SQL Tips and Tricks Archives - Page 184 of 536 - SQL Authority with Pinal Dave

SQL SERVER – Drop All the Foreign Key Constraint in Database – Create All the Foreign Key Constraint in Database

April 11, 2014

Earlier I wrote a blog post about how to Disable and Enable all the Foreign Key Constraint in the Database. It is a very popular article. However, there are some scenarios when user needs to drop and recreate the foreign constraints. Here is a fantastic blog comment by SQL Expert…

SQL SERVER – Finding Jobs Shrinking Database Files – Notes from the Field #023

April 10, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

Notes from the Field, Shrinking Database, SQL Backup and Restore

[Notes from Pinal]: Search on the internet about ‘Shrinking Database’, you will find plenty of advice why it is bad and it should not be done. If you do not believe me, just try it yourself. Even I have blogged about it before that it is an absolutely bad thing…

MySQL – Finding First day and Last day of a Month

April 9, 2014

Pinal Dave

SQL, SQL Tips and Tricks

MySQL, SQL DateTime

MySQL supports a lot of DATE and TIME related functions. If you want to find out last day of a month, you can make use of an inbuilt function named LAST_DAY. SET @date:='2012-07-11'; SELECT LAST_DAY(@date) AS last_day; The above code returns the value 2012-07-31 However, there is no inbuilt function…

SQL SERVER – Fix – Error 1759 Computed column in table is not allowed to be used in another computed-column definition

April 6, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Error Messages

This is a very common error with beginning developers when they start working with computed columns. When a new developer finds a joy of computed column, it is very natural to use the same computed column for other columns. However, a computed column cannot be used in another computed column…

SQL SERVER – Unable to ALTER Computed Column in SQL Server – How to ALTER Computed Column

April 5, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

A Very common question, I often receive is Q: “How to ALTER computed columns?” A: There is NO way to alter computed column. You will have to drop and recreate it. Here is a demonstration of it. If you try to alter the computed column it will throw following error.…

SQL SERVER – Finding Last Backup Time for All Database – Last Full, Differential and Log Backup

April 4, 2014

Pinal Dave

SQL Tips and Tricks

SQL Backup, SQL Scripts, SQL Server

About four years ago, I wrote a blog post where I posted a script about finding backup time for all the databases. You can see the blog post over here SQL SERVER – Finding Last Backup Time for All Database. It has been a very popular script. However, this script was just giving details about last full backup time. SQL Expert Sravani has posted a fantastic script which also displays last full, differential and log backup for the database.

Developer – How To Market Yourself as a Software Developer

April 2, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

Best Practices

“Everybody wants to make money and build a successful environment around and it is a universal truth my friend”, John mentioned to me while we were talking on Skype earlier this year. Conversation: John and Pinal John is the founder of simpleprogrammer.com and a very close friend of mine. We…