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 Post subject: LastRecord() in Very Large Table in DB
PostPosted: March 7th, 2013, 1:56 pm 
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Joined: May 25th, 2008, 4:57 pm
Posts: 355
Location: Ireland
Opus: Pro 9.75
OS: Windows 10
System: MacBook Pro (Intel 2020)
Hi Everyone,

I need to select the last record in a very large database via scripting.

Currently I use the following, but when over 2 million records it can be a bit slow as it's doing more processing than needed maybe.


Code:
//THIS SETS THE LAST ENTRY IN THE DB TO THE CURRENT STUDENT
var Rset = KYW_db_usr.ExecuteSQL("SELECT UserName, UserID FROM Users_Records");
Rset.LastRecord();

CurrentStudentName = Rset.UserName;
CurrentStudentID =  Rset.UserID;





Any suggestions for best options, UserID is an auto incrementing number. I was trying to use "SELECT * FROM Users_Records ORDER BY UserID DESC LIMIT 1" SQL but the LIMIT 1 keeps throwing an error.

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Opus Pro 9.75 on MacBookPro (2020 Intel) running Parallels 19 with Windows 10 (x64)


For this message lmc has been thanked by : mackavi


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 Post subject: Re: LastRecord() in Very Large Table in DB
PostPosted: March 8th, 2013, 12:28 pm 
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Godlike
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Joined: March 21st, 2007, 10:44 am
Posts: 3188
Location: UK
Opus: Evolution
What database is it?

Mack

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