sql 联合查询

SELECT NZD_Products.Prd_typename a FROM  dbo.NZD_Products where dbo.NZD_Products.Prd_barcodenumber = ‘PD20090413‘
union
select NZD_Seed.Seed_Category a from dbo.NZD_Seed where dbo.NZD_Seed.id = ‘13‘

时间: 2024-10-12 09:26:20

sql 联合查询的相关文章

SQL 联合查询 + XML解析

(select a.EBILLNO, a.EMPNAME, a.APPLYDATE, b.HS_NAME, replace(replace(a.SUMMARY,char(10), ''),char(13),'') as SUMMARY, cast(c.XmlData as XML).value('(/List/item/No/text())[1]','NVARCHAR(300)') as No, cast(c.XmlData as XML).value('(/List/item/zje/text

数据库sql联合查询mid类型的分页数据取不了全部的值错误

USE [Travel]GO/****** Object:  StoredProcedure [dbo].[NoticeGetPagedData]    Script Date: 06/13/2014 20:44:51 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOALTER PROCEDURE [dbo].[NoticeGetPagedData]@pageIndex int = 1,--页码@pageSize int =10,--页容量

SQL联合查询(内联、左联、右联、全联)语法

SQL联合查询(内联.左联.右联.全联)语法 概述: 联合查询效率较高,举例子来说明联合查询:内联inner join .左联left outer join .右联right outer join  .全联full outer join 的好处及用法. 联合查询效率较高,以下例子来说明联合查询(内联.左联.右联.全联)的好处: T1表结构            (用户名,密码) userid(int) username            varchar(20) password       

SQL联合查询:子表任一记录与主表联合查询

今天有网友群里提了这样一个关于SQL联合查询的需求: 一.有热心网友的方案: 二.我的方案: select * from ( select a.*,(select top 1 Id from B as b where b.CgId =a.ID)as bid from A as a ) as temp left join B as b2 on temp.bid=b2.Id

SQL联合查询中的关键语法(转)

联合查询效率较高.以下例子来说明联合查询的好处 t1表结构(用户名,密码)    userid int         username   varchar(20)     password       varchar(20) 1                    jack                           jackpwd 2                    owen                        owenpwd t3表结构(用户积分,等级)    u

SQL联合查询中的关键语法

联合查询效率较高.以下例子来说明联合查询的好处 t1表结构(用户名,密码)    userid int         username   varchar(20)     password       varchar(20) 1                    jack                           jackpwd 2                    owen                        owenpwd t3表结构(用户积分,等级)    u

SQL联合查询

[原文链接] http://www.cnblogs.com/aaapeng/archive/2010/01/20/1652151.html#commentform 联合查询效率较高.以下例子来说明联合查询的好处 t1表结构(用户名,密码)    userid int         username   varchar(20)     password       varchar(20) 1                    jack                           ja

hibernate用sql联合查询数据库

@RequestMapping(value = "/FeedPager.cqzk")     @ResponseBody     public String url_sa1(HttpServletRequest request, BootPage page)             throws ServletException, IOException, RuntimeException {         @SuppressWarnings("unchecked"

sql 联合查询速度慢,需要对其进行分组

分组:SELECT   * FROM(SELECT ROW_NUMBER() OVER(ORDER BY  ProjID) as row_number,* FROM ( select ProjApplyDate,projProperty,ProjID,ProjStatusCurrent,ProjGuId,ProjEtpId,ProjRegionId,ProjName,ProjAddress,ProjAreaSize,ProjCost,ProjCreateTime,ProjChargePerson

sql联合查询多个表

SELECT hp_patient.name, hp_ptorders.DrugName, hp_ptorders.Dosage,hp_ptorders.DosageUnitFROM hp_patientLEFT JOIN hp_ptordersON hp_patient.pid=hp_ptorders.PtIdORDER BY hp_patient.name