SQL delete objects having and id range - sql

Question

I want to create a function in sql server that take as input an id range and delete all the object in that range (included the start and the end).
Let's have for example:
delete_objects_with_id(id_start,id_end)
It will delete all the objects with the id in the range id_start and id_end.
The problem is that the id are of this form: id_start=2017-0001 id_end=2017-0050 is there a sql server function that iterate on a list given a range?
first_issue content id
2011-01-01 test 2011-0001
2012-10-01 test 2012-0001
2012-11-01 test 2012-0002
2012-11-01 test 2012-0003

Answer 1

No, there's no builtin SQL Server function that will iterate on a list given a range.
If the id values are always nine characters, in the format four numeric digits, a dash and four more digits, then a comparison to character strings would get you the id values.
That is, you could write a query (SQL SELECT statement) to return the id values in that range,
SELECT t.id
FROM myobjects t
WHERE t.id >= '2017-0001'
AND t.id <= '2017-0050'
ORDER BY t.id
and with that query, you could define a cursor loop, and loop through (iterate) through those id values returned.
If the id values aren't in a canonical format, then the range operation isn't necessarily going to work. You'd need a mechanism to convert the id values into values that are canonical, so you can do a range.
But I'm not getting why you would need (or want) to iterate, if by "objects" you are referring to "rows" in a table. If you can write a SELECT statement that returns those rows, you could write a DELETE statement using the same predicates, and delete the rows in one fell swoop.
DELETE
FROM myobjects
WHERE id >= '2017-0001'
AND id <= '2017-0050'
It's not at all clear what you are attempting to achieve, why you would need to "iterate". But a cursor loop is one way to do that.
Again, to answer the question you asked: No. There is no "sql server function that iterate on a list given a range"

Answer 2

There is a simple workaround, Just remove - character and cast id as BIGINT
(This will work assuming that the first part of the id is year value and the second part is an id for each year)
DELETE FROM TABLE_1
WHERE CAST(REPLACE(id,'-','') as BIGINT) >= CAST(REPLACE(id_start,'-','') as BIGINT)
AND CAST(REPLACE(id,'-','') as BIGINT) <= CAST(REPLACE(id_end,'-','') as BIGINT)
Or use BETWEEN
DELETE FROM TABLE_1
WHERE CAST(REPLACE(id,'-','') as BIGINT) BETWEEN CAST(REPLACE(id_start,'-','') as BIGINT)
AND CAST(REPLACE(id_end,'-','') as BIGINT)