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Samebug tips

  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 user2696466
, 1 year ago
Field 'USERNAME' doesn't have a default value
via GitHub by iss-deweloper
, 1 year ago
Incorrect string value: '\xC4\x85tek' for column 'contentTitle' at row 1
via Stack Overflow by user1780366
, 2 years ago
via Stack Overflow by Lena Bru
, 2 years ago
Field 'userID' doesn't have a default value
via Stack Overflow by SWS3D
, 1 year ago
Field 'note_paragraph_id' doesn't have a default value
via GitHub by octachrome
, 1 year ago
Incorrect string value: '\xF0\x9F\x91\x8C' for column 'name' at row 1
java.sql.SQLException: Field 'USERNAME' doesn't have a default value	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3835)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3771)	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2435)	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582)	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2535)	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1911)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2145)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2081)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2066)	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)