如何检查记录是否已存在 [英] How to Check if a record already Exists

问题描述

亲爱的编码员，

我想要一个sql语句来检查vb项目中是否已经存在数据.数据类型为varchar(50).请帮忙.

Dear Coders,

I would like to have a sql statement to check if a data already exists in the vb project. the datatype is varchar(50). Please Help.

推荐答案

此链接将帮助您编写代码-

http://www.digitalcoding.com/Code-Snippets/VB/Visual-Basic-Code-Snippet-Check-Record-Exists-in-SQL-Server-Database.html

This link will help you to code-

http://www.digitalcoding.com/Code-Snippets/VB/Visual-Basic-Code-Snippet-Check-Record-Exists-in-SQL-Server-Database.html

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