SQL Homework – August 2017 – Create a table
5August 2, 2017 by Kenneth Fisher
If you didn’t see it last month I’ve started doing monthly SQL Homework. The first month was backups, this month it’s tables.
Here is your homework for August!
- Create a table with at least 3 columns.
- Add 5 rows to the table.
- Add one column to the table.
- Update the existing 5 rows to fill in the new column.
- Modify the new column to not allow NULLs.
- Run a query against the table, pulling the columns in reverse order.
Here is how the grading will go.
Note: If you can, and have done any/all of this recently then give yourself the points. This is about ability not necessarily doing it this time. Be sure you can do it before actually giving yourself the points though.
Note: Additional points are granted in some cases. If it says T-SQL that means you wrote the T-SQL yourself and didn’t use the GUI to generate the SQL.
- 25 pts – Create the table. (+10 for T-SQL)
- 10 pts – Add the rows to the table. (+5 if you can do it in a single command)
- 10 pts – Add the column. (+5 for T-SQL)
- 10 pts – Update the values of the new columns to not be null.
- 10 pts – Change the new column to not allow NULLs. (+5 for T-SQL)
- 10 pts – Run the query.
SQL Studies 
GUI? Gooey!
Ever since modifying a table using the GUI resulted in a truncated table (SQL Sv 2000) I use scripts.
Additional option: make the script idempotent. 🙂
The GUI is fine when you are starting out .. but as you discovered it is best if you learn to use T-SQL 🙂
Having a problem with with the last assigment, selecting rows with columns in reverse order. Is there a way to do this, without specifying the columns order yourself (like SELECT Column4, Column3, Column2, Column1)
Nope, if you want the columns in reverse order then you have to actually list the columns 🙂
[…] created tables before but how about constraints? Constraints allow a finer level of control over what data is […]