Review on Overview of Oracle Operators
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 4
Abstract
SQL set operators allows combine results from two or more SELECT statements. At first sight this looks similar to SQL joins although there is big difference. SQL joins tends to combine columns i.e. with each additionally joined table it is possible to select more and more columns. You can combine multiple queries using the set operators UNION, UNION ALL, INTERSECT, and MINUS. All set operators have equal precedence. If a SQL statement contains multiple set operators, Oracle evaluates them from the left to right if no parentheses explicitly specify another order.
Authors and Affiliations
Husandeep Kaur, Jasmeet Kaur, Deepak Mittal, Ramandeep Kaur
Keywords
Related Articles
- EP ID EP23936
- DOI http://doi.org/10.22214/ijraset.2017.4230
- Views 262
- Downloads 10
Analysing the Train Accident Injuries using Mining Techniques
Rail accidents describe a significant safety concern for the transportation industry in multiple countries. To better understand the contributors to these extreme accidents, the Federal Railroad Administration has estab...
A Review on the Use and Application of Polymer Composites in Automotive Industries
Early the use of composite materials in a large-scale commercial application started during the World War II that is in late 1940s and early 1950s with marine applications for the military; but today, composite products...
QRS Detection and Data Compression Based On Adaptive Algorithm in a Wireless Wearable Sensor
The paper presents the QRS detection and data compression based on LMS algorithm in a wireless wearable sensor. The proposed method achieves a high sensitivity of 99.64% and positive prediction of 99.81% ECG database. T...
slugIssues and Challenges of Error Recovery Techniques for Mobile Distributed Systems
The emergence of mobility in a distributed system, has led to the start of new era of computing. Recent technological advances in mobile or hand - held devices and wireless technology ha...
An Analysis on Leadership Behaviors, Organizational Culture and Knowledge Management Practices: An Empirical Investigation on Sme’s, A.P India
leaders are like drivers for any organization in order to run organization successfully. Leadership is the best quality, it have great impact on employee’s productivity and their satisfaction. The present study helps to...