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  1. ,
    Expert tip

    MySQL doesn't support some types of characters (such as emojis) with the utf8 encoding. You need to be on MySQL 5.5+ and force utf8mb4 (everywhere, client and server). You can do this sending the query "SET NAMES utf8mb4". Check this https://goo.gl/3E2qzg

  2. ,

    Make sure you are using InnoDB storage engine and READ-COMMITTED transaction isolation level and increase the database server innodb_lock_wait_timeout variable to about 500.

Solutions on the web

via Stack Overflow by p3ace
, 9 months ago
via Stack Overflow by aminos
, 2 years ago
'NaN' is not a valid numeric or approximate numeric value
via Stack Overflow by sorin penteleiciuc
, 1 year ago
The connection property 'failOverReadOnly' only accepts values of the form: 'true', 'false', 'yes' or 'no'. The value 'false,address=(type=master)(protocol=tcp)(host=localhost)(port=3306)(user=test)(password=test)/dbname2?failOverReadOnly=false' is n
via oodlestechnologies.com by Unknown author, 2 years ago
Value '0000-00-00 00:00:00' can not be represented as java.sql.Timestamp
Empty query.