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Null (SQL)

Known as: Sql case, NULLIF, C-table 
Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the… 
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Related topics

Related topics

50 relations
ACM Transactions on Database SystemsAggregate functionB-treeCheck constraint

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
Highly Cited
2008
Highly Cited
2008
Wear progression of carbide tool in low-speed end milling of stainless steel
Highly Cited
2007
Highly Cited
2007
API Quality by Design Example from the Torcetrapib Manufacturing Process
The concept and application of quality by design (QbD) principles has been and will undoubtedly continue to be an evolving topic… 
Highly Cited
2006
Highly Cited
2006
Population and Diversity: Policy Implications of Emerging Indigenous Demographic Trends
There is a compelling need for fresh perspective on the policy implications of Indigenous demographic trends. Current frameworks… 
2004
2004
DNA-Binding Protein Nanotubes: Learning from Nature's Nanotech Examples
Bacterial pili are nanofibers made of protein subunits. Here we report the controlled assembly of protein nanotubes from an… 
Highly Cited
2001
Highly Cited
2001
To appear in ApJ Letters Preprint typeset using L ATEX style emulateapj v. 14/09/00 THE OPTICALLY-POWERFUL QUASAR E1821+643 IS ASSOCIATED WITH A 300-KPC SCALE FR I RADIO STRUCTURE
  • 2001
  • Corpus ID: 16190255
Highly Cited
1999
Highly Cited
1999
Multipulse operation of a Ti:sapphire laser mode locked by an ion-implanted semiconductor saturable-absorber mirror
We show results obtained from a semiconductor saturable-absorber mirror mode-locked Ti:sapphire soliton laser that was operated… 
Highly Cited
1999
Highly Cited
1999
Chemical Effects of Methyl and Methyl Ester Groups on the Nucleation and Growth of Vapor-Deposited Aluminum Films
The interaction of vapor-deposited Al atoms with self-assembled monolayers (SAMs) of HS(CH2)15- CH3 and HS(CH2)15CO2CH3… 
Highly Cited
1992
Highly Cited
1992
The extraction by soil and absorption by plants of applied zinc and cadmium
In five consecutive years lettuce, spinach, spring wheat, endive and maize were grown in pots and the effects of ‘native’ and… 
Highly Cited
1992
Highly Cited
1992
Exaggerated Texture and Grain Growth in a Supperplastic SiAlON
This paper reports on a fine-grained superplastic [beta]-silicon nitride solid solution (SiAlON) which was found to develop… 
Highly Cited
1979
Highly Cited
1979
Hydrolysis of protein in vacuoles isolated from higher plant tissue
THE vacuoles of higher plant cells are known to be sites of deposition of salts and metabolites. A role as the lytic compartment… 
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