SQL Primary Key - Learn about the SQL Primary Key, its importance in database design, and how to implement it effectively in your SQL queries.
java.sql.SQLException: Duplicate entry'1300'forkey 'PRIMARY'at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.readErrorPacket(AbstractQueryProtocol.java:1681) ~[mariadb-java-client-2.7.2.jar!/:na] at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.readPacket(AbstractQueryProtocol.ja...
AI代码解释 mysql>create tablet(id int,v int)engine=innodb;QueryOK,0rowsaffected(0.00sec)mysql>insert into tvalues
解决方法:可以通过HoloWeb Query洞察排查是否有冲突的DDL,详情请参见Query洞察。后期尽量避免Query执行过程中有DDL冲突任务。 报错:query is cancelled Cannot find index full ID:xxx (table id: x, index id: x) in storages or it is deleting 问题原因:Query执行过程中,涉及到的表存在TRUNCATE或DROP等行为,...
Server: Msg 2601, Level 14, State 1, Line 1 Cannot insert duplicate key row in object 'UnitMeasure' with unique index 'AK_UnitMeasure_Name'. The statement has been terminated. F. 使用 IGNORE_DUP_KEY 选项 以下示例首先在该选项设置为 IGNORE_DUP_KEY 时在临时表中插入多行,然后在该选项设置...
构建Shell任务调用DataX进行MaxCompute源读取到MySQL写入的数据同步,执行报错提示有脏数据,报错信息为“java.sql.BatchUpdateException: Duplicate entry '...' for key 'PRIMARY'”。 问题原因 根据报错判断,MySQL写入数据,若出现主键冲突,当writeMode为insert时会提示有脏数据。
IGNORE_DUP_KEY = { ON | OFF } Specifies the error response when an insert operation attempts to insert duplicate key values into a unique index. The IGNORE_DUP_KEY option applies only to insert operations after the index is created or rebuilt. The default is OFF. ON A warning message occ...
Can I find out the "Listener" name through a SQL Server Query Can i give a rollup an Alias? Can I have a conditional JOIN? Can I have a primary key as a non-unique column Can I pass parameter to an ALTER DATABASE command Can I prevent deadlock during concurrent delete Can I print...
Post-execution of the above query at MySQL workbench. The following screen will appear. 在MySQL工作台上执行以上查询。 将出现以下屏幕。 On performing a table inspection following screen will appear. 进行桌子检查时,将出现以下屏幕。 Primary Key Column ...
2、find_in_set 用法: 有两张表: a: id name 1 tom 2 terry ... b: fid ids 1 1,2 ... 如果需要根据表b的ids列找出表a对应的name: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 select name from a wherefind_in_set(id,(select ids from b where fid=1)) ...