sql Archives - Page 27 of 45

I’m adding a new, “NOT NULL” column to my Postgresql database using the following query (sanitized for the Internet): ALTER TABLE mytable ADD ...

This question already has answers here: How can I remove duplicate rows? (41 answers) Closed 2 years ago. I have a table with ...

What is the difference between JOIN and UNION? Can I have an example? 14 Answers 14

Is there any way in which I can clean a database in SQl Server 2005 by dropping all the tables and deleting stored ...

I think the above isolation levels are so alike. Could someone please describe with some nice examples what the main difference is ? ...

Is there any Boolean type in Oracle databases, similar to the BIT datatype in Ms SQL Server? 11 Answers 11

I have a table with this layout: CREATE TABLE Favorites ( FavoriteId uuid NOT NULL PRIMARY KEY, UserId uuid NOT NULL, RecipeId uuid ...

I have read the stuff on MS pivot tables and I am still having problems getting this correct. I have a temp table ...

What are the differences between the SET and SELECT statements when assigning variables in T-SQL? 4 Answers 4