The program structure of Oracle PL/SQL and basic data variable types

a grammar

declare

    Description part (variable description, cursor declaration, exception description)

begin

    Statement sequence (DML)

exception

    exception handling statement

end;

/

 

Two explanation part

1. Define basic variables

2. Type

char,varchar2,date,number, boolean, long

3. Examples

var1 char(15);

married boolean := true;

psal number(7,2);

 

three code

1. --使用基本变量
2. declare
3. --定义基本变量类型
4. --基本数据类型
5. pnumber number(7,2);
6. --字符创变量
7. pname varchar2(20);
8. --日期变量
9. pdate date;
10. begin
11. pnumber :=1;
12. dbms_output.put_line(pnumber);
13. pname :='tom';
14. dbms_output.put_line(pname);
15. pdate := sysdate;
16. dbms_output.put_line(pdate);
17. --计算明天的日期
18. dbms_output.put_line(pdate +1);
19. end;
20. /

Four running results

1

tom

30-Jun-17

01-July-17

 

PL/SQL procedure completed successfully.