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Creating User-Defined Operators: Example
This example creates a very simple functional implementation of equality and then creates an operator that uses the function:
CREATE FUNCTION eq_f(a VARCHAR2, b VARCHAR2) RETURN NUMBER AS
BEGIN
IF a = b THEN RETURN 1;
ELSE RETURN 0;
END IF;
END;
/
CREATE OPERATOR eq_op
BINDING (VARCHAR2, VARCHAR2)
RETURN NUMBER
USING eq_f;
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9.2.0.5 = 3501955
9.2.0.6 = 3948480
9.2.0.7 = 4163445
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10.1.0.3 = 3761843
10.1.0.4 = 4163362
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10.2.0.2 = 4547817
10.2.0.3 = 5337014
10.2.0.4 = 6810189 ......
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create or replace procedure getok
as
cursor mycur is select ids,name from aaa where name not in (select names from ok);
vempno aaa.ids%type;
vename aaa.name%type;
begin
open mycur;
loop
fetch mycur into vempno,vename;
exit when mycur%notfound;
if mycur%found then
insert ......