Releasing free space in mdf file to OS

April 10, 2017 Andy 0

Question We have a 120GB database. There was table with 60GB of data which is useless and we have truncated it. Now database size is 120GB with free space 60GB. The database will not grow up to 60GB in at least 3 months. So can … [Read More]

SQL Triggers not preventing insert

April 10, 2017 Andy 0

Question I am having trouble getting a trigger to work. What it needs to do is to prevent any customer with last name Glass from being inserted into the database. This is what I have: The issue is when I add customers with last name … [Read More]

Converting date stored as a varchar

April 6, 2017 Andy 0

Question I’m creating a query that has a column of dates stored as a VARCHAR in the format DD-MMM-YYYY. Could you tell me how I can convert this into date format please? I don’t want to alter the original table in any way, as it’s … [Read More]

Transaction log is growing very fast

April 5, 2017 Andy 0

Question One of our SQL Server 2014 database transaction logs is growing very fast and I cannot find the root cause for this. Database in Simple recovery mode. During full backup the log file grows to its limits (800GB) and backup fails. I checked the … [Read More]

Nonclustered index storage on clustered columnstore

January 6, 2017 Andy 0

Question In SQL Server, a non-unique nonclustered index on a rowstore table incorporates the base object’s bookmark (RID or clustering key) at all levels of the nonclustered index structure. The bookmark is stored as part of the nonclustered index key at all index levels. On … [Read More]