Split/explode comma delimited string field into SQL query

Question

I have field id_list='1234,23,56,576,1231,567,122,87876,57553,1216'

and I want to use it to search IN this field:

SELECT * 
FROM table1
WHERE id IN (id_list)

• id is integer

• id_list is varchar/text

But in this way this doesn't work, so I need in some way to split id_list into select query.

What solution should I use here? I'm using the T-SQL Sybase ASA 9 database (SQL Anywhere). But in this way this doesn't work, so I need in some way to split id_list into select query.

Way I see this, is to create own function with while loop through, and each element extract based on split by delimiter position search, then insert elements into temp table which function will return as result.

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COMMENTS TO Sebastian Meine ANSWER AND HIS SOLUTIONS :

Sybase SQL Anywhere 9

• sa_split_list system procedure not exist here, so it doesn't work

• CAST works great

Sybase SQL Anywhere 12

• sa_split_list system procedure exist and works great

• CAST works great

For the Sybase SQL Anywhere 9 I have made sa_split_list system procedure replacement:

CREATE PROCEDURE str_split_list(in str long varchar, in delim char(10) default ',')
RESULT(
  line_num integer,
  row_value long varchar)
BEGIN
  DECLARE str2 long varchar;
  DECLARE position integer;

   CREATE TABLE #str_split_list (
   line_num integer DEFAULT AUTOINCREMENT,
   row_value long varchar null,
   primary key(line_num));

   SET str = TRIM(str)+delim;
   SET position = CHARINDEX(delim, str);

   separaterows:
   WHILE position > 0 loop
       SET str2 = TRIM(LEFT(str, position - 1));
       INSERT INTO #str_split_list (row_value)
       VALUES (str2);
       SET str = RIGHT(str, LENGTH(str) - position);
       SET position = CHARINDEX(delim, str);
    end loop separaterows;

   select * from #str_split_list order by line_num asc;

END

Execute the same way as sa_split_list:

select * from str_split_list('1234,23,56,576,1231,567,122,87876,57553,1216')