devxlogo

Writing a Query Showing ID Status

Writing a Query Showing ID Status

Question:
I am a SQL beginner and I am trying to write this query. I have a table with four columns:

ID  STATUS  DESCRIPTION  CURRDATE1   open    Test1        6/1/001   open    Test1        6/2/001   close   Test1        6/3/002   open    Test2        6/2/002   open    Test2        6/4/003   open    Test3        6/4/00

I would like to show only the ID when status = ‘open’; once status = ‘close’ I do not want to show the ID.

Answer:
Given the data in your test table, you can write a subquery that first extracts the closed items and then does a query of open items, like this:

SELECT * FROM TestTableWHERE ID NOT IN  (SELECT ID    FROM Testtable   WHERE Status = 'close')

The query returns this resultset from the given data (notice that no records for ID 1 are in the resultset because the ID has a record with a status of ‘close’):

ID Status Description CurrDate                    -- ------ ----------- -----------------------2  open   Test2       2000-06-02 00:00:00.0002  open   Test2       2000-06-04 00:00:00.0003  open   Test3       2000-06-04 00:00:00.000

See also  Redefining Energy Management: Advanced Solutions for Modern Buildings
devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist