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if OBJECT_ID('tb') is not null
drop table tb
go
CREATE TABLE tb(ID char(3),PID char(3),Name nvarchar(10))
INSERT tb SELECT '001',NULL ,'ɽ¶«Ê¡'
UNION ALL SELECT '002','001','ÑĮ̀ÊÐ'
UNION ALL SELECT '004','002','ÕÐÔ¶ÊÐ'
UNION ALL SELECT '003','001','ÇൺÊÐ'
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CREATE OR REPLACE FUNCTION ntfuc(inp IN NUMBER)
RETURN NUMBER
IS
ntmp NUMBER;
BEGIN
ntmp := inp;
RETURN ntmp;
END ntfuc;
/
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DECLARE
rcn NUMBER;
BEGIN
rcn := ntfunc(1);
END;
/ ......

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upper(char_expr) תΪ´óд
lower(char_expr) תΪСд
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