Temp Table In SQL Function

Hello!

I am trying to create a sql function that returns 2
values using temporary table as the "media":

database1=# CREATE FUNCTION SaveNumeric(int2,int2)
RETURNS INTEGER AS '
database1'#  CREATE TEMP TABLE mytemp(a int2,b int2);
database1'#  INSERT INTO mytemp VALUES ($1+1,$2+100);
database1'#  SELECT 1;
database1'# ' LANGUAGE 'sql';
ERROR:  Relation 'mytemp' does not exist

But below seems to work:

database1=# CREATE FUNCTION Drop2Numeric() RETURNS
INTEGER AS '
database1'#  DROP TABLE mytemp;
database1'#  SELECT 1;
database1'# ' LANGUAGE 'sql';
CREATE

Why the creation of SaveNumeric(int2,int2) fails
while the creation of Drop2Numeric() succeeds?

Regards,

CN

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