To insert a new user or update an existing one based on the id:Code:INSERT INTO users (id, name, email) VALUES (1, 'Abiola Updated',‘abiola.new@example.com') ON CONFLICT (id) DO UPDATE SET name = EXCLUDED.name, email = EXCLUDED.email; The EXCLUDED keyword refers to the new ...
INSERT INTO users (id, name, email) VALUES (1, 'John Doe', 'john@example.com') ON CONFLICT (id) DO UPDATE SET name = EXCLUDED.name, email = EXCLUDED.email; 在这个例子中,如果 id 为1 的用户已经存在,那么该用户的 name 和email 将被更新为 'John Doe' 和'john@example.com'。 4. 测...
2) Inserting data example The following example uses the INSERT ... ON CONFLICT statement to insert a new row into the inventory table: INSERT INTO inventory (id, name, price, quantity) VALUES (4, 'D', 29.99, 20) ON CONFLICT(id) DO UPDATE SET price = EXCLUDED.price, quantity = EXCLU...
postgres=# select*from decoding_test;x|y---+---12|9101|20--插入时发生主键冲突,执行后面的update语句,将y更新为400,EXCLUDED表示准备要新插入的这一行数据。 postgres=#INSERTINTOdecoding_test(x,y)values(101,400)onconflict(x)doupdatesety=EXCLUDED.y;INSERT01postgres=# select*from decoding_test;x|...
For example, if a row was locked but not updated because an ON CONFLICT DO UPDATE ... WHERE clause condition was not satisfied, the row will not be returned. Use of the RETURNING clause requires SELECT privilege on all columns mentioned in RETURNING. If you use the query clause to insert...
The ON CONFLICT ... DO UPDATE clause updates the price column if a row with the same book_id already exists. Insert with SubqueryThis example demonstrates how to insert data using a subquery: insert_with_subquery.sql -- CREATE TABLE old_books ( -- book_id INTEGER PRIMARY KEY, -- title...
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,将更新name字段的值为新插入的值。 推荐的腾讯云相关产品:腾讯云数据库 PostgreSQL版(https://cloud.tencent.com/product/postgres) 腾讯云数据库...
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...
可以是具体的 IP 地址,如 192.168.1.100;all 或 0.0.0.0 表示任何 IP 地址;::1 表示 IPv6 的本地环回地址;localhost 表示通过主机名解析的本地连接;% 表示通配符,匹配任何地址;.example.com 表示以 .example.com 结尾的任何主机名。 5、METHOD: 指定用于身份验证的方法。可能的值包括: trust: 不需要任何...