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2013-01-03T17:06:20.107
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<pre><code>create type t_row as object (a varchar2(10)); create type t_row_tab as table of t_row; </code></pre> We will now create a function which will split the input string. <pre><code>create or replace function get_number(pv_no_list in varchar2) return t_row_tab is lv_no_list t_row_tab := t_row_tab(); begin for i in (SELECT distinct REGEXP_SUBSTR(pv_no_list, '[^,]+', 1, LEVEL) no_list FROM dual CONNECT BY REGEXP_SUBSTR(pv_no_list, '[^,]+', 1, LEVEL) IS NOT NULL) loop lv_no_list.extend; lv_no_list(lv_no_list.last) := t_row(i.no_list); end loop; return lv_no_list; end get_number; </code></pre> Once the function is in place we can use the table clause of sql statement to get the desired result. As desired we got multiple values returned from the function. <pre><code>SQL> select * from table(get_number('1,2,3,4')); A ---------- 1 3 2 4 </code></pre> So now our function is simply behaving like a table. There can be a situation where you want these comma separated values to be a part of "IN" clause. For example : <pre><code>select * from dummy_table where dummy_column in ('1,2,3,4'); </code></pre> But the above query will not work as '1,2,3,4' is a string and not individual numbers. To solve this problem you can simply use following query. <pre><code>select * from dummy_table where dummy_column in ( select * from table(get_number('1,2,3,4')) ); </code></pre> References : <a href="http://www.oraclebin.com/2012/12/returning-multiple-values-from-function.html" rel="nofollow">http://www.oraclebin.com/2012/12/returning-multiple-values-from-function.html</a>
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