记录测试工作中，常用的一些sql语句
Navicat连接测试Mysql数据库
1.查询项目名称为：HMFtest和业务类型为：传播-论坛的信息
多表查询(这里是三表)需要用到LEFT Join ON
t1project 项目表
t1projectbusitype 项目类型表
t1probusitypedata 项目类型数据表
例子：
SELECT
*
FROM
t1project tp
LEFT JOIN t1projectbusitype tbt ON tbt.FProjectMainStruID = tp.FID
LEFT JOIN t1probusitypedata tbtd ON tbtd.FID = tbt.BUSITYPEID
WHERE
tp.FNAME = "HMFtest" and tbtd.FNAME="传播-论坛"
2.查询(项目名称为：HMFtest,业务类型为“创意-视频”)中有效的订单明细：
多表查询：5张表
t1costsettle 订单成本结算
t1costsettledetail 订单成本结算明细表
t1project 项目表
t1projectbusitype 项目类型表
t1probusitypedata 项目类型数据表
需要的字段：
IDENTIFY=1(如IDENTIFY=1代表有效的成本明细)
FAUDITSTATUS 订单审核状态(1-3为有效)
FBILLAUDITSTATUS 订单单据审核状态(审核状态-1,4为有效)
sql语句，查询到5条记录
SELECT tp.F1NAME,tbtd.FNAME,tsd.* from t1c1ostsettledetail tsd
LEFT JOIN t1costsettle ts on tsd.FCostSettleMainStruID=ts.FID
LEFT JOIN t1project tp ON tp.FID = ts.PROJECTID
LEFT JOIN t1projectbusitype tbt ON tbt.FID = ts.PROBUSITYPEID
LEFT JOIN t1probusitypedata tbtd ON tbtd.FID = tbt.BUSITYPEID
where tp.FNAME="HMFtest" and tbtd.FNAME="创意-视频" and tsd.FAUDITSTATUS in (1,3) and tsd.FBILLAUDITSTATUS not in (-1,4) and tsd.IDENTIFY=1
3.查询用户：胡的订单列表并按日期倒序排序
SELECT
ti.title,
ti.inquiry_date_start,
ti.inquiry_date_end,
ti.inquiry_type,
ti.inquiry_status,
tuser.FNAME,
ti.create_date
FROM
t_inquiry ti
LEFT JOIN tuser ON tuser.FID = ti.create_person_id
WHERE
tuser.FNAME = "胡"
ORDER BY ti.create_date DESC
5.查询创建人为“王燕”和订单编号为19030011的订单详细信息
SELECT * from t1costsettledetail s1,tuser s2 where s1.MARKBILLPERSONID=s2.FID and s2.FNAME="王燕" and s1.FBILLSERIALNUM="19030011"
6.查询价格为第2高的订单信息
价格：price 表名：t1costsettledetail
6.1.最大价格的订单信息：select max(price) from t1costsettledetail
6.2.查询价格为第2高的订单信息
select max(price) as secondprice from t1costsettledetail where price <(SELECT max(price) from t1costsettledetail )
或者：
select Distinct price from t1costsettledetail order by price DESC limit 1,1
limi 1,1 -->检索从第2行开始,累计1行(倒序第2就是第2高)
第n高的订单信息,例如第5
select Distinct price from t1costsettledetail order by price DESC limit 4,1
7.对订单进行价格分组统计，并查询价格大于10000的订单分组统计数
SELECT price,count(*) from t1costsettledetail group by price HAVING price>10000
8.模糊查询用户/项目/订单
SELECT * from tuser where FNAME LIKE "%吴"
SELECT * from t1project where FNAME LIKE "%胡"
SELECT * from t1costsettledetail where FNAME LIKE "%华为"
备注：LIMIT的使用例子
select * from t1costsettledetail LIMIT 1;--检索前1行数据，显示1条数据
select * from t1costsettledetail LIMIT 10;--检索前10行数据，显示1-10条数据
select * from t1costsettledetail LIMIT 1,10;--检索从第2行开始，累加10条记录，共显示id为2....11
select * from t1costsettledetail limit 5,10;--检索从第6行开始向前加10条数据，共显示id为6,7....15
select * from t1costsettledetail limit 6,10;--检索从第7行开始向前加10条记录，显示id为7,8...16
select * from t1costsettledetail LIMIT 1,1;--检索从第2行开始，累加1条记录(就是第2行记录)
如果价格不存在第2高的订单，那么查询应返回 null
select IFNULL((select Distinct price from t1costsettledetail order by price DESC limit 1,1),null)
as SecondHighestSalary
