此表的主键是生成的UUID。我试图向这个数据库中添加一个日志表，以便每当添加或删除一行时，日志记录表...
但是可以使用 insert into ... select 当然也可以使用 create table <new table> select * from <...
insert into tbl0 values (NEW.*); when 1 then insert into tbl1 values (NEW.*); when 2 then insert into tbl2 values (NEW.*); when 3 then insert into tbl3 values (NEW.*); else return NEW; -- 如果是NULL则写本地父表 end case; return null; end; $$ language plpgsql strict; 1....
*/ @Test public void testInsert(){ //User user = new User(); //user.setUserName("damimi"); //user.setAge(18); //user.setName("大幂幂"); //user.setPassword("666"); //user.setEmail("damimi@"); // 使用java的构建者模式,帮我们创建对象 User user = User.builder() .userName("...
这个是Postgres-XL的拓展包,提供了uuid,fdw等很有用的工具 [root@localhost ~postgres-xl]# cd contrib/ [root@localhost ~contrib]# make [root@localhost ~contrib]# make install 10、Postgres-XL配置 在三台服务器都要配置 修改文件夹所有者 将/home/postgres下所有文件的所有者变更为postgres用户 ...
MERGE in Postgres 15 How the MERGE command works in Postgres Postgres' INSERT ON CONFLICT command: Why does it exist? What we have discussed in this episode of 5mins of Postgres Transcript…Continue reading 5mins of Postgres E10: max_wal_size, Postgres full page writes and UUID vs BIGINT...
id uuidPRIMARY KEYDEFAULT uuid_generate_v4(), nameVARCHARUNIQUENOT NULL, descriptionVARCHARNOT NULLDEFAULT'', created_atTIMESTAMPNOT NULLDEFAULT NOW() ); the following structs: #[derive(Queryable,Insertable)]#[diesel(table_name =crate::schema::software)]#[diesel(check_for_backend(diesel::pg:...
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(), chat_name VARCHAR, last_message TIMESTAMP NOT NULL ); FromUPDATE: 不要在目标列的规范中包含表名 因此,要更新的列last_updated不应使用chats.last_updated这样的表名进行限定: UPDATE chats SET last_updated = result.message_timestamp ...
Compiling uuid v0.8.2 Compiling flate2 v1.0.20 Compiling url v2.2.2 Compiling cexpr v0.4.0 Compiling as-slice v0.1.5 Compiling rand_chacha v0.2.2 Compiling crossbeam-deque v0.8.0 Compiling env_proxy v0.4.1 Compiling env_logger v0.8.4 ...
create or replace function add_planet(name text) returns bigint language plpgsql as $$ declare new_row bigint; begin insert into planets(name) values (add_planet.name) returning id into new_row; return new_row; end; $$; 同样,您可以通过选择查询在数据库内部执行此函数,或使用客户端库: sele...