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Samebug tips

  1. ,

    Check whether privilege has the "not null" restriction. If so it always has to have a value and can never be null.

    A different reason could be a wrong implementation of a foreign key. Check whether you always correctly insert/update in both tables.

  2. ,

    Nothing is wrong with the database. When it gives you those errors, it's telling you that you are trying to input "nothing" (null) into a column that doesn't allow it. Fix it by removing the not null constraint or by passing a value to that field.

Solutions on the web

via GitHub by ProgrammerDan
, 1 year ago
Duplicate entry '23068d2b-9421-44a4-8db5-745ff921bad9-1' for key 'PRIMARY'
via Stack Overflow by Mykhailo Seniutovych
, 1 year ago
Cannot add or update a child row: a foreign key constraint fails (`grades_book_db`.`grades`, CONSTRAINT `FK_Grades_Subject` FOREIGN KEY (`Subject_Id`) REFERENCES `subjects` (`Subject_Id`))
via Stack Overflow by Milos Vulic
, 3 months ago
Cannot add or update a child row: a foreign key constraint fails (`projekatbaze`.`pesmica`, CONSTRAINT `pesmica_ibfk_1` FOREIGN KEY (`id_album`) REFERENCES `album` (`id_album`) ON DELETE CASCADE ON UPDATE NO ACTION)
via Stack Overflow by Romil Jain
, 1 year ago
Duplicate entry 'owner1:warehouseid1:skuid98238:08-11-2016' for key 'PRIMARY'
via cayenne-user by Andrew Willerding, 2 years ago
Duplicate entry '2-9999-1922-1' for key 'U_ProjectContact'
com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '23068d2b-9421-44a4-8db5-745ff921bad9-1'
for key 'PRIMARY'	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)	at com.mysql.jdbc.Util.getInstance(Util.java:387)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:934)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3870)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3806)	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2470)	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2617)	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2550)	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)	at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2073)	at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2009)	at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5094)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1994)	at vg.civcraft.mc.bettershards.database.DatabaseManager.getPlayerLock(DatabaseManager.java:373)	at vg.civcraft.mc.bettershards.database.DatabaseManager.savePlayerData(DatabaseManager.java:435)	at vg.civcraft.mc.bettershards.misc.CustomWorldNBTStorage.save(CustomWorldNBTStorage.java:54)	at net.minecraft.server.v1_10_R1.PlayerList.savePlayerFile(PlayerList.java:315)	at net.minecraft.server.v1_10_R1.PlayerList.disconnect(PlayerList.java:389)	at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:1058)	at net.minecraft.server.v1_10_R1.NetworkManager.handleDisconnection(NetworkManager.java:318)	at net.minecraft.server.v1_10_R1.ServerConnection.c(ServerConnection.java:174)	at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:832)	at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:399)	at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:672)	at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:571)	at java.lang.Thread.run(Thread.java:745)