CR Parameter for Null and empty string

I have issue with a parameter in CR XI R2 ver.

Report has several fields and several parameters.
One of Parameter is used against a field that could have next values:
 Full,
Three quarter full,
Half full,
One quarter full.
Unknown.

Problem is that this field could have value Null and it could be empty too.

Case is more complicated as user wants to show particular record even if this field do not have value it means if record for this field has value Null or is empty and show on report as  Unknown.
It means that Unknown actually covers three values first sting: Unknown ,second: Null  and thired  empty string.

Any Idea how to do this?
TarasAsked:
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mlmccConnect With a Mentor Commented:
Your question was how to select the records you wanted.  To convert the field to UNKNOWN you need a formula

If IsNull({Field3}) OR {Field3} = "" then
     "Unknown"
Else
     {Field3}

mlmcc
0
 
mlmccCommented:
SOmething like


(
(
{?Parameter} = "Unknown"
AND
(
IsNull({Field}
OR
{Field} = ""
)
)
OR
{?Parameter} = {Field}
)

mlmcc
0
 
TarasAuthor Commented:
What is with bracket after IsNull
(
(
{?Parameter} = "Unknown"
AND
(
IsNull({Field})<<<<
OR
{Field} = ""
)
)
OR
{?Parameter} = {Field}
)
0
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mlmccCommented:
Database felds and Crystal objects  are inserted with { } around them.

mlmcc
0
 
TarasAuthor Commented:
mlmc.
Count brackets opened and count brackets closed.????
something is missing.
0
 
mlmccCommented:
What error are you getting?

Can you copy and paste your formula?

mlmcc
0
 
TarasAuthor Commented:
Before I had.

{Field1}  = {?Par1} and
not {Field2} and
{field3}= {?Par3} and
{field4} in {?Date From:} to {?Date To:} and
{field5} in{?Amount_From:}to {?Amount_To:} and
{field6} = {?Par6} and
{field7} = "" and
{field8} = {?Par8} and
{field9} = {?Par9}



Now I have as you sugested

{Field1}  = {?Par1} and
not {Field2} and


(
(
{?Par3} = "Unknown"
AND
(
IsNull({field3}
OR
{field3} = ""
)
)
OR
{?Par3} = {field3}
)
and


{field4} in {?Deadline Date From:}to{?Deadline Date To:} and
{field5} in{?Amount_From:}to {?Amount_To:} and
{field6} = {?Par6} and
{field7} = "" and
{field8} = {?Par8} and
{field9} = {?Par9}

I am geting error missing ")"
0
 
mlmccCommented:
You are missing the ) on the IsNull

IsNull( {Field1} )

mlmcc
0
 
TarasAuthor Commented:
It is showing them now but not as "Unknown"  just as empty fileds.
I need to show:  empty, null and Unknown as Unknown in report???

I have question regarding this approach.

As parameter work on base to exclude all other records if they do not have parameter value.
I have users that sometimes ask for parameter for a filed to be present as option but not exclude records that have no entry or Null in that filed. They still want to see them beside selected parameter fileds.

With your suggestion is this way that I can apply this option on any filed that has parameter in report, and it will pull empty or Null filed value  out,  beside selected values for parameter filed?

Do I sound confused.
0
 
TarasAuthor Commented:
mlmcc :-)
thanks a lot.
I will post another question for rest.
0
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