I do not believe that so many people think same.
I wasted half a day for a shitty-working-dirty solution, was so happy, and saw THAT.

Rough world

Thanks

Read this: https://www.prisma.io/dataguide/postgresql/short-guides/quoting-rules#:~:text=In%20PostgreSQL%2C%20double%20quotes%20(like,specifically%20marked%20beginning%20and%20end.

In SQLite 3.2.8 you could use one or the other.

Why it doesn't accept double quotes?

That's insane!

Thanks for you reply, it's an honour. I hope I can learn a lot from pros like you.

You're writing programs about things. If the things you're writing the program about are mathematical, then you'll obviously need to know enough math to understand what your program needs to do. There are other problems that require very little math. For example, a web site that allows a user to browse a catalog might use some math in the layout code, or to track items in a shopping cart, but that's a very low ratio of math needed per basic unit of functionality in the code. Then, there are a whole class of problems that don't seem like they'd require a lot of math, but turn out to be very heavily mathematical. For example, computer graphics, AI, and sound processing are all very heavily mathematical, even if it doesn't seem like they would be.

And where is said math is not needed for programmer???
I am so frustrated now

third time forgot about this way of splitting.
well, God loves a Trinity

Crap. forgot, again.

That is the worst way to solve. That how the bugs born!