PostgreSqlServerCreateOrUpdateContent Constructors Properties Explicit Interface Implementations IJsonModel<PostgreSqlServerCreateOrUpdateContent>.Create IJsonModel<PostgreSqlServerCreateOrUpdateContent>.Write IPersistableModel<PostgreSqlServerCreateOrUpdateContent>...
\n"+5"section_name,\n"+6"section_code,\n"+7"province_name,\n"+8"province_code,\n"+9"city_name,\n"+10"city_code,\n"+11"basin_name,\n"+12"river_name,\n"+13"result,\n"+14"analyse_item,\n"+15"water_quality,\n"+16"water...
3、创建存储过程 存储过程,使用 CREATE PROCEDURE 语句创建 存储过程的定义和函数主要的区别在于没有返回值,其他内容都类似。以下示例创建了一个存储过程用于修改用户的信息 CREATE OR REPLACE PROCEDURE update_user (user_id in integer,user_name IN VARCHAR) AS $$ BEGIN UPDATE b_user SET name = user_name ...
Create Or Replace Trigger Trg_InsUpdDel_t Instead Of Insert or update or delete on t for each row Declare begin If Inserting Then Insert Into t1 (t11,t12) Values (:New.f1,:New.f2); Insert Into t2 (t11,t22) Values (:New.f1,:New.f3); elsif Updating Then Update t1 set t11=:New....
CREATE OR REPLACE FUNCTION update_table_b() RETURNS TRIGGER AS $$ BEGIN -- 在冲突时更新表B UPDATE table_b SET data = NEW.name WHERE id = NEW.id; RETURN NEW; END; $$ LANGUAGE plpgsql; CREATE TRIGGER update_table_b_trigger AFTER INSERT OR UPDATE ON table_a ...
create tabletest(idSERIALprimary key,tracker_idvarchar(37),last_sync_date bigint,ts bigint,sequence_number bigint);alter table testaddconstraint test_unique_trackerunique(tracker_id); 那这句upsert要怎么写呢?通过google, 一般只看到存在就update的例子,很难找到update之前还有条件的。通过查找文档和试验...
GRANT { { SELECT | INSERT | UPDATE | DELETE | RULE | REFERENCES | TRIGGER } [,...] | ALL [ PRIVILEGES ] } ON [ TABLE ] table_name [, ...] TO { username | GROUP group_name | PUBLIC } [, ...] [ WITH GRANT OPTION ] GRANT { { CREATE | TEMPORARY | TEMP } [,...] |...
CREATE OR REPLACE FUNCTION update_my_view()RETURNS TRIGGER AS $$DECLAREBEGIN-- Update the materialized view here.REFRESH MATERIALIZED VIEW CONCURRENTLY vvv;RETURN NULL;END;$$ LANGUAGE plpgsql; 触发器的创建(此触发器是基于基表的哦): CREATE TRIGGER update_my_view_triggerAFTER INSERT OR UPDATE OR ...
postgres=# begin;BEGINpostgres=# update test1setid=2;UPDATE1 会话2: 代码语言:javascript 复制 postgres=# create index concurrently ontest1(id); 发现会话2hang住,会话1事务结束后会话2完成。 实验2:验证其他表长事务对并发创建索引的影响 会话1:(使用copy from stdin模拟一个一直活动的事务) ...
当行的长度超过TOAST_TUPLE_THRESHOLD时,会调用toast_insert_or_update,即触发TOAST。 src/backend/access/heap/heapam.c 四、”坑“ DELETE、VACUUM、VACUUM FULL 和 TRUNCATE 实验步骤(控制变量): --1. create table + 插入数据 insert into tbl_article select 2,'maleah','toast_test_another',repeat('This...