Why doesn't UPDATE update the value of a field in a table?

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Gennady Akulov2017-04-06 18:09:34

MySQL

Gennady Akulov, 2017-04-06 18:09:34

Why doesn't UPDATE update the value of a field in a table?

There are 2 tables, A and B.
Table B contains several records corresponding to the id in table A.

WHY not 2?! Please help, I've been scratching my head all day. What could be wrong here?

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Max, 2017-04-06
@AkulovGen

sqlize.com/efw5yGKy28

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