How to change the number?

Question

1.00/5 (1 vote)

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SQL

i will try to after 4 decimal point?
DECLARE @tbl TABLE (val float)
INSERT INTO @tbl SELECT 12.19
INSERT INTO @tbl SELECT 13.92
INSERT INTO @tbl SELECT 14.47
INSERT INTO @tbl SELECT 18.025
INSERT INTO @tbl SELECT 18.3
INSERT INTO @tbl SELECT 17.79
INSERT INTO @tbl SELECT 18.13
INSERT INTO @tbl SELECT 15.245
INSERT INTO @tbl SELECT 12.485
INSERT INTO @tbl SELECT 11.365
INSERT INTO @tbl SELECT 18.26
INSERT INTO @tbl SELECT 15.44
INSERT INTO @tbl SELECT 19.13
INSERT INTO @tbl SELECT 15.59
INSERT INTO @tbl SELECT 28.695
INSERT INTO @tbl SELECT 29.35
INSERT INTO @tbl SELECT 15.27
INSERT INTO @tbl SELECT 15.895
INSERT INTO @tbl SELECT 26.51


SELECT *,((abs(val)*10000) - CONVERT(INT,(abs(val)*10000))),cast(val*power(10,4) as int),val*power(10,4)
from @tbl

What I have tried:

But only one number most of confusion

SQL

SELECT ((abs(cast(18.26 as float))*10000) - CONVERT(INT,(abs(cast(18.26 as float))*10000)))

Posted 24-Oct-18 20:34pm

kskumaran

Updated 25-Oct-18 23:45pm

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Comments

OriginalGriff 25-Oct-18 3:47am

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with. So we have no idea what number you want to change, or what you are trying to change it to ...
Use the "Improve question" widget to edit your question and provide better information.

jsc42 25-Oct-18 3:52am

I am not sure what you are trying to achieve. Are you trying to truncate numbers at 4 dec places or to display them with 4 dec places. Please tell us the expected output and the actual output.

I have tried your code in SQLServer and your 2nd col produces zeros for all values except for 18.26 which gives 2.91038304567337E-11 which is almost zero - this will be a rounding error. Float will always give inexact values as the binary value is only an approximation of the decimal value which is something you must be aware of when working with float values (in any language, not just SQL). All of the values will have rounding errors but some will be too small to display so they are shown as 0.

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itsmypassion · Answer 1 · 2018-10-25T23:46:00

Solution 1

You can try CAST

SQL

SELECT *,cast(((abs(val)*10000) - CONVERT(INT,(abs(val)*10000))) as Float), cast(val*power(10,4) as int),val*power(10,4)
from @tbl

Posted 25-Oct-18 23:46pm

itsmypassion

Comments

kskumaran 30-Oct-18 2:32am

SELECT *,ISNULL(ROUND((abs(val)*10000) - CONVERT(INT,(abs(val)*10000)),0),0), cast(val*power(10,4) as int),val*power(10,4)
from @tbl

kskumaran 30-Oct-18 2:33am

above this answer is correct