I don't just like trees. I am in awe of trees. Sometimes, I must confess, I do walk up to a tree to trace the texture of its bark with my fingers, or just lean up against the big trunk, feel its strength, and age, look up to follow the wonderful twisting branches up into the sky.
And now, October, of course, it is time to have one's breath taken away by the changing leaf colors, as in:
We started the PL/SQL Challenge in April 2010 with a daily PL/SQL quiz. Over the years since, we have added weekly APEX, SQL and Logic quizzes, as well as monthly quizzes, quarterly championships and much, much more: over 1,200 to date!
Through it all we published five new quizzes on PL/SQL each week, come rain or shine, holiday or workday. And it should come as no big surprise, given that this whole site was my idea (Steven Feuerstein), that I have written more quizzes than everyone else combined: over 1,000. Wow.
And I realize she is pointing at a filling, a blob of shiny metal in my mouth (actually, whole lots of them. I am a good flosser and fine brusher, but I am also an awesome eater. I have had many cavities in my life).
alter table to_make_cols_vanish_instantly
set unused (the_cols_you_want_to_drop);
Dropping columns from large tables can be a time consuming process. Setting
columns unused is a very handy way to "drop" columns in your miniscule
I don't just write books about PL/SQL. I also write children's books (much, much harder!). In fact, back in 1991, I wrote my all-time favorite: Vivian Vulture. My incredibly talented wife, Veva Silva, did some fantastic illustrations for it and we plan to publish it soon via Amazon's Createspace.