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ORACLE PL/SQL

ORACLE PL/SQL. Records. Εγγραφές ( Records ). DECLARE TYPE t_Rec1Type IS RECORD ( Field1 NUMBER, Field2 VARCHAR2(5)); TYPE t_Rec2Type IS RECORD ( Field1 NUMBER, Field2 VARCHAR2(5)); v_Rec1 t_Rec1Type; v_Rec2 t_Rec2Type; BEGIN

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ORACLE PL/SQL

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  1. ORACLE PL/SQL Records

  2. Εγγραφές (Records) DECLARE TYPE t_Rec1Type IS RECORD ( Field1 NUMBER, Field2 VARCHAR2(5)); TYPE t_Rec2Type IS RECORD ( Field1 NUMBER, Field2 VARCHAR2(5)); v_Rec1 t_Rec1Type; v_Rec2 t_Rec2Type; BEGIN /* αν και το v_Rec1 και το v_Rec2 έχουν συνώνυμα πεδία, οι τύποι εγγραφών διαφέρουν. Δεν ισχύει η δήλωση v_Rec1 := v_Rec2; Αλλά οι παρακάτω δηλώσεις είναι σωστές*/ v_Rec1.Field1 := v_Rec2.Field1; v_Rec2.Field2 := v_Rec2.Field2; END;

  3. %ROWTYPE set serveroutput on size 1000000; declare t_person emp%ROWTYPE; begin Select * into t_person from emp where empno=7788; dbms_output.put_line(t_person.ename); end; /

  4. Στυλ γραφής -Σχόλια DECLARE V_pwk number; -- Βαρος πιπεριου σε κιλα V_pgpc3 number; -- Κοκκοι ανα κυβικο εκατοστο BEGIN /* ** Διαδικασια «ΠΩΣ ΤΟ ΤΡΙΒΟΥΝ ΤΟ ΠΙΠΕΡΙ» **asto 23/5/2010 */ Calc_num_of_monks; -- ανευρεση απαιτουμενου προσωπικου .... END

  5. Ονόματα μεταβλητών v_=Variable e_=Exception t_ =Type p_=Parameter c_=Constant

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