Sybase Select语句 [英] Sybase Select Statement

问题描述

我正尝试在某些特定条件下进行选择，但似乎无法获得我想要的东西.

I am trying to select with some specific conditions but cannot seem to get what I am wanting.

餐桌人物 person_id | first_name |姓

Table Person person_id | first_name | last_name

餐桌服务 service_id | person_id | start_time |结束时间| service_type_id

Table Service service_id | person_id | start_time | end_time | service_type_id

表Service_Types type_id |说明

Table Service_Types type_id | description

表Service_User service_id | start_time | end_Time | user_id

Table Service_User service_id | start_time | end_Time | user_id

目标是获取满足以下任何条件的所有person_id:

The goal is to get all of the person_id's that meet any of the following criteria:

1. "Mar％"之类的姓氏
2. 融合％"之类的服务类型
3. 2009年1月1日或之后的"New％"和User_Id ="Bob"且Start_Time之类的服务类型

这是我一直在尝试使用的语句:

Here's the statement I have been trying to use:

SELECT DISTINCT person_id FROM person P,service S, service_types ST, service_user SU WHERE P.person_id = S.person_id AND S.service_id = SU.service_id AND ST.type_id = S.service_type_id AND (P.last_name LIKE 'Mar%' OR ST.description LIKE 'Fusions%') OR (ST.description LIKE 'New%' AND SU.user_id = 'Bob' AND start_time >= '2009-01-01')

推荐答案

您的最后一个条件应该是

Your last condition should be

AND ((P.last_name LIKE 'Mar%' OR ST.description LIKE 'Fusions%') 
OR (ST.description LIKE 'New%' AND SU.user_id = 'Bob' AND start_time >=  2009-01-01'))

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