在SQL中将数字转换为两位十进制数字

Question

I am having this query which show the output as numer number

SELECT  rlseamt  FROM ln01mast WHERE acno=214

I want to convert it to decimal amount for two digits ex:198.00

Answer 1

You can use Number format models to have desired output.

You can modify your query like this:

SELECT  TO_CHAR(rlseamt,'999D99')  FROM ln01mast WHERE acno=214

You should change the format model acrroding to the the length of NUMBER datatype, defined for rlseamt column. Reason being, if you have values like 1234 in this column, then using the above format model, will not give you correct output, and the output will be replaced by something like #### . So, you would have to change the format model to 9999D99

Answer 2

Use this document http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions181.htm

You can either use

SELECT  TO_CHAR(rlseamt,'999D99')  FROM ln01mast WHERE acno=214

or

SELECT  TO_CHAR(rlseamt,'000D00')  FROM ln01mast WHERE acno=214

second query will add a starting zero if the numbers before decimal is less than 3 characters.....

Answer 3

还有另一种方法，因为我无法使用此查询将零填充为零

SELECT  TO_CHAR(rlseamt,'9999999999999999999999D99')  FROM ln01mast WHERE acno=214