id = 1
-- removed subquery and condition were there
AND data_imports.data_import BETWEEN '2018-10-01' AND '2018-12-10'
GROUP BY titulos.nome_titulo , weeknumber
ORDER BY data_import ASC , titulos.nome_titulo ASC