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CREATE OR REPLACE FUNCTION to_words (
m_amount_in IN NUMBER,
m_first_para IN VARCHAR2 := 'Dollars',
m_second_para IN VARCHAR2 := 'Cents'
)
RETURN VARCHAR2
AS
m_amount NUMBER := m_amount_in;
word_string VARCHAR2(1000);
lower_number NUMBER;
lower_str VARCHAR2(50);
loop_var NUMBER := 1;
/* Function declarartion to convert into string */
FUNCTION to_string (m_val_in NUMBER)
RETURN CHAR
IS
BEGIN
IF m_val_in > 0
THEN
RETURN (INITCAP (TO_CHAR (TO_DATE (m_val_in, 'SSSSS'), 'SSSSSSP')));
ELSE
RETURN (');
END IF;
END;
/* End of Function */
BEGIN
/*-------------- place the parameters at required places --------------*/
lower_number := (m_amount MOD 1) * 100;
/* Check for lower denominations not exceeding two digits */
IF length(lower_number) < 3
THEN
IF m_amount >= 1 and lower_number > 0
THEN lower_str :=
' ' ||
m_first_para ||
' & ' ||
LOWER (to_string (lower_number)) ||
' ' ||
m_second_para;
ELSIF m_amount < 1 and lower_number > 0
THEN lower_str :=
LOWER (to_string (lower_number)) ||
' ' ||
m_second_para;
ELSIF m_amount >= 1 and lower_number = 0
THEN lower_str := ' ' || m_first_para;
END IF;
ELSE
word_string := 'Invalid lower denomination !!' ;
RETURN (word_string);
END IF;
/*---------------- End of placing paramters -------------------------*/
WHILE loop_var = 1
LOOP
IF m_amount > 0
AND m_amount <= 1000
THEN
word_string :=
word_string ||
(INITCAP (to_string (FLOOR (m_amount))) || lower_str);
loop_var := 0;
ELSIF m_amount > 1000
AND m_amount < 1000000
THEN
word_string :=
word_string ||
(INITCAP (to_string (FLOOR (m_amount / 1000))) ||
' Thousand ' ||
to_string (FLOOR (m_amount MOD 1000)) ||
lower_str
);
loop_var := 0;
ELSIF m_amount >= 1000000
AND m_amount < 1000000000
THEN
word_string :=
word_string ||
INITCAP (to_string (FLOOR (m_amount / 1000000))) || ' Million ';
m_amount := FLOOR (m_amount MOD 1000000);
IF m_amount = 0
THEN
loop_var := 0;
word_string := word_string || lower_str;
END IF;
ELSIF m_amount >= 1000000000
AND m_amount <= 999999999999.99
THEN
word_string :=
INITCAP (
to_string (FLOOR (m_amount / 1000000000))) || ' Billion ';
m_amount := FLOOR (m_amount MOD 1000000000);
IF m_amount = 0
THEN
loop_var := 0;
word_string := word_string || lower_str;
END IF;
ELSIF m_amount = 0
THEN
word_string := ('Zero' || lower_str);
loop_var := 0;
ELSE
word_string := 'This is beyond my scope !!';
loop_var := 0;
END IF;
END LOOP;
RETURN (word_string);
END to_words;
/
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