如何编写查询以将记录名称添加到主表中

本文介绍了如何编写查询以将记录名称添加到主表中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我有一个问题，写我的问题是我想写一个这样的查询 在我的数据库中有一个主表联系人在那有两个字段Category1Code和Category2Code，但我想将这些代码替换为name.There为Category1Code和Category2Code表。 表结构是这样的 联系人 联系ID类别1代码Category2Code FirstName LastName C000001 C1018 C2025 ABC XYZ category1code表看起来像这样 Category1Code CategoryName C1018 PQR category2code表 Category2Code Category1Code分类名称 C2001 C1018 TTT i想要将这些代码替换为其名称进入联系表。 请提前查询 thnx .. 最后我要输出这样的进入联系表 ContactID Category1Code Category2Code FirstName LastName C000001 PQR TTT ABC XYZ i have one problem for writing query my problem is that i want write a query like thisin my database there is one main table "Contacts" in that there is two field Category1Code and Category2Code but i want to replace these Code into name.There is table for Category1Code and Category2Code.table structure is like this"Contacts" ContactID Category1Code Category2Code FirstName LastNameC000001 C1018 C2025 ABC XYZthe category1code table look like thisCategory1Code CategoryName C1018 PQRthe category2code tableCategory2Code Category1Code CategorynameC2001 C1018 TTTi want replace these code into its name into Contact table.Please give querythnx in advance..Finally i want output like this into Contact tableContactID Category1Code Category2Code FirstName LastNameC000001 PQR TTT ABC XYZ推荐答案 alter procedure sp_contacts(@Category1Code nvarchar(20), @Category2Code nvarchar(20), @FirstName nvarchar(20), @LastName nvarchar(20))AS beginDeclare @CategoryName1 varchar(20)Declare @CategoryName2 varchar(20)select @CategoryName1= CategoryName from Category1Code where Category1Code = @Category1Code select @CategoryName2= CategoryName from Category2Code where Category2Code = @Category2Code and Category1Code = @Category1Code Insert Into contacts(Category1Code ,Category2Code ,FirstName,LastName)values(@Category1Code ,@Category2Code ,@FirstName,@LastName)update contacts set Category1Code= @CategoryName1,Category2Code= @CategoryName2 where Category1Code = @Category1Code and Category2Code = @Category2Codeend exec sp_contacts 'C1018', 'C2001', 'ABC','XYZ' i希望它有所帮助。i hope it helps. 这篇关于如何编写查询以将记录名称添加到主表中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！