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How to Create a Function in Oracle


CREATE OR REPLACE
FUNCTION TESTBYNAME2(XKENTLI_AD VARCHAR2) 
RETURN VARCHAR2
IS
    XBABAADI VARCHAR2(50);
BEGIN
    SELECT BABA_ADI INTO XBABAADI FROM ORT_KENTLI WHERE ADI=XKENTLI_AD AND ROWNUM=1;
      IF xbabaadi='MEHMET' THEN
        XBABAADI:='KASIM';
      END IF;
RETURN XBABAADI;

END;
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