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集群架构
INSERT INTO products (name, price, product_no) VALUES ('cheese', 99, 1);
INSERT INTO products VALUES(2, 'chesse', 99);
INSERT INTO products VALUES (3, 'a', 1), (4, 'b', 2), (5, 'c', 3);
COPY tablename FROM 'filename' WITH DELIMITER ',';
UPDATE products SET price = 10 where product_no = 3;
DELETE FROM products where price = 3;
DELETE FROM products;
\\c test;
create table test(a1 int);
insert into test values(3),(4);
select * from test;
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