1. Ben Antwi
  2. Valentina Reports ADK
  3. 火, 4月 12 2022, 04:18 PM
  4.  メールで購読
Valentina is a great reporting tool but I'm still finding it difficult to search a record from sqlite database with python. Please I need help
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Sergey Pashkov 承諾済みの回答
Hello Ben,

Does this report work in Valentina Studio and problem only with python?
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Ben Antwi 承諾済みの回答
In Valentina Studio it works fine with just producing a record using a parameter for that row.
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Ben Antwi 承諾済みの回答
I want to run the sql query example below to enable the user to type in any item_ID the user want , so that sql statement will return the exact record of the item_Id typed by the user.


SELECT item_Id, FROM permanent_staff WHERE staff_no=? ''',([Search_Id])
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Ben Antwi 承諾済みの回答
I want to run the sql query example below to enable the user to type in any item_ID the user want , so that sql statement will return the exact record of the item_Id typed by the user.


SELECT item_Id, FROM items WHERE item_Id=? ''',([Search_Id])

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Ben Antwi 承諾済みの回答
@ Sergey Pashkov Please do you understand my logic?
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Sergey Pashkov 承諾済みの回答
So you defined a parameter and used it in a query that you created in the Valentina Studio.

We have added a method to set report’s parameters in python:
report.setParameterValue( ‘param1’, ‘value1’)
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Ben Antwi 承諾済みの回答
This is original table I have below in the image
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Ben Antwi 承諾済みの回答
I have set parameter in patameter Tab as pitem_id and Default Value =4.

This is the query in the Valentina Studio:


SELECT item_id, item_name, item_type from items WHERE item_id=$P(pitem_id)
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Ben Antwi 承諾済みの回答
The result from the test Tab is as the image below
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Ben Antwi 承諾済みの回答
I don't want to change my parameter and Default Value all the time when I want to retrieve a record from the table. Please is there a way to set the parameter and Default Value one time to get all records when an input field requires a record ?
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Sergey Pashkov 承諾済みの回答
In Python?
You use setParameterValue to set an actual value:

report = project.report(...
report.setParameterValue( 'pitem_id','4' )
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Ben Antwi 承諾済みの回答
I want to use a search field like the image below to search in my application , so is it possible to use

report.setParameterValue( 'pitem_id','4' )
?
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Sergey Pashkov 承諾済みの回答
Yes, that's correct.
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Ben Antwi 承諾済みの回答
what if I want to get say last record in my table , please what Default Value should I use?
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Ben Antwi 承諾済みの回答
Assuming I don't know the length of item_id column and I want to get the last item_id in the items table, Please what parameter should I set?
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Sergey Pashkov 承諾済みの回答
For example, you can execute sql query with max function to get the last ID if they are sequential
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Ben Antwi 承諾済みの回答
Ok, that's great!
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Ben Antwi 承諾済みの回答
Sorry I'm still confused, If a specific parameter Value for example

report.setParameterValue( 'pitem_id','4' )
is set. Meaning after I package the app as .exe I can only search for the record with parameter value of '4'. But I would like to search for any other record. So is there a say a variable that could hold all the parameter values one time?
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Sergey Pashkov 承諾済みの回答
Store the necessary value in a variable and pass it

report.setParameterValue( 'pitem_id', paramValue )
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Ben Antwi 承諾済みの回答
Ok , so can I set the parameter name and parameter value in Valentina Studio Pro as in the image below right?





and pass same parameter Value variable name in python as follows?


report.setParameterValue( 'pitem_id', paramValue )
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