They said select star was bad but

Gordon Beeming

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They said Select * was bad but...

http://r3f.co/1JWf5XM

Setup• Database• Table• View• Some Data

Add a column C

A little while later…

Check our data

Start fresh• Drop/Create the table• Add the extra column• Drop/Create the view• Populate with some data

It works!

But how?

Break it again• Drop/Create the table• Drop/Create the view• Add the extra column• Populate with some data

Alter view

Rewind a bit

Compare Information Schema

Rename a column

Check results and Information Schema

Check sys.views and sys.columns

Refresh view and recheck metadata tables

Drop column, Add column

Check metadata tables again

Refresh view and select again

Get new data

Drop column, Add Column, Rename Column

Check the metadata tables

Refresh view

Drop Column Only

Moment of truth

Refresh for the last time

Our last cleanup

What if I didn’t use Select *?

Add column

Alter view

SQL would do what I expect it to do

Fix it

Gordon Beeming

twiiter.com/GordonBeeming

facebook.com/BinaryDigit.0110

za.linkedin.com/in/b1n4ryd1g1tbinary-stuff.com

gordon-beeming

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