1 --Function主体
 2 CREATE FUNCTION [dbo].[FnMoneyStyle](@Number float,@strType char(1))
 3 RETURNS VARCHAR(100)
 4 AS
 5 BEGIN 
 6     DECLARE @ReturnValue varchar(100)
 7     SET @ReturnValue=0
 8     SET @Number=ISNULL(@Number,0)
 9     --千分
10     IF @strType = '1'    --千分 无小数点
11         SET @ReturnValue= left(convert(varchar,convert(money,@Number),1),len(convert(varchar,convert(money,@Number),1))-3)
12     IF @strType = '2'    --千分 两位小数点
13         SET @ReturnValue= convert(varchar,convert(money,@Number),1)
14     IF @strType = '5'    --千分 两位小数点 去掉.00
15         SET @ReturnValue=REPLACE(convert(varchar,convert(money,@Number),1),'.00', '')
16     --非千分
17     IF @strType = '3'    --四位小数
18         SET @ReturnValue= convert(varchar,convert(money,@Number),2)
19     IF @strType = '4'    --去掉.00
20         SET @ReturnValue=REPLACE(convert(varchar,convert(money,@Number)),'.00', '')
21     
22     RETURN @ReturnValue
23 END
24 
25 --Function测试结果:
26 SELECT dbo.FnMoneyStyle(300000.00,1)--返回结果:300,000
27 SELECT dbo.FnMoneyStyle(300000.00,2)--返回结果:300,000.00
28 SELECT dbo.FnMoneyStyle(300000.00,3)--返回结果:300000.0000
29 SELECT dbo.FnMoneyStyle(300000.00,4)--返回结果:300000

 1 --function主体：
 2 create or replace function FnMoneyStyle
 3 (
 4   fNumber float,
 5   strType varchar2
 6 ) return varchar2 
 7 as
 8   ReturnValue varchar2(4000):=0;
 9 begin
10     
11   --千分
12   IF strType = '1' THEN --千分 无小数点
13     SELECT SUBSTR
14     (
15       TRIM(DECODE(fNumber,0,'0.00',TO_CHAR(fNumber,'999,999,999,999,999.99')))
16       ,1
17       ,LENGTH(TRIM(DECODE(fNumber,0,'0.00',TO_CHAR(fNumber,'999,999,999,999,999.99'))))-3
18     ) INTO ReturnValue
19     FROM DUAL;
20   END IF;
21   
22   IF strType = '2' THEN --千分 两位小数点
23     SELECT TRIM(DECODE(fNumber,0,'0.00',TO_CHAR(fNumber,'999,999,999,999,999.99'))) INTO ReturnValue 
24     FROM DUAL;
25   END IF;
26   
27   IF strType = '5' THEN --千分 两位小数点 去掉.00
28     SELECT REPLACE
29     (
30       TRIM(DECODE(fNumber,0,'0.00',TO_CHAR(fNumber,'999,999,999,999,999.99')))
31       ,'.00'
32       ,''
33     ) INTO ReturnValue 
34     FROM DUAL;
35   END IF;
36   
37   --非千分
38   IF strType = '3' THEN --四位小数
39     SELECT TRIM(DECODE(fNumber,0,'0.0000',TO_CHAR(fNumber,'9999999999999999999999999.9999'))) INTO ReturnValue 
40     FROM DUAL;
41   END IF;
42   
43   IF strType = '4' THEN  --去掉.00
44     SELECT REPLACE
45     (
46     TRIM(DECODE(fNumber,0,'0.00',TO_CHAR(fNumber,'9999999999999999999999999.99')))
47     ,'.00'
48     ,''
49     ) INTO ReturnValue
50     FROM DUAL;
51   END IF;
52   dbms_output.put_line(ReturnValue);
53   return(ReturnValue);
54 end FnMoneyStyle;
55 
56 --function测试结果：
57 SELECT FnMoneyStyle(30000.123,'1') FROM DUAL--返回结果：30,000
58 SELECT FnMoneyStyle(30000.123,'2') FROM DUAL--返回结果：30,000.12
59 SELECT FnMoneyStyle(30000.123,'3') FROM DUAL--返回结果：30000.1230
60 SELECT FnMoneyStyle(30000.123,'4') FROM DUAL--返回结果：30000.12
61 SELECT FnMoneyStyle(30000.123,'5') FROM DUAL--返回结果：30,000.12