How to implement in linq an sql-like : select a.*, b.field1 as b_field from a join b on a.joinkey=b.join and receive c# datatable? My aim is to :linq-join two c# DataTables and to select all columns from the first table(without enumerating the columns) ...
Can I create a SSIS package to get only row 12 to row 123 from an excel sheet..?? Can I have multiple instances of SSIS on a server? Can I preserve carriage returns in a string variable from ...
If you never coded an application that uses triggers you may feel nervous the first time working with them. But in this tip, I will walk through the syntax needed to work with triggers. Working with SQL Server Triggers There are three statements to use to create, modify or delete trigger...
multi-entity Unit-of-Work. There's no need for single-entity repositories. In the question's ...
s a clever idea to track these errors. Things that are error-prone should be captured anyway and, at the very least, logged. You can also put triggers on these logged tables and even set up an email account and get a bit creative in the way of notifying people when an error occurs....
Log statements and monitor to find rouge SQL statements Remove any old code you don’t use. If you don’t need it, it’s better to get rid of it than to leave it as a possible chance to be used in an undesired manner Update your software to ensure all the latest patches are applie...
If user input is inserted without modification into an SQL query, then the application becomes vulnerable to SQL injection, like in the following example: $unsafe_variable = $_POST['user_input']; mysql_query("INSERT INTO `table` (`column`) VALUES ('$unsafe_variable')"); That's because...
SQL Server client alias writes an entry in the client machine’s registry containing the server name and the preferred protocol used to connect. Each time a new client connection is made, this registry key is first checked to see if there is a preferred interprocess communication (IPC). The...
AFTER INSERT and AFTER UPDATE triggers on same table After INSERT Trigger question - how to use value from last added record Age Bucket in sql Age calculation in report builder query Aggregated CASE expressions versus the PIVOT operator… Is one better than the other? Aging Report SQL Query ...
You’ll add sample data to thesalesdata in the coming steps while testing the triggers. Next, create anaudit_logtable to log updates made to thesalestable when you implement theAFTER UPDATEtrigger in Step 5: Create tableaudit_log(log_id BIGINT PRIMARY KEY AUTO_INCREMENT, sales...