Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
329 views
in Technique[技术] by (71.8m points)

mysql - Best way to retrieve last records values inserted into database

I'm saving a record into a customer table, and the customer table has an customer number that auto increments. I would like to know what is the best way to get that newly generated customer number directly after it was created? For example, let us say the customer table has 3 columns, ID, Name, Surname. I use the following code:

database.tbCustomer.Insert;
database.tbCustomerName.Value := edtName.Text;
database.tbCustomerSurname.Value := edtSurname.Text;
database.tbCustomer.Post;

So once I have done this, I need to get the ID that was created, as I need to use that as a FK in another table. So the easy way I suppose is to just go to the last record in the customer table, but that gives problems if more then 1 person is creating customers.

database.tbCustomer.Last;

but that approach can lead to the wrong ID being returned if more then 1 customer gets created at the same time. So how would I get the customer ID for the customer that I just created? Using Delphi, and storing the data on mysQL, using FireDAC.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Probably what you are looking for is GetLastAutoGenValue. See the documentation


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...