Oracle PL/SQL/Conversion Functions/TO Number
Содержание
Converting a Character Formatted as Currency to an Integer Value
<source lang="sql">
SQL> SQL> DECLARE
2 v_Convert_Number VARCHAR2(20) := "$119,252.75";
3 v_Hold_Number NUMBER ;
4 BEGIN
5 v_Hold_Number := TO_Number(v_Convert_Number,"$999,999,999.99");
6 DBMS_OUTPUT.PUT_LINE("The converted number is: " || v_Hold_Number);
7 DBMS_OUTPUT.PUT_LINE("Your commission at 6% is: " ||
8 (v_Hold_Number*.06));
9 END;
10 /
The converted number is: 119252.75 Your commission at 6% is: 7155.165 PL/SQL procedure successfully completed. SQL> SQL> --
</source>
Converting a Character to an Integer Value
<source lang="sql">
SQL> SQL> DECLARE
2 v_Convert_Number VARCHAR2(20) := "1999";
3 v_Hold_Number NUMBER ;
4 BEGIN
5 v_Hold_Number := TO_Number(v_Convert_Number,"9999");
6 DBMS_OUTPUT.PUT_LINE("The converted number is: " || v_Hold_Number);
7 DBMS_OUTPUT.PUT_LINE("The converted number plus 10 is: " ||
8 (v_Hold_Number+10));
9 END;
10 /
The converted number is: 1999 The converted number plus 10 is: 2009 PL/SQL procedure successfully completed. SQL> SQL> --
</source>
Converting VARCHAR2 Percentage Data to a Decimal Equivalent
<source lang="sql">
SQL> SQL> DECLARE
2 v_Convert_Number VARCHAR2(20) := "33.33";
3 v_Hold_Number NUMBER ;
4 BEGIN
5 v_Hold_Number := TO_Number(v_Convert_Number,"999.999999");
6 DBMS_OUTPUT.PUT_LINE("The converted number is: " || v_Hold_Number);
7 DBMS_OUTPUT.PUT_LINE("Your decimal equivalent is: " ||
8 (v_Hold_Number/100));
9 END;
10 /
The converted number is: 33.33 Your decimal equivalent is: .3333 PL/SQL procedure successfully completed. SQL> SQL> SQL> --
</source>
Errors with the Format Mask
<source lang="sql">
SQL> SQL> DECLARE
2 v_Convert_Number VARCHAR2(20) := "$119,252.75";
3 v_Hold_Number NUMBER ;
4 BEGIN
5 v_Hold_Number := TO_Number(v_Convert_Number,"$99,999.99");
6 DBMS_OUTPUT.PUT_LINE("The converted number is: " || v_Hold_Number);
7 DBMS_OUTPUT.PUT_LINE("Your commission at 6% is: " ||
8 (v_Hold_Number*.06));
9 END;
10 /
DECLARE
ERROR at line 1: ORA-06502: PL/SQL: numeric or value error ORA-06512: at line 5
SQL> SQL> SQL> --
</source>
to_number("123")
<source lang="sql">
SQL> SQL> SQL> select 123
2 , to_char(123)
3 , to_char(123,"$09999.99")
4 , to_number("123")
5 from dual;
123 TO_ TO_CHAR(12 TO_NUMBER("123")
--- ---------- ----------------
123 123 $00123.00 123
SQL>
</source>
