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How to show more than 8000 chars in SSMS output

T SQL Date format convert function

If you ever tried to display more than 8000 characters column such as varchar(MAX) column value in SSMS output in text mode then you will quickly realize that you hit the wall. SSMS truncates anything more than 8000 chars (approx.

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Posted in SQL Server, T-SQL Tips, Tips

DISTINCT vs GROUP BY Performance in SQL Query

T SQL Date format convert function

If you ever wonder which one is really faster in Distinct vs Group By Performance Test then I will show some facts in this post so you can write your query accordingly.   To test distinct vs group by performance in SQL Query

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Posted in SQL Server, T-SQL Tips

How to overwrite SQL Server Backup rather than Append Mediaset

T SQL Date format convert function

In this post I will show you how to overwrite sql server backup file rather than append (default action is append to backup media set) If you try below t-sql command to take full sql server database backup then you

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Posted in DBA, SQL Server, T-SQL Tips

SQL Server parent child query example using recursive CTE (Common Table Expression)

How to get parent child relationship using recursive CTE query

Many times we have to write recursive parent child query (Multiple levels of Parent-Child Links)  in SQL Server. There are multiple approaches to achieve this Using Hierarchy ID builtin CLR datatype in SQL Server 2008 or higher (not ion sql server

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Posted in SQL Server, T-SQL Tips

SQL Date format using T-SQL CONVERT function (More than 40 formats)

T SQL Date format convert function

 How many time you had to t sql date format date specific way such as yyyymmdd ??   Many people don’t know hidden feature of builtin T-SQL CONVERT function . This function can not only convert data types but also change format of  dates/numbers.

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Posted in SQL Server, T-SQL Tips

How to Script user permissions for SQL Server 2000/2005/2008 for all or single user

T SQL Date format convert function

Recently I had to work on database migration project from SQL 2000 to SQL 2008 and one of the challenges you face is scripting correct permissions to new database. There is no way to script user permissions in right way

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Posted in SQL Server, T-SQL Tips

Northwind Database Creation Script for SQL Server and Oracle

T SQL Date format convert function

Northwind is my favorite database for trying out sample T-SQL scripts because of its simplicity. Here is the full script you can just copy/paste and run in SSMS (for sql server) or SQL Developer (for oracle) to create Northwind database

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Posted in SQL Server, T-SQL Tips

How to exclude duplicate records

T SQL Date format convert function

Here is simple query which shows simple technique to exclude duplicate records from output. In my example I am selecting only first record from duplicate list based on Primary key. Select * into #tmp1 From( select 1 as id,'aaa' as

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Posted in SQL Server, T-SQL Tips

How to perform string html encode in t-sql

T SQL Date format convert function

If you ever store HTML or XML text in SQL Table ? Then in many scenarios you need to encode string before storing to database so when you display that text in browser it shows up correctly. Here is small

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Posted in SQL Server, T-SQL Tips

How to update large number of records in batch

T SQL Date format convert function

If you ever try to update several millions of record in single Update statement then think several times because it can cause real pain. Disadvantage of single Update statement is … Its considered as single transaction and it doesn’t commit

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Posted in SQL Server, T-SQL Tips