Insert value from three tables into an empty table - sql

Question

I need to select FirstName, LastName, deliver_date, order_id, total_price from table 1, table 2, table 3 according to id and order_id and put those into table 4.
Table 1
id FirstName LastName
-------------------------
1 mr.xxxx xxx
2 mr.ssss sss
3 mr.yyyy yyy
Table 2
order_id deliver_date id tracking_number
----------------------------------------------
01 10/01/2017 1 1
02 10/01/2017 2 2
03 10/01/2017 3 3
Table 3
order_id total_price item qty
-----------------------------------------------
01 some price xx some quantity xx
02 some price xx some quantity xx
03 some price xx some quantity xx
Table 4
FirstName, LastName, deliver_date, order_id, total_price
I try to do it like this:
INSERT INTO RECEIPT (CUST_FNAME, CUST_LNAME, CUST_EMAIL, CUST_MOBILE, CUST_ADDRESS, CUST_CITY, CUST_STATE, CUST_POSTCODE, DELIVERY_DATE, TOTAL_PRICE, CUST_ID, ORDER_ID)
VALUES (SELECT CUSTOMER.CUST_FNAME, CUSTOMER.CUST_LNAME, CUSTOMER.CUST_EMAIL, CUSTOMER.CUST_MOBILE, CUSTOMER.CUST_ADDRESS, CUSTOMER.CUST_CITY, CUSTOMER.CUST_STATE, CUSTOMER.CUST_POSTCODE , ORDERS.DELIVERY_DATE, "ORDER DETAIL".TOTAL_PRICE, ORDERS.CUST_ID, ORDERS.ORDER_ID FROM CUSTOMER, ORDERS, "ORDER DETAIL" WHERE CUSTOMER.CUST_ID = ORDERS.CUST_ID AND ORDERS.ORDER_ID = "ORDER DETAIL".ORDER_ID)
But I get an error :
SQL0412N Multiple columns are returned from a subquery that is allowed only one column. SQLSTATE=42823

Answer 1

When using INSERT statement while selecting data from another table, you need to omit VALUES keyword.
So, it should be
INSERT INTO <TABLE_NAME>(col1, col2...)
SELECT col1, col2...
Also, make sure have same number of columns with same in same sequence, otherwise, you will be inserting wrong values or your query will throw error due to mis-match data type.

Answer 2

try this:
insert into table4 (FirstName, LastName, deliver_date, order_id, total_price)
select f1.FirstName, f1.LastName, f2.deliver_date, f2.order_id, f3.total_price
from table1 f1
inner join table2 f2 on f1.id=f2.id
inner join table3 f3 on f2.order_id=f3.order_id

Answer 3

You have the error in " ...VALUES (SELECT CUSTOMER.CUST_FNAME, ... " in the first column to insert, maybe this sub-query has more than 1 row.
You must adjust this query to return 1 row only (more filters).
Anyway other form to backup your values to another new table, is selecting the exactly columns from your new table and save this query into a .csv file.
Example:
CREATE TABLE new_table
(
id SERIAL NOT NULL,
FirstName VARCHAR,
LastName VARCHAR
....
);
SELECT table1.FirstName, table2.LastName, ...
FROM table1
INNER JOIN ....
-- this query you must save into a csv file (if your DB engine is allowed to save to csv).
After you have the file ready, you must load again in the new table.