上一篇讲了一些MySQL比较常用的SQL语句写法，这篇再记录下，平时可能会用到的复杂点的查询语句的写法。
复杂查询语句一般是在报表查询中比较常见，大象之前在“使用jxl生成复杂报表的分析与设计（二）”中就讲过，处理复杂报表，首先需要搞清楚它的业务关系，这个非常关键，如果你连这些业务都没弄明白就开始动手做，最后肯定是会有问题的。 搞清楚业务关系后，就可以对报表进行分解，看看到底要准备什么数据，按照这些数据加上对应的业务关系来写SQL语句，一步一步做下来，就可以实现所需要的功能了。大家应该看到下面两个例子都是查询语句，但是如果我们在前面加上INSERT INTO TABLE (COLUMN1, COLUMN2,
COLUMN3,...)语句，我们就可以将数据插入到统计结果表中，这样每次查询的时候，就可以只查一张表就行了，这样效率是不是提高了很多呢？
查询项目数据与销售统计
SELECT
a.*, f.ORG_NAME DEPT_NAME,
IFNULL(d.CONT_COUNT, 0) SIGN_CONT_COUNT,
IFNULL(d.TOTAL_PRICE, 0) SIGN_CONT_MONEY,
IFNULL(c.CONT_COUNT, 0) SIGN_ARRI_CONT_COUNT,
IFNULL(c.TOTAL_PRICE, 0) SIGN_ARRI_CONT_MONEY,
IFNULL(b.CONT_COUNT, 0) TOTAL_ARRI_CONT_COUNT,
IFNULL(b.TOTAL_PRICE, 0) TOTAL_ARRI_MONEY,
0 PUBLISH_TOTAL_COUNT,
0 PROJECT_COUNT,
0 COMMON_COUNT,
0 STOCK_COUNT,
0 MERGER_COUNT,
0 INDUSTRY_COUNT,
0 BRAND_COUNT
FROM
(
-- 查询包含客户经理,部门主管,公司主管三种类型所有分公司的人员
SELECT
u.USER_ID,
u.REAL_NAME,
u.ORG_PARENT_ID,
o.ORG_NAME,
u.ORG_ID
FROM
SE_USER u
INNER JOIN SE_ORGANIZ o ON u.ORG_PARENT_ID = o.ORG_ID
WHERE
u.`STATUS` = 1
AND u.`LEVEL` IN (1, 2, 3)
AND o.PARENT_ID <> 0
) a
-- 查询部门名称
LEFT JOIN SE_ORGANIZ f ON a.ORG_ID = f.ORG_ID
-- 签约合同数与合同金额
LEFT JOIN (
SELECT
CUST_MGR_ID,
COUNT(CONT_ID) CONT_COUNT,
SUM(TOTAL_PRICE) TOTAL_PRICE
FROM
SE_CONTRACT
WHERE
DATE_FORMAT(CREATE_TIME, '%Y-%m-%d') = '2012-06-08'
GROUP BY
CUST_MGR_ID
) d ON a.USER_ID = d.CUST_MGR_ID
-- 签约并回款合同数与回款金额
LEFT JOIN (
SELECT
CUST_MGR_ID,
COUNT(CONT_ID) CONT_COUNT,
SUM(TOTAL_PRICE) TOTAL_PRICE
FROM
SE_CONTRACT
WHERE
(STATUS = 6 OR STATUS = 10)
AND DATE_FORMAT(CREATE_TIME, '%Y-%m-%d') = '2012-06-08'
GROUP BY
CUST_MGR_ID
) c ON a.USER_ID = c.CUST_MGR_ID
-- 总回款合同数与总回款金额
LEFT JOIN (
SELECT
c.CUST_MGR_ID,
COUNT(c.CONT_ID) CONT_COUNT,
SUM(c.TOTAL_PRICE) TOTAL_PRICE
FROM
SE_CONTRACT c
INNER JOIN SE_CONT_AUDIT a ON c.CONT_ID = a.CONT_ID
WHERE
(c. STATUS = 6 OR c. STATUS = 10)
AND a.IS_PASS = 1
AND DATE_FORMAT(a.AUDIT_TIME, '%Y-%m-%d') = '2012-06-08'
GROUP BY
c.CUST_MGR_ID
) b ON a.USER_ID = b.CUST_MGR_ID
ORDER BY
a.ORG_PARENT_ID,
a.USER_ID
项目数据月度环比SELECT
k.*,
IF (
k.LAST_PUBLISH_TOTAL_COUNT > 0,
ROUND((k.RISE_PUBLISH_TOTAL_COUNT / k.LAST_PUBLISH_TOTAL_COUNT) * 100, 2),
0
) RELATIVE_PUBLISH_RATIO,
IF (
k.LAST_PROJECT_COUNT > 0,
ROUND((k.RISE_PROJECT_COUNT / k.LAST_PROJECT_COUNT) * 100, 2),
0
) RELATIVE_PROJECT_RATIO,
IF (
k.LAST_COMMON_COUNT > 0,
ROUND((k.RISE_COMMON_COUNT / k.LAST_COMMON_COUNT) * 100, 2),
0
) RELATIVE_COMMON_RATIO
FROM
(
SELECT
m.ORG_NAME,
IFNULL(n.LAST_PUBLISH_TOTAL_COUNT, 0) LAST_PUBLISH_TOTAL_COUNT,
IFNULL(n.LAST_PROJECT_COUNT, 0) LAST_PROJECT_COUNT,
IFNULL(n.LAST_COMMON_COUNT, 0) LAST_COMMON_COUNT,
m.PUBLISH_TOTAL_COUNT,
m.PROJECT_COUNT,
m.COMMON_COUNT,
IFNULL(m.PUBLISH_TOTAL_COUNT - n.LAST_PUBLISH_TOTAL_COUNT, 0) RISE_PUBLISH_TOTAL_COUNT,
IFNULL(m.PROJECT_COUNT - n.LAST_PROJECT_COUNT, 0) RISE_PROJECT_COUNT,
IFNULL(m.COMMON_COUNT - n.LAST_COMMON_COUNT, 0) RISE_COMMON_COUNT
FROM
(
SELECT
'全国' AS ORG_NAME,
SUM(PUBLISH_TOTAL_COUNT) AS PUBLISH_TOTAL_COUNT,
SUM(PROJECT_COUNT) AS PROJECT_COUNT,
SUM(COMMON_COUNT) AS COMMON_COUNT
FROM
SE_STAT_ORG
WHERE
DATE_FORMAT(RECORD_DATE, '%Y-%m') = '2012-07'
) m
LEFT JOIN (
SELECT
'全国' AS ORG_NAME,
SUM(PUBLISH_TOTAL_COUNT) AS LAST_PUBLISH_TOTAL_COUNT,
SUM(PROJECT_COUNT) AS LAST_PROJECT_COUNT,
SUM(COMMON_COUNT) AS LAST_COMMON_COUNT
FROM
SE_STAT_ORG
WHERE
DATE_FORMAT(RECORD_DATE, '%Y-%m') = '2012-06'
) n ON m.ORG_NAME = n.ORG_NAME
UNION
SELECT
a.ORG_NAME,
IFNULL(b.LAST_PUBLISH_TOTAL_COUNT, 0) LAST_PUBLISH_TOTAL_COUNT,
IFNULL(b.LAST_PROJECT_COUNT, 0) LAST_PROJECT_COUNT,
IFNULL(b.LAST_COMMON_COUNT, 0) LAST_COMMON_COUNT,
a.PUBLISH_TOTAL_COUNT,
a.PROJECT_COUNT,
a.COMMON_COUNT,
IFNULL(a.PUBLISH_TOTAL_COUNT - b.LAST_PUBLISH_TOTAL_COUNT, 0) RISE_PUBLISH_TOTAL_COUNT,
IFNULL(a.PROJECT_COUNT - b.LAST_PROJECT_COUNT, 0) RISE_PROJECT_COUNT,
IFNULL(a.COMMON_COUNT - b.LAST_COMMON_COUNT, 0) RISE_COMMON_COUNT
FROM
(
SELECT
ORG_ID,
ORG_NAME,
SUM(PUBLISH_TOTAL_COUNT) AS PUBLISH_TOTAL_COUNT,
SUM(PROJECT_COUNT) AS PROJECT_COUNT,
SUM(COMMON_COUNT) AS COMMON_COUNT
FROM
SE_STAT_ORG
WHERE
DATE_FORMAT(RECORD_DATE, '%Y-%m') = '2012-07'
GROUP BY
ORG_ID
) a
LEFT JOIN (
SELECT
ORG_ID,
SUM(PUBLISH_TOTAL_COUNT) AS LAST_PUBLISH_TOTAL_COUNT,
SUM(PROJECT_COUNT) AS LAST_PROJECT_COUNT,
SUM(COMMON_COUNT) AS LAST_COMMON_COUNT
FROM
SE_STAT_ORG
WHERE
DATE_FORMAT(RECORD_DATE, '%Y-%m') = '2012-06'
GROUP BY
ORG_ID
) b ON a.ORG_ID = b.ORG_ID
) k
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posted on 2015-02-02 10:04
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