op.execute(sa.text("DROP FUNCTION foo.refresh_updated_at() CASCADE")) Run Code Online (Sandbox Code Playgroud) 所以我们得出的结论是 onupdate= 不适用于 Posgresql,唯一的解决方案是创建一个触发器?(2认同)
在这种情况下,你可以尝试将ON DELETE CASCADE更改为ON DELETE RESTRICT,这最终将限制任何发生冲突的DELETE操作。 你甚至可以通过其他方式将这些选项用于ON UPDATE操作。 在PostgreSQL 中关于定义多个ON CASCADE DELETE约束所面临的问题的简短说明 当你删除引用数千个表的行时,对所有继承表进行ON DELETE CASCADE会产生问题...
问当UPDATE导致重复值时使用ON update CASCADEEN如果updatingicd9中的条目导致unique constraint冲突，那么在...
We're running PostgreSQL 8.4.1. I don't see any smoking gun bugfixes in 8.4.2, but we'll upgrade ASAP anyway... What are your suggestions for how to proceed? Re: pg_dump and ON DELETE CASCADE problem From Adrian Klaver Date: 15 December 2009, 19:53:53 On Tuesday 15 December 2009...
(change requires restart)# These are only used if logging_collector is on:log_directory ='log'# directory where log files are written,# can be absolute or relative to PGDATA#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern,# can include strftime() escapes#log...
"fk_job_id" FOREIGN KEY (job_id) REFERENCES jobs(job_id) ON UPDATE RESTRICT ON DELETE CASCADE Have another way to solve this solution? Contribute your code (and comments) through Disqus. Previous:Write a SQL statement to add a foreign key on job_id column of job_history table referencing...
PostgreSQL 其他常见约束语法添加 1. 添加主键altertablegoodsaddprimarykey(sid); 2. 添加外键altertableordersaddforeignkey(goods_id)referencesgoods(sid)onupdatecascadeondeletecascade;onupdatecascade: 被引用行更新时,引用行自动更新;onupdaterestrict: 被引用的行禁止更新;ondeletecascade: 被引用行删除时,引用行也...
PostgreSQL中ON DELETE CASCADE的性能PostgreSQL在Linux上的运行速度肯定会比在Windows上快（我是作为编写...
Same here but with PostgreSQL. Any ideas? ngocketit commented Oct 14, 2021 I noticed that this won't work: type Option struct { Base Content string `gorm:"not null"` QuestionID string `gorm:"not null"` Question *Question `gorm:"constraint:OnDelete:CASCADE;"` } type Question struct ...
PostgreSQL 作者其他创作 大纲/内容 语法 数据类型 数值 smallint integer bigint decimal numeric real double precision smallserial serial bigserial 货币 money 字符 定长,不足补空白 character(n) char(n) 变长,有长度限制 character varying(n) varchar(n) ...