Looping through specific values on a table and insert new rows - sql

Question

I have the following table:
ID, UserID, CompanyID, AccountID, Year1, Month1
I need to insert 10 rows to each AccountID, is there a way to loop through all AccountIDs and to insert for each one of them the following values?
INSERT INTO Perms (UserID, CompanyID, AccountID, Year1, Month1)
VALUES
(175, 74,x,2017,3),
(175, 74,x,2017,4),
(175, 74,x,2017,5),
(175, 74,x,2017,6),
(175, 74,x,2017,7),
(175, 74,x,2017,8),
(175, 74,x,2017,9),
(175, 74,x,2017,10),
(175, 74,x,2017,11),
(175, 74,x,2017,12)
I have about 100 AccountIDs and I need some sort of a loop.
Is that doable?

Answer 1

Use CTEs to represent the account and date sequences. In the case of the account ID values, we can use a recursive CTE. Below I arbitrarily generate values from 1 to 100, though this approach should work with any continuous range. For the year/month combinations, because there are only 10 we can simply hard code them in a CTE. Then, use INSERT INTO ... SELECT with a cross join of the two CTEs.
WITH accounts AS (
SELECT 1 AS account
UNION ALL
SELECT account + 1
FROM accounts
WHERE account + 1 <= 100
),
cte AS (
SELECT 2017 AS year, 3 AS month UNION ALL
SELECT 2017, 4 UNION ALL
SELECT 2017, 5 UNION ALL
SELECT 2017, 6 UNION ALL
SELECT 2017, 7 UNION ALL
SELECT 2017, 8 UNION ALL
SELECT 2017, 9 UNION ALL
SELECT 2017, 10 UNION ALL
SELECT 2017, 11 UNION ALL
SELECT 2017, 12
)
INSERT INTO Perms (UserID, CompanyID, AccountID, Year1, Month1)
SELECT 175, 74, account, year, month
FROM accounts
CROSS JOIN cte;
OPTION (MAXRECURSION 255);
Edit:
If your account IDs are not continuous, then continuing with this answer you may just manually list them in a CTE, e.g.
WITH accounts AS (
SELECT 71 AS account UNION ALL
SELECT 74 UNION ALL
SELECT 78 UNION ALL
SELECT 112 UNION ALL
SELECT 119
-- and others
)

Answer 2

Try this. This is very similair to already existing answer, but more compact:
;with cte as (
select 175 [UserID], 74 [CompanyID], 2017 [Year1], 3 [Month1]
union all
select 175 [UserID], 74 [CompanyID], 2017 [Year1], [Month1] + 1 from cte
where [Month1] < 12
)
select A.[UserID], A.[CompanyID], B.[AccountID], A.[Year1], A.[Month1] from cte A cross join TABLE_NAME B

Answer 3

If you have the accountId's stored in a table and what you want is to insert 10 rows for each account id with Month1 from 3 to 12, try this
WITH CTE
AS
(
SELECT
Month2 = 1
UNION ALL
SELECT
Month2+1
FROM CTE
WHERE Month2 <12
)
INSERT INTO Perms (UserID, CompanyID, AccountID, Year1, Month1)
SELECT
UserID = 175,
CompanyID ='X',
AccountID = YAT.AccountID,
Year1 = 2017,
Month1 = CTE.Month2
FROM CTE
INNER JOIN YourAccountTable YAT
ON CTE.Month2 BETWEEN 3 AND 12
Change the between clause if you want diffrent values