Somebody ran into the following error message trying to query the
innodb_sys_foreign_cols tables from the
Somebody wanted to know how to find any non-unique indexes in MySQL. The query takes a session variable with the table name and returns the non-unique indexes by column names. It uses a correlated subquery to exclude the table constraints.
You set the session variable like this:
A recent question on the Oracle-L mailing list was about generating dates in a given period. If you had a string like 'MWF', all Mondays, Wednesdays and Fridays between the from- and to-dates should be generated.That reminded me of a quiz on plsqlchallenge.com I did on using DBMS_SCHEDULER.EVALUATE_CALENDAR_STRING. I had created a table function to test calendar expressions - that might be useful for something similar to what was asked on the mailing list.
It's Christmas time... It's a time for giving... It's a time for warm-hearted feelings...But there are people battling for their lives against cancer, who may not have much energy left to enjoy the holidays. Almost everybody has family or friends whose life has been impacted by cancer. Let us all reach out however we can, help wherever we can, and let good thoughts go out to the victims.
For most of this year, we have offered two weekly, competitive quizzes on PL/SQL:
PL/SQL Challenge & PL/SQL Explore
But it doesn't really make sense to offer two different championships. At least, that's how I, the fellow who would write all those quizzes, feels about it.
There is, as one might expect, lots of overlap between the top 50 ranked players in the two quizzes: only 14 in PL/SQL Explore are not in PL/SQL Challenge's top 50.
It seems to me that it makes much more sense to have a single championship for PL/SQL, overall.
I’m on my way to UKOUG Tech14, where I will present Database 12c MATCH_RECOGNIZE: Beating the Best Pre-12c Solutions on Tuesday at 3 P.M., room 4B. With all the Oaktable ACE Directors presenting at the same time, I don’t expect a big crowd but I’ll do my best for those who do turn up. This is my […]
So we've had taxis for years and we know that generally taxi drivers work hard, long hours and make small amounts of money. The cab companies make more, of course, but I don't think there are a whole lot of billionaires in the taxi business.