tag:blogger.com,1999:blog-694855878384792308.post4445073185945097655..comments2024-03-21T06:26:49.387-07:00Comments on Java67: Difference between UNION vs UNION ALL in SQL? Examplejavin paulhttp://www.blogger.com/profile/15028902221295732276noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-694855878384792308.post-64220191539971589312016-04-27T01:25:31.368-07:002016-04-27T01:25:31.368-07:00UNION removes duplicate records (where all columns...UNION removes duplicate records (where all columns in the results are the same), UNION ALL does not.UNION and UNION ALL should work on all <a href="https://www.youtube.com/watch?v=7Vtl2WggqOg" rel="nofollow">SQL Servers</a>.<br />Karthika Qpthttps://www.blogger.com/profile/00583318022789356382noreply@blogger.comtag:blogger.com,1999:blog-694855878384792308.post-24885451823701872612014-12-02T23:21:54.184-08:002014-12-02T23:21:54.184-08:00I am going to explain a use of union operator in S...I am going to explain a use of union operator in SQL Server Database with a real life scenario and example.<br /><br />The UNION operator is used to combine the result-set of two or more SELECT statements.<br /><br />Notice that each SELECT statement with the UNOIN must have the same number of columns. The columns must also have similar data types. Also, the columns in each SELECT statement must be in the same order.<br /><br />Before moving towards union query, let understand what is our scenario. Suppose we have three tables (Product, Customer and Order) in our database and we want to see the number of orders by month name, week days and between three hours gaps in day.<br />for full implementation to refer here: http://www.mindstick.com/Articles/adeb48fa-85cc-4671-8b2e-86adfb34406d/Union%20Example%20in%20SQL%20ServerAnonymoushttps://www.blogger.com/profile/13699948033732239893noreply@blogger.com