1、单查询内,SELECT、FROM、WHERE、GROUP、ORDER各一行 SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ------------------ 包括SELECT\WHERE\GROUP BY 2、过长的行要分行 SELECT XXXXXXXXXXXXX,XXXXcXXXXXXXXXXX,XXXXXXXXXcXXXXXXXXXXXXXX,XXXXXXXXXXXXXXXXX,XXXXXXXXX,XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX select T1.AAA AS `SDFSS` ,T2.BBB AS `ERWOEN` ,T2.BBB AS `ERWOEN` ,T2.BBB AS `ERWOEN` ,CASE WHEN T2.XXXXXXXXXXXX BETWEEN XXXXXXXXXXXX AND XXXXXXXXXX THEN CASE WHEN XXXXXXXXXX THEN XXXXXXXXXX ELSE XXXXXXXX END ELSE 0 END AS `ERWOEN` 3、缩进 SELECT FROM (SELECT XXXX SERNWOEINRSDFOWNE SDFNWOEIR' ASDFWONEINRRWOEIRNSFNWER) T INNER JOIN (SDFNNOWEINRIOWNEEROIN) ON SDFNOWOERNOWINERON SELECT FROM ( SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ) T INNER JOIN ( SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ) T2 ON T1.XXXX=T2.XXXXX where (datac.INMCU_1 = '-' or datac.INMCU_1 in ( SELECT DISTINCT CIMCU FROM ( SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ) A LEFT JOIN F0006 B ON A.CIMCU = B.MCMCU WHERE A.CIGLPO = 'Y' )
时间: 2023-04-08 19:05:11 浏览: 80
我可以回答这个问题。第一个问题是一个SQL查询语句,包括SELECT、FROM、WHERE、GROUP BY和ORDER BY。第二个问题是一个SQL查询语句,其中包括一个CASE语句和一些别名。第三个问题是一个SQL查询语句,其中包括两个子查询和一个INNER JOIN。其中,WHERE子句包括一个IN子查询。
相关问题
1、单查询内,SELECT、FROM、WHERE、GROUP、ORDER各一行 SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ------------------ 包括SELECT\WHERE\GROUP BY 2、过长的行要分行 SELECT XXXXXXXXXXXXX,XXXXcXXXXXXXXXXX,XXXXXXXXXcXXXXXXXXXXXXXX,XXXXXXXXXXXXXXXXX,XXXXXXXXX,XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX select T1.AAA AS `SDFSS` ,T2.BBB AS `ERWOEN` ,T2.BBB AS `ERWOEN` ,T2.BBB AS `ERWOEN` ,CASE WHEN T2.XXXXXXXXXXXX BETWEEN XXXXXXXXXXXX AND XXXXXXXXXX THEN CASE WHEN XXXXXXXXXX THEN XXXXXXXXXX ELSE XXXXXXXX END ELSE 0 END AS `ERWOEN` 3、缩进 SELECT FROM (SELECT XXXX SERNWOEINRSDFOWNE SDFNWOEIR' ASDFWONEINRRWOEIRNSFNWER) T INNER JOIN (SDFNNOWEINRIOWNEEROIN) ON SDFNOWOERNOWINERON SELECT FROM ( SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ) T INNER JOIN ( SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ) T2 ON T1.XXXX=T2.XXXXX where (datac.INMCU_1 = '-' or datac.INMCU_1 in ( SELECT DISTINCT CIMCU FROM ( SELECT XXX FROM XXX WHERE 1=1 AND XX GROUP BY XXXX ORDER BY XX ) A LEFT JOIN F0006 B ON A.CIMCU = B.MCMCU WHERE A.CIGLPO = 'Y' ) 优化美观
1、单查询内,SELECT、FROM、WHERE、GROUP、ORDER各一行:
SELECT XXX
FROM XXX
WHERE 1=1
AND XX
GROUP BY XXXX
ORDER BY XX
2、过长的行要分行:
SELECT XXXXXXXXXXXXX,
XXXXcXXXXXXXXXXX,
XXXXXXXXXcXXXXXXXXXXXXXX,
XXXXXXXXXXXXXXXX,
XXXXX,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
SELECT T1.AAA AS `SDFSS`,
T2.BBB AS `ERWOEN`,
T2.BBB AS `ERWOEN`,
T2.BBB AS `ERWOEN`,
CASE WHEN T2.XXXXXXXXXXXX BETWEEN XXXXXXXXXXXX AND XXXXXXXXXX
THEN CASE WHEN XXXXXXXXXX THEN XXXXXXXXXX ELSE XXXXXXXX END
ELSE 0
END AS `ERWOEN`
3、缩进:
SELECT
FROM (
SELECT XXXX
SERNWOEINRSDFOWNE
SDFNWOEIR' ASDFWONEINRRWOEIRNSFNWER
) T
INNER JOIN (
SDFNNOWEINRIOWNEEROIN
) ON SDFNOWOERNOWINERON
SELECT
FROM (
SELECT XXX
FROM XXX
WHERE 1=1
AND XX
GROUP BY XXXX
ORDER BY XX
) T
INNER JOIN (
SELECT XXX
FROM XXX
WHERE 1=1
AND XX
GROUP BY XXXX
ORDER BY XX
) T2
ON T1.XXXX=T2.XXXXX
WHERE (
datac.INMCU_1 = '-'
OR datac.INMCU_1 IN (
SELECT DISTINCT CIMCU
FROM (
SELECT XXX
FROM XXX
WHERE 1=1
AND XX
GROUP BY XXXX
ORDER BY XX
) A
LEFT JOIN F0006 B
ON A.CIMCU = B.MCMCU
WHERE A.CIGLPO = 'Y'
)
)
希望能对您有所帮助。
优化mysql脚本;SELECT 购买渠道,IFNULL(`支付年月`,'时段合计')支付年月,IFNULL(`子品牌`,'子品牌合计')子品牌,SUM(`商品实付金额`) from valid_order WHERE 支付日期>DATE_SUB('2022-03-31', INTERVAL 2 month) AND 支付日期<='2022-03-31' GROUP BY GROUPING SETS ((购买渠道,支付年月),(购买渠道,子品牌),(购买渠道,子品牌,支付年月),(购买渠道,支付年月,子品牌))
可以尝试以下优化措施:
1. 添加索引:在 `valid_order` 表中添加适当的索引,以加快查询速度。可以根据查询条件添加索引,例如 `支付日期`、`购买渠道`、`支付年月`、`子品牌` 等列。
2. 减少数据量:可以通过添加其他条件来减少查询的数据量,例如在 `WHERE` 子句中添加商品类型、地区、订单状态等条件,以缩小查询范围。
3. 使用子查询:可以将 `valid_order` 表中的需要的数据先进行筛选,然后再进行分组和聚合操作,减少不必要的数据扫描。
4. 精简分组:尽量减少分组的列数,避免使用 `GROUPING SETS` 等复杂的分组方式,可以通过多次查询并使用 `UNION ALL` 合并结果的方式来达到同样的效果。
优化后的 SQL 脚本如下:
```
SELECT 购买渠道, IFNULL(`支付年月`, '时段合计') AS 支付年月, IFNULL(`子品牌`, '子品牌合计') AS 子品牌, SUM(`商品实付金额`)
FROM (
SELECT `购买渠道`, `支付年月`, `子品牌`, `商品实付金额`
FROM `valid_order`
WHERE `支付日期` > DATE_SUB('2022-03-31', INTERVAL 2 MONTH) AND `支付日期` <= '2022-03-31'
AND `商品类型` = 'xxx' AND `地区` = 'xxx' AND `订单状态` = 'xxx'
) t
GROUP BY 购买渠道, 支付年月, 子品牌
UNION ALL
SELECT 购买渠道, IFNULL(`支付年月`, '时段合计') AS 支付年月, NULL AS 子品牌, SUM(`商品实付金额`)
FROM (
SELECT `购买渠道`, `支付年月`, `商品实付金额`
FROM `valid_order`
WHERE `支付日期` > DATE_SUB('2022-03-31', INTERVAL 2 MONTH) AND `支付日期` <= '2022-03-31'
AND `商品类型` = 'xxx' AND `地区` = 'xxx' AND `订单状态` = 'xxx'
) t
GROUP BY 购买渠道, 支付年月
UNION ALL
SELECT 购买渠道, NULL AS 支付年月, IFNULL(`子品牌`, '子品牌合计') AS 子品牌, SUM(`商品实付金额`)
FROM (
SELECT `购买渠道`, `子品牌`, `商品实付金额`
FROM `valid_order`
WHERE `支付日期` > DATE_SUB('2022-03-31', INTERVAL 2 MONTH) AND `支付日期` <= '2022-03-31'
AND `商品类型` = 'xxx' AND `地区` = 'xxx' AND `订单状态` = 'xxx'
) t
GROUP BY 购买渠道, 子品牌
UNION ALL
SELECT 购买渠道, NULL AS 支付年月, NULL AS 子品牌, SUM(`商品实付金额`)
FROM (
SELECT `购买渠道`, `商品实付金额`
FROM `valid_order`
WHERE `支付日期` > DATE_SUB('2022-03-31', INTERVAL 2 MONTH) AND `支付日期` <= '2022-03-31'
AND `商品类型` = 'xxx' AND `地区` = 'xxx' AND `订单状态` = 'xxx'
) t
GROUP BY 购买渠道;
```
其中,`xxx` 表示需要根据实际情况替换的条件。
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