Query by exmaple in Apex 3.1

Question

Does Apex 3.1 support query by example? Does Apex 3.1 have query possibilities like Oracle Forms do?
Tnx, in advance.
Dejan

Answer 1

Dejan,
I appreciate your enthusiasm but you need to slow down a bit. Sending you all the examples I have is out of the question. I can give you an example, which I have below. You can take that and work with it to get where you need to be. Here is one of my functions that returns a SQL string.
create or replace
FUNCTION          "SQL_IP_SUBNET" (
p_octet1 in varchar2,
p_octet2 in varchar2,
p_octet3 in varchar2,
p_octet4 in varchar2,
p_slash in varchar2,
p_status in varchar2)
return varchar2
as
l_select varchar2(1000);
l_octet1 varchar2(200);
l_octet2 varchar2(200);
l_octet3 varchar2(200);
l_octet4 varchar2(200);
l_slash varchar2(200);
l_status varchar2(200);
l_cidr varchar2(50);
l_where varchar2(1000);
l_order_by varchar2(100);
l_sql varchar2(32767);
begin
l_select := q'!select id, get_ip_addr(octet1, octet2, octet3, octet4) ip_addr, slash, description, !';
l_select := l_select || q'! octet1, octet2, octet3, octet4 from poc_subnets where 1=1!';
if (p_octet1 is not null) then
l_octet1 := q'! and octet1=!' || p_octet1;
end if;
if (p_octet2 is not null) then
l_octet2 := q'! and octet2=!' || p_octet2;
end if;
if (p_octet3 is not null) then
l_octet3 := q'! and octet3=!' || p_octet3;
end if;
if (p_octet4 is not null) then
l_octet4 := q'! and octet4=!' || p_octet4;
end if;
if (p_slash is not null) then
if substr(p_slash,1,1) != '/' and length(p_slash) = 2 then
  l_cidr := '/'||p_slash;
else
  l_cidr := p_slash;
end if;
l_slash := q'! and slash='!' || l_cidr || q'!'!';
end if;
if length(l_octet1) > 0 then
l_where := l_octet1;
end if;
if length(l_octet2) > 0 then
l_where := l_where || l_octet2;
end if;
if length(l_octet3) > 0 then
l_where := l_where || l_octet3;
end if;
if length(l_octet4) > 0 then
l_where := l_where || l_octet4;
end if;
if length(l_slash) > 0 then
l_where := l_where || l_slash;
end if;
if length(p_status) > 0 then
case
  when p_status = 'YES' then
   l_status := q'! and assigned = 'YES'!';
  when p_status = 'NO' then
   l_status := q'! and assigned = 'NO'!';
  else
   l_status := null;
end case;
end if;
if length(l_status) > 0 then
l_where := l_where || l_status;
end if;
-- do the order by clause
l_order_by := q'! order by octet1, octet2, octet3, octet4!';
if length(l_where) > 0 then
l_sql := l_select||l_where||l_order_by;
else
l_sql := l_select||l_order_by;
end if;
return l_sql;
end sql_ip_subnet;I'm assuming you're familiar with creating and using functions in Oracle. The important thing to realize is that each of the parameters passed into the function are going to be an item on your page. So the call to the function in the report region source looks something like this:
declare
l_sql varchar2(4000);
begin
l_sql := sql_ip_subnet(:P1_OCTET1, :P1_OCTET2, ....);
return l_sql;
end;If you would like to see an example application I would be glad to post one on the apex.oracle.com workspace so you can see it. Just give me a day to put it together there and I'll let you know when it's ready.
Earl