There is a table Saleswith data from year 2005 to year 2015 I want to query data and filter column Sales_Date with datetime data type where the year is 2013 including all other columns is this correct or there is a function specifically to filter query by year of datetime data type Answer It is not correct as it includes
Tag: database
Creating tables with multiple authors, books and categories
I am currently learning database for an upcoming school semester, So I’m practicing with the books I currently have. I have books by multiple authors and authors with multiple books. Also books with …
How can i merge two columns of a table in sql as a sentence?
i am a beginner in database programming. I am doing my homework, and i get a task about sql queries. My task is to merge 3 columns(first name, last name, sex) of a table(person) in a sentence. for …
Best practices when storing multimedia posts SQL DB
I have searched StackOverflow for an answer to this question, and I’ve been surprised to find very little information for what seems to be a very common task Let’s say I have an app that allows users …
Is there a way to import all databases into one database with Mysqldump?
I want to gather automatically all my databases into one with Mysqldump, is there a way to do it ? For example what I want is to move all the tables from DB1, DB2 and DB3 into DB4 (DB4 can already …
PostgreSQL DROP VIEW IF EXISTS
In PostgreSQL when I run the command DROP VIEW IF EXISTS view_name; I get the response: View IF dropped. Can anyone explain what this means? why the word ‘IF’ instead of a response like: View …
How to make a Query in MS-Access that returns the intersection of three other queries?
I have a “search” form that allows the user to input location, date, or ID. This form generates three queries, which return appropriate results, or all records if no search term was input for that …
Counting the number of words in a Column in Oracle SQL
How do you group this data, based on Patterns? Is it possible in SQL? CREATE TABLE ABC (“NAMES” VARCHAR2(50 BYTE)) ` `INSERT INTO ABC (names) VALUES (‘CA Apple 3’); INSERT INTO ABC (names) VALUES (…
How do I keep my “validity” row always updated in relation to my “expiration date” row?
This is my database’s survey table: I learned to use CURDATE() and DATEADD(), so the table can now automatically calculate the survey_date and its expiration_date. But I’d also like to add a value …
How can I not send Null to database while using Update
If i need to just update one column do i have to give other column previous value or i can just give give the column i need to change and not null values to update in database .. here is procedure …