There is always a list of things that can be done. For now the greatest thing I can ask for is feedback. I would value any feedback. Please feel free to Download UltimateLAMP. It’s find to get the comments to say, “That’s great”, or “Good job” or “I can use this”, it’s just as important to get the comments that are proactive in what’s not good. The good, the bad and the ugly.
Reseed can create data integrity problems. It should not be used on a production system in case all related records have not been deleted (not every table that should be in a foreign key relationship is. It is really only for use on development systems where you are wiping out all test data and starting over. It is a bad idea to worry about gaps in you identity field values. You can create a mess doing this and especially if you mean to do it on a regular basis after every delete. You do not want to do this in general.
Using the Identity attribute for a column in SQL Server is a very convenient way to auto-increment a field in a row and generate unique ID’s for use as a primary key. SQL Server 2011 introduces Sequence, which is similar in many respects but is offers greater performance and flexibility – read our full tutorial on Using Sequence in SQL Server 2011.
* `ISBN` varchar(70) collate latin1_general_ci. * * SET SQL_MODE=’NO_AUTO_VALUE_ON_ZERO. Slno` bigint(10) NOT NULL auto_increment. ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci AUTO_INCREMENT=9 ;. * — PHP Version: 5.
It checks the StatementType of the OleDbRowUpdatedEventArgs for inserted rows. SkipCurrentRow to suppress the hidden call to AcceptChanges. For each inserted row a new OleDbCommand is created to execute the SELECT @@IDENTITY statement on the connection, returning the new Autonumber value, which is placed in the CategoryID column of the DataRow. The RowUpdated event handler uses the same open OleDbConnection as the Update statement of the OleDbDataAdapter. In the main body of the procedure, the Merge method is called to merge the two DataTable objects, and finally AcceptChanges is called. The Status property is then set to UpdateStatus.
When the column reaches the upper limit of the data type, the next attempt to generate a sequence number fails. See Section 11. For TINYINT UNSIGNED, the maximum is 255. For example, if you use TINYINT, the maximum permissible sequence number is 127. Use the smallest integer data type for the AUTO_INCREMENT column that is large enough to hold the maximum sequence value you will need. Use the UNSIGNED attribute if possible to allow a greater range. 1, “Integer Types (Exact Value) – INTEGER, INT, SMALLINT, TINYINT, MEDIUMINT, BIGINT” for the ranges of all the integer types.
In this case, the generated value for the AUTO_INCREMENT column is calculated as MAX(auto_increment_column) + 1 WHERE prefix=given-prefix. For MyISAM tables, you can specify AUTO_INCREMENT on a secondary column in a multiple-column index. This is useful when you want to put data into ordered groups.
This example demonstrates extracting changed rows from a DataTable and using a SqlDataAdapter to update the data source and retrieve a new identity column value. The InsertCommand executes two Transact-SQL statements; the first one is the INSERT statement, and the second one is a SELECT statement that uses the SCOPE_IDENTITY function to retrieve the identity value.
I’m submitting my ideas, suggestions and code changes to the project. Of course we can just make noise about what we don’t like, or we can do something about it. What is done about it is outside of my control, but I’ve at least given my input to this Open Source Product.
Aspx view being used which just shows the message “Sorry, an error occurred while processing your request. ” To test
this process, attempt to view details of a product which does not yet exist, such as with a URL as below:. When the HandleError filter is applied without arguments, any exception thrown by the methods covered by the filter will result in the Views/Shared/Error.
The OnRowUpdated event handler checks the StatementType of the SqlRowUpdatedEventArgs to determine if the row is an insert. If it is, then the Status property is set to SkipCurrentRow. In the main body of the procedure, the Merge method is called to merge the new identity value into the original DataTable, and finally AcceptChanges is called. The row is updated, but the original values in the row are preserved.
At this point I should recommend that you use FireFox for future work. The two options most useful for this exercise is:. You should then install the Web Developer Add-on. What results from this plugin is invaluable information about the internals of a web page.