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Transact-SQL (T-SQL)

Unique Constraint That Allow Multiple Nulls In SQL Server

Aug 18, 2018Jan 12, 2018 by Beaulin Twinkle
SQL Server unique constraint that allow multiple nulls

How to create an unique constraint that allow multiple nulls? Using filtered index you can create unique constraint with multiple nulls. Using this you can store any number for NULL in a unique constraint column

Categories SQL Server Tags SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Tips, Transact-SQL (T-SQL) 2 Comments

List All Foreign Keys Referencing A Table In SQL Server

Jul 31, 2019Jan 5, 2018 by Beaulin Twinkle
List Foreign Keys Referencing A Table

Quick methods to list all foreign keys referencing a table in SQL Server using execution of simple TSQL scripts and SSMS GUI. Ways to identify all the tables referencing a table with foreign key constraint

Categories SQL Server Tags SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Tips, Transact-SQL (T-SQL) 2 Comments

Inserting Line Break or Carriage Return or Tab To String In SQL Server

Aug 18, 2018Dec 21, 2017 by Beaulin Twinkle
Inserting line break or carriage return or tab to string

Adding or inserting Inserting Line Break or Carriage Return or Tab to a string in SQL Server. Quick examples for adding special characters like Line Break, Carriage Return and Tab to strings.

Categories SQL Server Tags SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Tips, Transact-SQL (T-SQL) Leave a comment

Pagination of Results in SQL Server In Efficient Way

Sep 13, 2018Dec 15, 2017 by Beaulin Twinkle
Pagination of results in SQL Server

How to do pagination of results in SQL Server In and efficient way? Best way to paginate results in SQL Server to improve performance of the application.

Categories SQL Server Tags SQL, SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Tips, Transact-SQL (T-SQL) Leave a comment

How to get Date from DateTime data type in SQL Server?

Aug 18, 2018Dec 11, 2017 by Beaulin Twinkle
Date From DateTime Datatype

How to get date part alone from DateTime and DateTime2 data types in SQL Server? Here are few of the techniques to get date from DateTime column.

Categories SQL Server Tags SQL, SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Tips, Transact-SQL (T-SQL) Leave a comment

Azure Data Studio: A Cross-Platform SQL Server Tool

Mar 14, 2019Nov 18, 2017 by Beaulin Twinkle
SQL Operations Studio

What is Azure Data Studio (SQL Operations Studio)? What are the salient features of SQL Ops Studio? Advantages and disadvantages of SQLOPS over SSMS.

Categories SQL Server Tags Azure SQL Database, DevOps, SQL, SQL Operations Studio (SQLOPS), SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, Transact-SQL (T-SQL) Leave a comment

DROP IF EXISTS Table Or Other Objects In SQL Server

Apr 11, 2019Nov 3, 2017 by Beaulin Twinkle
SQL Server DROP IF EXISTS 01

How to drop table if it exists in SQL Server? How to drop stored procedure if it exists? How to drop function if it exists? Using DROP IF EXISTS.

Categories SQL Server Tags SQL, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, Transact-SQL (T-SQL) 2 Comments

Concatenate Multiple Rows Using STRING_AGG

Aug 18, 2018Oct 27, 2017 by Beaulin Twinkle
SQL Server Using STRING_AGG

Concatenate multiple rows into single string in SQL Server using STRING_AGG. New function STRING_AGG in SQL Server 2017 to concatinate rows of data.

Categories SQL Server Tags SQL, SQL Server 2017, Transact-SQL (T-SQL) 5 Comments

Using TRANSLATE() in SQL Server

Aug 18, 2018Oct 19, 2017 by Beaulin Twinkle
SQL Server - Using TRANSLATE

TRANSLATE() is a string function introduced in SQL Server 2017. Using TRANSLATE is simple and straightforward compared to REPLACE function.

Categories SQL Server Tags SQL, SQL Server 2017, Transact-SQL (T-SQL) Leave a comment

Using CONCAT_WS() in SQL Server

Dec 19, 2019Oct 11, 2017 by Dahlia Sam
SQL Using CONCAT

CONCAT_WS() is a new function introduced in SQL Server 2017. Here is the details on using CONCAT_WS() to concatenating strings with separator.

Categories SQL Server Tags SQL, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, Transact-SQL (T-SQL) 2 Comments

Row Number Without Using Order By In SQL Server

Jan 7, 2019Oct 8, 2017 by Beaulin Twinkle
SQL Row Number Without Using Order By

How to generate row number without using ORDER By clause in SQL Server. Simple technique to override the sequence ordering while using ROW_NUMEBR() function

Categories SQL Server Tags SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

TRIM() Function To Remove Space In SQL Server

Aug 18, 2018Sep 27, 2017 by Dahlia Sam
Trim Function In SQL Server

TRIM() Function In SQL Server 2017 and equivalent custom made TRIM UDF in 2016 and older versions ti trim the spaces at the starting and ending of a string.

Categories SQL Server Tags SQL, SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, Transact-SQL (T-SQL) Leave a comment

Union vs Union All – Usage and Performance In SQL Server

Jul 31, 2019Sep 6, 2017 by Dahlia Sam
UNION vs UNION ALL in SQL Server

Difference between union and union all. Performance comparison of union vs union all and identifying the best one to use and the scenarios to use them.

Categories SQL Server Tags Performance, SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

Char Vs Varchar Data Types In SQL Server

Aug 18, 2018Aug 2, 2017 by Dahlia Sam
char vs varchar in sql server

Similarities, differences usage of char vs varchar. Differences and similarities between char and varchar data types In SQL Server.

Categories SQL Server Tags SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

Nchar Vs Char Data Types In SQL Server

Aug 18, 2018Jul 27, 2017 by Dahlia Sam
Nchar vs Char in SQL Server

Similarities, differences, advantages and disadvantages of nchar vs char. Differences and similarities between char and nchar data types In SQL Server.

Categories SQL Server Tags SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

Nvarchar Vs Varchar Data Types In SQL Server

Jul 31, 2019Jul 21, 2017 by Dahlia Sam
Nvarchar vs Varchar in SQL Server

Similarities, differences, advantages and disadvantages of nvarchar vs varchar. Differences and similarities between varchar and nvarchar data types In SQL Server.

Categories SQL Server Tags SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

Move Database To Emergency Mode In SQL Server

Aug 18, 2018Jun 14, 2017 by Dahlia Sam
SQL Move Database To Emergency Mode

How to move database to emergency mode in SQL Server. For repair and troubleshooting purpose you may need to set the status of database to emergency.

Categories SQL Server Tags Database, SQL, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

Detach And Attach Database In SQL Server

Jul 31, 2019Jun 8, 2017 by Dahlia Sam
SQL Detach And Attach Database 05

Simple method to detach and attach database in SQL Server. T-SQL method and SSMS method to detach an database and attach it back.

Categories SQL Server Tags Database, SQL, SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

Taking Database Offline In SQL Server

Jul 31, 2019Jun 2, 2017 by Dahlia Sam
Taking Database Offline in SQL Server 02

How to take an SQL Server database offline? Simple methods to bring a MSSQL database to offline state using transact-SQL or management studio.

Categories SQL Server Tags Database, SQL, SQL Server 2005, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, Transact-SQL (T-SQL) Leave a comment

How To Split Delimited Strings in SQL Server?

Jul 31, 2019May 31, 2017 by Beaulin Twinkle
SQL Server: Split Delimited Strings SP

Simple method to split delimited strings in newer and older versions of SQL Server. Using STRING_SPLIT() in SQL Server 2016 and higher and Few lines of code to create a function which splits the strings with delimiters on older versions.

Categories SQL Server Tags SQL, SQL Server 2008, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Tips, Transact-SQL (T-SQL) 6 Comments
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