pgsql批量插入数据

pgsql批量插入数据可以使用INSERT INTO ... SELECT语法，将查询的结果插入表中。具体操作步骤如下：

1.创建目标表，例如：

CREATE TABLE user_A(
    id int primary key,
    name varchar,
    order_date date,
    total_amount numeric(10,2)
);

2.编写查询语句，例如：

SELECT c.customer_id, c.customer_name, o.order_date, o.total_amount
FROM orders o, products p, customers c
WHERE o.customer_id = c.customer_id AND o.order_id = p.product_id AND total_amount > 100;

3.将查询结果插入目标表中，例如：

INSERT INTO user_A(id, name, order_date, total_amount)
SELECT c.customer_id, c.customer_name, o.order_date, o.total_amount
FROM orders o, products p, customers c
WHERE o.customer_id = c.customer_id AND o.order_id = p.product_id AND total_amount > 100;

这样就可以将查询结果批量插入到目标表中了。