Alert on query

Question

(Forms_Portal) How can I show a alert when query no returns values?

Answer 1

Can you please try the following for Form on Table:-
1>
In the Formatting and Validation section, select the Query button in the left frame.
If you have more than one query button, please put the code for both the button to get similar effect when you click
either query button.
In the right frame, go to the pl/sql button handler section and for the Query event, add the following code after the
statement doQuery;
declare
l_fs varchar2(200);
l_msg varchar2(100);
begin
l_fs := p_session.get_value_as_varchar2(
p_block_name => 'DEFAULT',
p_attribute_name => '_FORM_STATE');
if l_fs = 'QUERY_AND_INSERT' then
l_msg := 'Query fetched no data';
else
l_msg := null;
end if;
p_session.set_value(
p_block_name => 'DEFAULT',
p_attribute_name => '_STATUS',
p_value => l_msg);
end;
2>
Goto the Additional pl/sql section and put the following code in either
"...before displaying the page" or "...after displaying the page" area.
declare
l_msg varchar2(200);
begin
l_msg := p_session.get_value_as_varchar2(
p_block_name => 'DEFAULT',
p_attribute_name => '_STATUS');
if l_msg is not null and
l_msg = 'Query fetched no data'
then
htp.p('
<script>
alert("'||l_msg||'");
</script>
end if;
end;
3> Finish creating the form and run it.
Note:
In case of Master-Detail forms, please replace :
'DEAFULT' with 'MASTER_BLOCK' and
'QUERY_AND_INSERT' with 'QUERY_AND_SAVE'