Mybatis on duplicate key update 回填主键id 错位
Web数据库默认是1的情况下,就会发生上面的那种现象,每次使用insert into .. on duplicate key update 的时候都会把简单自增id增加,不管是发生了insert还是update. 由于该代码数据量大,同时需要更新和添加的数据量多,不能使用将0模式,只能将数据库代码拆分成为更新和插入2个 ... WebSep 5, 2024 · 在mybatis中使用(在update标签下),会更新ON DUPLICATE KEY UPDATE关键字后面的字段值. 如果数据存在的话就会触发条件 ON DUPLICATE KEY UPDATE ,从而 …
Mybatis on duplicate key update 回填主键id 错位
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WebNov 9, 2024 · It was working as expected, inserting the list in a foreach loop and on duplicate, it was updating the rows. After updating to version 3.4.5, following exception is thrown: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named … WebON DUPLICATE KEY UPDATE statements just shown can be done as shown here: INSERT INTO t1 SET a=1,b=2,c=3 AS new ON DUPLICATE KEY UPDATE c = new.a+new.b; INSERT INTO t1 SET a=1,b=2,c=3 AS new (m,n,p) ON DUPLICATE KEY UPDATE c = m+n; The row alias must not be the same as the name of the table. If column aliases are not used, or if …
WebApr 14, 2024 · 简介: Mybatis:通过on duplicate key update实现批量插入或更新. 目录. 批量的saveOrupdate: 单条的saveOrupdate: 1.根据selectkey判断查询的count值是否为1,然后再进行新增或更新. 2.根据相应的唯一主键来判断是否新增或更新 [对事务支持较好] ON DUPLICATE KEY UPDATE 附带更新条件. 1 ... WebJan 18, 2013 · While INSERT INTO tbl(id, a) VALUES(1,2) ON DUPLICATE KEY UPDATE a=a will set a = 10 – Bùi Việt Thành. Jul 23, 2015 at 10:07. 10. Why all the upvotes? This DOES NOT WORK. As @Bùi Việt Thành pointed out, using a=a updates nothing. (The queries in the original question don't actually update anything either, but an update seems to be ...
WebNov 10, 2015 · this select will return over 70 rows but a lot of them are totally duplicated. If I use resultType="hashmap" or resultType="Message" it will returns all rows. WebNov 9, 2024 · It was working as expected, inserting the list in a foreach loop and on duplicate, it was updating the rows. After updating to version 3.4.5, following exception is …
Web如果这条数据在表中存在,说明这个字段之前已经有值了,你在 on duplicate key update 去更新其他字段,则应该可以成功,但mysql 在执行时首先执行的时insert 语句,因此报 …
WebApr 15, 2024 · Cause: java.util.NoSuchElementException at org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator.processBatch(Jdbc3KeyGenerator.java:81) … flights from sea to abqWebFeb 19, 2024 · How to retrieve id from mybatis insert on duplicate key update. Ask Question Asked 4 years, 1 month ago. Modified 4 years, 1 month ago. Viewed 925 times 0 I am using mybatis to insert records. I used on duplicate key update, while inserting i am able to retrieve dataId but while update mybatis does not retrieve dataId. my mybatis code … cherry bush hedgeWeb四、on duplicate key update MYSQL中的ON DUPLICATE KEY UPDATE,是基于主键(PRIMARY KEY)或唯一索引(UNIQUE INDEX)使用的。 如果已存在该唯一标示或主键 … cherry business card holdercherry bush porthos reviewsWebNov 21, 2024 · on duplicate key update需要有在INSERT语句中有存在主键或者唯一索引的列,并且对应的数据已经在表中才会执行更新操作。 而且如果要更新的字段是 主键或者唯 … cherry bushWebDec 23, 2024 · Syntax : INSERT INTO table (column_names) VALUES (values) ON DUPLICATE KEY UPDATE col1 = val1, col2 = val2 ; Along with the INSERT statement, ON DUPLICATE KEY UPDATE statement defines a list of … cherry bush shrubWebNov 9, 2024 · Mybatis-3: ON DUPLICATE KEY UPDATE selama batch insert rusak setelah pembaruan dari 3.4.4 ke 3.4.5 Dibuat pada 9 Nov 2024 · 4 Komentar · Sumber: … cherry butcher