插入UUID，出現Data truncation: Data too long for column 'id' at row 1

ssc.udf.register("getuuid", () => UUID.randomUUID().toString)
val stuPCountDF_tmp1=ssc.sql("select * from stuPCountDF_tmp1 where stuId!='null' order by stuId").distinct()
  .selectExpr("getuuid() as id","" ,....)

val dbInfo = XMLUtil.getDBProperties()
val dbConn = dbInfo._1
val dbProp = dbInfo._2
val conn: Connection = XMLUtil.getConnection
val basePsy = conn.createStatement()
try {
  basePsy.executeUpdate(s"DELETE FROM edu_grade")
} finally {
  basePsy.close()
}
stuPCountDF_tmp1.repartition(200).write.mode(SaveMode.Append).jdbc(dbConn, "psychology", dbProp)

結果出現：
Data truncation: Data too long for column 'id' at row 1

Caused by: org.springframework.dao.DataIntegrityViolationException: Could not execute JDBC batch update; nested exception is org.hibernate.exception.DataException: Could not execute JDBC batch update
    at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:639)
    at 

Caused by: java.sql.BatchUpdateException: Data truncation: Data too long for column 'id' at row 1
    at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1269)
    at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:955)
    at 

查詢得知：

如題：錯誤並非由於字段過長而致使出錯的,

        1. 多是由於數據庫裏的表設置的字符集不相同。

        2. 也可能真是數據庫字段裏數據庫確實過長(我是遇到的這種狀況)。

例如：在同一個數據庫中，存在utf8的表，也存在gbk_chinese_ci的表。

解決辦法：alter table `cms_activity_test` convert to character set gbk collate gbk_chinese_ci;(單獨修改指定表的字符集)

補充：經過在網上查找資料，通常都是修改數據庫MySQL的默認字符集和修改單個數據庫的字符集

1。 在Mysql數據庫目錄下找到my.ini文件,而後Ctrl+F查找character-set,修改

[client]

port=3306

[mysql]

default-character-set=utf8

2. 修改單個數據庫字符集,data目錄下找到db.opt文件,而後修改

default-character-set=gbk
default-collation=gbk_chinese_ci

3. 用命令設置

mysql> SET character_set_client = utf8 ;
mysql> SET character_set_connection = utf8 ;
mysql> SET character_set_database = utf8 ;
mysql> SET character_set_results = utf8 ;
mysql> SET character_set_server = utf8 ;
mysql> SET collation_connection = utf8 ;
mysql> SET collation_database = utf8 ;
mysql> SET collation_server = utf8 ;

 4. 若是還嫌太麻煩了，就用一個蠢辦法，若是整個數據庫表很少且數據量不大的狀況下，就將整個庫導出，而後再去修改文件中字符集不一的表，最後再導入數據庫。。。

 

 

最後臺：經過修改id的字段的長度解決