Comments on: Crystal Reports: Using SQL Expression Fields

By: Carmen

Carmen — Thu, 14 Oct 2010 16:05:47 +0000

I have been using SQL expressions in various reports to pull out min/max date time values from a particular table but need to do something a little more complex. I am trying to display in a SQL expression field IP_FLWSHT_MEAS.MEAS_VALUE where IP_FLWSHT_MEAS.RECORDED_TIME = min(IP_FLWSHT_MEAS.RECORDED_TIME)for the corresponding hospital visit. I am hoping this makes sense as the examples above look to be from Epic’s Clarity data model. This type of request has been coming up frequently from users requesting reports and it would be great to be able to do so without creating a view every time. Is this possible?

By: Crystal Reporting in SalesLogix Using SQL Expressions - The Reporting Blog

Crystal Reporting in SalesLogix Using SQL Expressions - The Reporting Blog — Wed, 03 Jun 2009 17:35:37 +0000

[...] Obviously, I did not know where to start so I plugged in the words "SQL Expression Fields Crystal" into Internet Explorer and there were plenty of sites to lead me to the answers I needed. This is the link to the one I used the most http://www.cogniza.com/blog/?p=26 [...]

By: Craig Buchanan

Craig Buchanan — Mon, 12 Feb 2007 03:08:28 +0000

No, you can’t use a parameter in SQL Expression fields. You’ll need another approach. You may want to rewrite the report using a Command object. You will be able to use parameters and the scalar query in the SELECT clause.

By: Sylesh Soman

Sylesh Soman — Thu, 08 Feb 2007 22:21:24 +0000

HELLO,

IS THERE ANY WAY TO SEND A PARAMETER INTO THIS QUERY THAT IS CREATED IN THE SQL EXPRESSION FIELD.I AM NEW TO CRYSTAL REPORT…I CREATED A SQL EXPRESSION FOR ALL THE PRODUCTS…BUT I NEED IT TO BE FILTERED BY THE PARAMETER(PRODUCTS) THAT IS BEING PASSED INTO THE MAIN QUERY…

ie, i have select profit from product_table—-working
i need select profit from product_table where product={?product}

is there anyway to do this..

Thnks a Lot

By: Rosa Ramos

Rosa Ramos — Fri, 29 Sep 2006 07:15:31 +0000

Hi.
Please, you know the syntax of expressions SQL in Crystal Reports 7.

In Crystal 9 and 11 they work but not in Crystal 7, always it gives me syntax error in the first field of the SELECT

Ej: (DB: SQL Server)
(SELECT “TC_Value” FROM “Table_Conf”
WHERE “TC_Parameter” = ‘Path’)

By: Qry

Qry — Wed, 09 Aug 2006 03:25:34 +0000

cool! thx!

By: Craig Buchanan

Craig Buchanan — Mon, 24 Jul 2006 12:46:26 +0000

You may need to substitute single quotes for the double quotes. Try:

(
SELECT SUM(SALE_COST)
FROM TEST_TBL
WHERE (EA_SUBTYPE = ‘Hours’)
OR (EA_TYPE = ‘Labor’ AND EA_SUBTYPE = ‘ ‘)
)

By: LoanVi Tran

LoanVi Tran — Fri, 21 Jul 2006 16:31:10 +0000

Hi, I tried to write the following SQL expression for Crystal Report, but it didn’t work. Please help!

(
SELECT SUM(SALE_COST)
FROM TEST_TBL
WHERE (EA_SUBTYPE = “Hours”) OR
(EA_TYPE = “Labor” AND EA_SUBTYPE = ” “)
)

By: Tatterdemalian

Tatterdemalian — Thu, 09 Feb 2006 23:32:18 +0000

Nope, it still says “The column prefix ‘MainQueryTable1′ does not match with a table name or alias name used in the query.”

By: Craig Buchanan

Craig Buchanan — Thu, 09 Feb 2006 15:57:02 +0000

Try this in your SQL Expression (essentially adding a new instance of the payment table to the report):

(
SELECT Sum(payment)
FROM PaymentTable
WHERE id=MainQueryTable1.id
)

Otherwise, you can use a Command Object to contain the desired SQL, then use the CO as the sole ‘table’ in the report.