Question

Multiple Schemas...exact data structure

Asked by: erpeters

I am reporting against Maximo 4.0.1 data using Crystal 9 Advanced...I have written a report with subreports against one schema in the database (in Maximo each schema houses one facility)...I need to point the report to different schemas but am unable to do so without changing the location of each table, one at a time, including subreport tables...is there any way to set the schema using a parameter or SQL expression???

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Asked On
2003-12-16 at 10:26:51ID20827388
Tags

multiple

,

schemas

,

database

,

data

Topic

Crystal Reports Software

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Answers

 

by: mlmccPosted on 2003-12-16 at 10:35:38ID: 9951197

Not that I am aware of.

You can run the report from an application and set the locations from the application.

mlmcc

 

by: EwaldLPosted on 2003-12-16 at 13:02:13ID: 9952164

i have no idea about maximo, but when you select the table in the datasource, do you get the option "add command"? if so, you could enter some sql script in here that prompts you for the relevant schema and then return the appropriate data. this would be rather tricky though.

alternatively you could create a main report without subreports, insert the report you are interested in multiple times as subreports, but always with a different schema as datasource. then you can create a parameter in the main report, where the end user selects which subreport should be shown, and the others can be conditionally suppressed. however, subreports cannot have subreports, so you would have to change your report deisgn for this.

 

by: _TAD_Posted on 2003-12-16 at 13:29:32ID: 9952363



Can you create an ODBC connection against your Maximo data?

ODBC connections are (in my opinion) the best way to do most reporting.

Many people will protest and say that ODBC connections are a lot slower.  Admittedly ODBC is slower, but not nearly to the extent that most people think

Looking on the web you can find all kinds of benchmark tests I found one recently that showed an ODBC making a connection and a query over 28,000 times in one hour while a direct OLEDB made the same connection and query approximately 29,000 times in 1 hour.

Doing the math you find that you can connect and query a database using ODBC 7.78 times every second while using OLEDB you can only connect and query the same database 8.05 times a second.

Not much of a difference if you ask me.  Defiantely worth the time loss in exchange for extreme flexibility.

 

by: AnnetteHarperPosted on 2003-12-17 at 07:47:55ID: 9957354

Enlarging on one of EwaldLs suggestions, you can do this if you use a SQL Command for the data source. Write your SELECT statement in the SQL Command dialog as required for your report, except create a string parameter and use that in place of the schema name like this.

SELECT ...
  FROM {?Schema}.TableName
...

Parameter values in SQL Commands are just plugged into the command string before the statement is sent to the database, so the database will just see the result after variable substitution.

Another option is to create a stored procedure.

 

by: mpaulagainPosted on 2003-12-19 at 00:53:52ID: 9970745

I would recommend the same as Anette suggested.
SELECT ...
  FROM {?Schema}.TableName or
SELECT ...
  FROM {?Schema}.Stored procedure name.

Schema name can be kept in configuration files and read frm.
martin

20120131-EE-VQP-002

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