Click here to monitor SSC
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 

Content with tag NULL Rss

   Items 1 to 20 of 26    Older >>
 

Database Design Follies: NULL vs. NOT NULL

It sounds simple enough. Either your column will always have a value or it may not. Yet somehow such a seemingly simple decision can become a never-ending debate where database schema begins to resemble superstition and designing effective tables seems more contentious than you expected it to be.  Read more...
By Edward Pollack 2016/02/26 (first published: 2014/10/30) | Source: SQLServerCentral.com | Category: null
Rating: |  Discuss |   Briefcase | 17,321 reads

Equality on Nullable Columns

By Mayank Shukla 2016/02/17 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 1,566 reads

How to Get NULLs Horribly Wrong in SQL Server

NULLs in SQL are a mixed blessing. The Three-Valued Logic of SQL has its uses but can cause difficulties to anyone who assumes that NULL has a 'value'. It can make reports go horribly wrong in a number of alarming ways, as Robert Sheldon explains.  Read more...
By Additional Articles 2015/07/14 | Source: SimpleTalk | Category: t-sql
Rating:  Rate this |   Briefcase | 8,558 reads

integer lengths (II)

By Tom Thomson 2015/07/06 | Category: t-sql
Rating: (not yet rated) |  Discuss |   Briefcase | 1,926 reads

CHECK Constraints vs NULL values

By Justin Clementz 2015/05/01 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 1,724 reads

Group By, Count, and NULLs

By Justin Clementz 2015/02/02 | Category: count
Rating: (not yet rated) |  Discuss |   Briefcase | 2,276 reads

Find Null values on every column

with this script you will be able to see if you have a null value on every column of your table  Read more...
By Leonardo Campos 2015/01/28 | Source: SQLServerCentral.com | Category: null
Rating: |  Discuss |   Briefcase | 1,962 reads

Database Design Follies: NULL vs. NOT NULL

It sounds simple enough. Either your column will always have a value or it may not. Yet somehow such a seemingly simple decision can become a never-ending debate where database schema begins to resemble superstition and designing effective tables seems more contentious than you expected it to be.  Read more...
By Edward Pollack 2016/02/26 (first published: 2014/10/30) | Source: SQLServerCentral.com | Category: null
Rating: |  Discuss |   Briefcase | 17,321 reads

What is (Null='Hello') in Sql Server

By Jaime PadrĂ³n 2014/03/27 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 2,316 reads

T-SQL counts

By Samith C 2013/10/02 | Category: t-sql
Rating: (not yet rated) |  Discuss |   Briefcase | 2,820 reads

BETWEEN a hard place and a rock

By Hugo Kornelis 2013/06/12 | Category: t-sql
Rating: (not yet rated) |  Discuss |   Briefcase | 2,730 reads

Usage of Null

By Bhavpreet Singh Narang 2013/06/05 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 2,399 reads

Data Type

By Yogesh Kumar 2013/05/10 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 2,213 reads

Basic of T-SQL

By Naseer Ahmad 2012/08/20 | Category: t-sql
Rating: (not yet rated) |  Discuss |   Briefcase | 3,479 reads

NULL

By Samith C 2012/08/15 | Category: t-sql
Rating: (not yet rated) |  Discuss |   Briefcase | 2,987 reads

NULLS

By Robin Sasson 2012/05/11 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 3,315 reads

Using bit columns with NULLs when three options exist in SQL Server

Frequently surveys ask yes/no questions and use a bit datatype. What are the effects of allowing this column to be NULL in a SQL Server table? Check out this tip to learn more.  Read more...
By Additional Articles 2012/01/05 | Source: MSSQLTips.com | Category: bit columns
Rating: (not yet rated)  Rate this |   Briefcase | 3,980 reads

Working with null values in SQL XML

We all know NULL values must be dealt with carefully in T-SQL, but how exactly do you best deal with them in SQL XML?  Read more...
By Richard Rozema 2010/10/26 | Source: SQLServerCentral.com | Category: null
Rating: |  Discuss |   Briefcase | 6,703 reads

Tables

By SQL Buzz 2010/06/17 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 3,913 reads

ANSI_NULLS

By Paul White 2010/04/07 | Category: null
Rating: (not yet rated) |  Discuss |   Briefcase | 4,015 reads
   Items 1 to 20 of 26    Older >>
 
Tags
t-sql (20)    
count (3)    
aggregates (2)    
database design (2)    
ansi_nulls (1)    
bit columns (1)    
blogs (1)    
cast and convert (1)    
check constraints (1)    
constraints (1)    
datatypes (1)    
except (1)    
group by (1)    
implicit conversion (1)    
isnull (1)    
not null (1)    
str (1)    
strings (1)    
xml (1)