ON CONFLICT DO UPDATE:类似于上述方法,但是可以在冲突时执行更新操作。例如,如果email已经存在,则更新name字段的值: 代码语言:txt 复制 INSERT INTO users (email, name) VALUES ('example@example.com', 'John Doe') ON CONFLICT (email) DO UPDATE SET name = EXCLUDED.name; 这样,如果email已经存在,将...
Though it doesn't give you shorthand for replacement, ON CONFLICT DO UPDATE applies more generally, since it lets you set new values based on preexisting data. For example: INSERT INTO users (id, level) VALUES (1, 0) ON CONFLICT (id) DO UPDATE SET level = users.level + 1; Share...
INSERT INTO conflict_test (stud_name, stud_email) VALUES ('ABC', 'abc@hotmail.com') ON CONFLICT ON CONSTRAINT conflict_test_stud_name_key DO NOTHING; select * from conflict_test; Example #2 – On conflict statement with column name as the target. The example below illustrates the usage ...
name varchar); postgres=# INSERT INTO t VALUES (1, 'keyerror'), (1, 'buuuuz') postgres=# ON CONFLICT (id) DO UPDATE SET name = 'Buuuuuuuuuz'; ERROR: ON CONFLICT DO UPDATE command cannot affect row a second time HINT: Ensure that no rows proposed for insertion within the same ...
INSERT INTO "test_table" ("id", "id_secondary", "value") VALUES('1', '1', 'false') ON CONFLICT ("id") DO UPDATE SET "value" = "excluded"."value"; INSERT INTO "test_table" ("id", "id_secondary", "value") VALUES('1', '1', 'true') ON CONFLICT ("id"...
createtabletable4(id int4primarykey,nametext);insertintotable4(id,name)values(1001,'aladdin'),(1002,'bilib'),(1003,'coop');-- UPSERT 操作insertintotable4(id,name)values(1001,'apple')onconflict(id)-- 可以选择什么也不做-- do nothingdoupdatesetname=EXCLUDED.name; ...
UPSERT是INSERT, ON CONFLICT UPDATE的简写,简而言之就是:插入数据,正常时写入,主键冲突时更新。以下给个简单的例子: --创建测试表,并插入一条数据。CREATETABLE customer (cust_idINTEGER PRIMARYKEY,nameTEXT);INSERTINTO customerVALUES (100, ’Big customer’);--常规INSERT语句,主键冲突,报错。INSERTINTO custo...
on conflict do update set insert into users(user_id, user_name) values('123','naruto'),('222','sasuke')on conflict(user_id) do update set user_name=excluded.user_name; 回到顶部 MySQL的案例 安装配置mycli //brew 安装brew install mycli//用户名:root;密码:123;本地端口是:3307mycli -uroot...
any expression using the table's columns is allowed. The syntax of theRETURNINGlist is identical to that of the output list ofSELECT.Only rows that were successfully inserted or updated will be returned. For example, if a row was locked but not updated because anON CONFLICT DO UPDATE ... ...
insert on conflict语法实现了upsert的功能,即在插入发生主键冲突、或唯一约束冲突时,执行on conflict后面的语句,将insert变成update或do nothing避免报错。 语法手册:https://www.postgresql.org/docs/current/sql-insert.html 测试用例: 代码语言:javascript