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Within SQL Server an index is used to optimise the reading of data from the database. However the side effect of having such an index is reduced write speed for inserts and updates. This is because SQL Server will need […]
With the Azure SQL Database, sometimes you want to view the current running transactions. Unfortunately there is no GUI as such like there is with normal SQL Server (right click, “Activity Monitor”), however it can be grabbed by executing sys.dm_exec_requests. […]
Recently I’ve been doing some work on optimising indexes within Azure SQL Database. The following SQL from Daniel is very useful in showing the status of all the current indexes within a SQL Database. The SQL works for both SQL […]
Recently I’ve had to delete duplicate records from the Record Link table in Microsoft Dynamics Nav. Using the following SQL, (which uses the OVER clause for partitioning) this deletes all duplicate records, leaving the first unique item behind. The SQL […]
Within SQL Server, sys.dm_db_missing_index_details returns indexes which it believes are required by the Query Optimiser. Basically as queries are run in the background, the Query Optimiser makes a record of any optimisations it feels are necessary. Restarting the SQL server […]
With Microsoft Dynamics Nav, there are various ways of viewing all the active sessions within the system. The easiest of which is the “Sessions” page within the software itself: The downside of this, is that it only shows active sessions […]
With a recent project, I’ve had to reproduce a table from a Microsoft SQL Database into a MySQL Database. The table had lots of fields and would be very time consuming to write the SQL to create the table, but […]
Within a recent project, I’ve been extracting data from Microsoft Dynamics NAV using Taskcentre. Within NAV, decimals are stored as decimal(38,20), complete will all 20 decimal places..! The following SQL query is very handy at removing the un-required decimal places […]
With SQL server and 3rd party backup software, it can sometimes be difficult to tell when the last SQL backup has been taken and if the backup software has actually performed the backup or not. There are 3 main backup […]
When using the “ODBC” or “OLEDB” tools in TaskCentre, it may appear that a single query is executed on the database. In actual fact from trial and error, I have identified multiple queries are being called. For example, if you […]