概述: Release notes missing information about change in duplicate pk behavior in 2.1→ Migration that switches a model to a UUID primary key fails with "duplicate column name: id" 组件: Documentation→ Migrations I'm attaching a minimal application that reproduces the problem (with PostgreSQL)...
@Attribute(.unique) let id: UUID let name: String? @Relationship(deleteRule: .cascade) var positions: [DeskPosition] = [] init(id: UUID, name: String?) { self.id = id self.name = name } } @Model final class DeskPosition { let id: UUID var title: String private var heightInCm: ...
根据hibernate手册的描述,increment是由hibernate来完成自增长的, increment主键生成器的org.hibernate.id.IncrementGenerator是使用select max( columnName ) from tableName的方式来获取,做应用负载出现问题是必然的。 所以应该杜绝increment的使用。 主键建议使用UUID的方式生成。
Stringschema()default"";// 表里用来保存主键名字的字段StringpkColumnName()default"";// 表里用来保存主键值的字段StringvalueColumnName()default"";// 表里名字字段对应的值StringpkColumnValue()default"";intinitialValue()default0;// //自动增长,设置为1intallocationSize()default50; UniqueConstraint[] uniq...
(uuid)); 11-19 23:45:16 ERROR metabase.db :: [ERROR] Table "QUERY_QUERYEXECUTION" already exists; SQL statement: CREATE TABLE PUBLIC.query_queryexecution (id INT AUTO_INCREMENT NOT NULL, uuid VARCHAR(254) NOT NULL, version INT NOT NULL, json_query CLOB NOT NULL, raw_query CLOB NOT ...
BigFix Inventory (v10.0.7) is showing that a Hyper-V VM Manager is reporting a VM with a duplicate UUID. I’ve modified the guests UUID and now running “Get-CimInstance -ClassName Win32_ComputerSystemProduct | Select UUID” shows a new (unique) UUID. I’ve re-ran the Initiate Softwar...
CREATE TABLE your_table ( id INT AUTO_INCREMENT PRIMARY KEY, other_column VARCHAR(255) ); 方法三:使用UUID作为主键 对于需要全局唯一性的场景,可以使用UUID(通用唯一识别码)作为主键。UUID是一个128位的值,可以在分布式系统中保证唯一性。 java import java.util.UUID; // 生成UUID作为主键 String primary...
{"name":"ts","transform":"identity","source-id":3,"field-id":1000}]}', 'dlc.ao.data.govern.sorted.keys'='id', 'smart-optimizer.inherit'='default', 'snapshot-count'='3', 'table_type'='ICEBERG', 'uuid'='b4be3ec8-de16-4107-a11c-a8e69d1feec3', 'write.distribution-mode'=...
self._validate_unique_container_name(context, values['name']) container = models.Container() container.update(values)try: container.save()exceptdb_exc.DBDuplicateEntry:raiseexception.ContainerAlreadyExists(field='UUID', value=values['uuid'])returncontainer ...
}catch(AmazonClientException e) {throwconvertDynamoDBException(e,"create",() ->newDuplicateKeyException("uuid "+ getId(domain) +" already exists", e));}returnconvertItemToDomain(itemCreated, domainClass); } From source file:org.springframework.orm.hibernate3.SessionFactoryUtils.java ...