复制一个表中的值并将其插入另一个jsonb字段

Question

请帮助我理解，如何从一个表中复制值并将其插入到jsonb字段中的另一个表中？

additional_info是产品表中的jsonb字段。

dedication, stories, status我希望在additional_info字段中复制书籍表中的这些字段。

我试过这样，但显然这不是正确的

INSERT INTO products (order_id, name, price, type, additional_info)

SELECT order_id, name, null, 'Book', '{\"dedication\": dedication, \"stories\": stories, \"status\": status }'

FROM books;

Answer 1

您需要使用jsonb_build_object。 \在SQL中没有特殊含义，SQL字符串文字中不需要\"：

INSERT INTO products (order_id, name, price, type, additional_info)
select order_id, 
       name, 
       null, 
       'Book', 
       jsonb_build_object('dedication', dedication, 'stories', stories, 'status', status)
from books

Answer 2

像这样的东西。虽然我不确定你是如何使用斜线＆＃34; \＆＃34;。

INSERT INTO products (order_id, name, price, type, additional_info)

SELECT order_id, name, null, 'Book', json_build_object("dedication\", dedication,  "stories\", stories, "status\", status) AS additional_info

FROM books;