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java.sql.SQLSyntaxErrorException: incompatible data types in combination	at org.hsqldb.error.Error.error(Unknown Source)	at org.hsqldb.error.Error.error(Unknown Source)	at org.hsqldb.types.CharacterType.getAggregateType(Unknown Source)	at org.hsqldb.types.NumberType.getAggregateType(Unknown Source)	at org.hsqldb.types.Type.getAggregateType(Unknown Source)	at org.hsqldb.ExpressionOp.resolveTypesForCaseWhen(Unknown Source)	at org.hsqldb.ExpressionOp.resolveTypes(Unknown Source)	at org.hsqldb.ParserDML.resolveUpdateExpressions(Unknown Source)	at org.hsqldb.ParserDML.compileUpdateStatement(Unknown Source)	at org.hsqldb.ParserCommand.compilePart(Unknown Source)	at org.hsqldb.ParserCommand.compileStatement(Unknown Source)	at org.hsqldb.Session.compileStatement(Unknown Source)	at org.hsqldb.StatementManager.compile(Unknown Source)	at org.hsqldb.Session.execute(Unknown Source)	at org.hsqldb.jdbc.JDBCPreparedStatement.(Unknown Source)	at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source)