Hi All,
create or replace function max(
a float8 not null not default,
b float8 not null not default
)
return (float8 not null) as
begin
if (:a >= :b) then
return :a;
else
return :b;
endif;
end;
\p\g
Now that doesn't work as SQL based UDFs can't use the IF-THEN-ENDIF syntax. That seems way too restrictive to me.
But I thought, we could just as easily do the test in JavaScript which is supposed to be supported. So...
create or replace function max(
a float8 not null not default,
b float8 not null not default
)
return (float8 not null) as LANGUAGE JAVASCRIPT SOURCE = 'if (a >= b) {return a} else {return b}';
Executing . . .
E_PS0316 Unrecognised UDF language: 'javascript'
Any suggestions?
Marty
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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">create or replace function max(<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> a float8 not null not default,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> b float8 not null not default<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">return (float8 not null) as<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">begin<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> if (:a >= :b) then<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> return :a;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> else<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> return :b;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> endif;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">end;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">\p\g<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now that doesn’t work as SQL based UDFs can’t use the IF-THEN-ENDIF syntax. That seems way too restrictive to me.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But I thought, we could just as easily do the test in JavaScript which is supposed to be supported. So…<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">create or replace function max(<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> a float8 not null not default,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""> b float8 not null not default<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">return (float8 not null) as LANGUAGE JAVASCRIPT SOURCE = 'if (a >= b) {return a} else {return b}';<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">Executing . . .<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Lucida Console"">E_PS0316 Unrecognised UDF language: 'javascript'<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any suggestions?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Marty<o:p></o:p></p>
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