Report Slow to render with expressions/formulas

Hi, using Report builder 3.0 to view/print transactional documents, eg invoices and orders.
I use table matrix (Tablix) to display the products dataset.
the tablix only has 1 row that just repeats the product information, with 6 columns.
I have simple IIF expressions in about 4 of the columns, yet these expressions slow down the report rendering dramatically.
eg: =IIf(Fields!part.Value > ".", Fields!ordqty.Value, " ")
also I had an expression to change the backgroundColor on every 2nd row:
=IIf(RowNumber(Nothing) Mod 2 = 0, "Gainsboro", "Transparent")
both of these expressions add so much time to the rendering, if i remove them, then i have a PDF rendered in about 10 secs for a tablix filled with about 300 lines.. otherwise its up around 35 seconds..
is there any optimisation that I can apply to keep the expressions and speed?
thanks
Poy

Is that possible to add this expression in T-SQL? BTW, how long the report (T-SQL or stored procedure) is running?
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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A: How to inlcude all records in a report, with a formula result of 0 or >0?

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Hey Flora,
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Really hoping someone can please help me out as I am very new to Crystal Reports.
We use Maximizer CRM and we have been in need of some custom reports to rule out risk for regulators. I contacted Max and they suggested the only possible way is to create through Crystal. Its been almost one month already and I still cannot for the likes of me get this report operating properly. I have been inside and out on all sorts of forums, posted topics but no luck! So I will give it one more attempt in hopes that one of you geniuses can show me the way.
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MattRollings wrote:
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Willing to move some databases into Microsoft SQL Server 2012 (2014) Express LocalDB, I have tryed to map some reports on that database.
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Don,
I did not want you to think that I am not willing to change anything...
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Regards.

Report Slow to render with expressions/formulas

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