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Delphi3 & SQL Anywhere

Posted on 1997-11-10
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Last Modified: 2010-04-04
These questions relate to Delphi3 with SQL Anywhere.
1. Using tables with autoIncrement fields. After insert/post the value assigned to the autoIncrement field is not available. To get it I need to do a last with the field as the index. This is not good.
The value is available after the post when using Paradox and Access tables.

2. When using a TQuery and a DBGrid, new records do not appear in the grid unless I refresh the query by close/open. If I substitute a TTable it works fine.

I must be missing something in the SQL Anywhere/odbc options but just what escapes me.
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Question by:wilkinsbryan
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anilms earned 150 total points
ID: 1349863
But that is the way an RDBMS like Sybase/MS SQL Server/Oracle works. It is the case not ony with Delphi, it is the same with VB also.

1. Paradox gives you the data updated immediately because you are using a TTable.

2. If you are using TQuery and DBGrid with Paradox/DBF, then also you have to do a refresh by close/open to update the view. Otherwise it will not reflect the latest status.

You are not missing anything anywhere, it is the way it works with RDBMS.
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Author Comment

by:wilkinsbryan
ID: 1349864
Thank you for that.
I was not specific enough in my second question. The records which do not appear are the ones added by the user. They are added to the DBGrid and when the grid is scrolled the record is no longer there. This does not seem to good.
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Author Comment

by:wilkinsbryan
ID: 1349865
Further info, FYI
I got a response from the Delphi news group which suggested that I use 'select @@identity' to get the autoIncrement number. Works fine.
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