Why did the same text turn out to be different when checking?

Question

SQL

Two identical values ​​are taken from two SQL databases. Take a look at the formula above. There are no gaps anywhere. How is this even possible? Maybe different encodings?

Answer 1

Look at the code for each character.
Or programmatically compare strings character by character.

Answer 2

ABEKMNORSTHaeopcyx
ABEKMHOPCTXaeopcyx
See the difference between the lines? And there are no matching letters, the top line is Cyrillic, the bottom line is Latin.

Answer 3

For an example and understanding, you can look at how the fuzzy search for endings works for me: it always tries to bring letters to the same layout.
Here .
Trite: md5() - check the hash sum of strings.

Answer 4

It also happens that one of the lines has a space at the end, while the other does not have a space. It's hard to see visually.