currently I am trying to create one application using Any point studio. But stuck here...
I am having two select query to fetch the data from two different tables of a single database and according to the request it will decide from which table the data will be fetched.
I'm able to create the dynamic query which will take the dynamic table name and column name. But, I wanted to take two different query. As the column name in the where clause is different for both.
please help me out...
Thanks
You should be able to use MEL expressions in the database connector by choosing "Dynamic" type select query. So you only have to put the correct clause on a string variable and reference it on the connector.
Anyway, I would not try that approach. I would place a "choose" flow control and two database connectors and decide which of them use base on your condition. I would use "Parametrized" type select query, it is more secure than using "Dynamic".
Best regards,
José
Related
Relative newbie to SQL here and I need help writing a query.
We use an application that uses SAP Crystal reports as it's reporting tool. In the application users are able to select the run parameters for the report, and these parameters are then passed to the report and inserted into the SQL query used to create the report.
For some reports we want to let the users decide how they want to group the reports using 3 options (Account, Manager and Broker) rather than having 3 versions of the report.
To avoid typing errors, I would to provide the 3 options as a list, which would appear in a drop down. Is there a way to do this in a query without creating records in a table?
Thank you
Simply create a parameter and enter the 3 values in the list of default values.
Here is a link to a web page explaining the process step-by-step: https://www.rklesolutions.com/blog/crystal-reports-p4
Sounds like you simply need to populate a dropDown control with a list of static values. But you didn't mention your programming language. Assuming this is C#:
ListItem item = new ListItem(itemText, itemValue);
dropdownlist.Items.Add(item);
I am attempting to create a sql statement in XE8 at runtime to search an oracle database based on the value in a textbox. I find multiple different ways that attempt to explain this online, but I am not understanding what it is asking.
I want to search a server based on a select statement and populate TDB components (labels only) based on the data. The furthest I have gotten is to get data populated, but the where
' ... somevalue = ' + textbox.text;
seems to have no effect.
What components do I need to make this happen? I am connected to the database, and it appears that I can get some kinda data out of it, but I can't seem to figure out how to filter the results. Obviously, I cannot create this sql statement at design time as the value of textbox.text will change depending on the user's input.
My error was in how to dynamically change what the data aware components got data as it would not always be the same. I had to manually go in and modify their datafield properties. Once I did this, my query functioned correctly.
Fist, let me say I know very little about SQL language and am trying to learn (albeit very slowly). I have created a database table with columns for
ECOREGION_ID
ECOREGION_NAME
SPECIES_NAME
CLASS
so that there is one row for each species name in each ecoregion. My end goal is to create a form in which I can enter in multiple species names and search for the ecoregions they share. For example, if I enter into the 4 different search boxes "Tiger", "Red Panda", "Sloth Bear", and "Rhino" it would bring up a list of all the Ecoregions in which these four species share. I am wondering a few things:
Is my data set up in the correct way in order to do this or is there a more efficient way to set i t up?
What statement should I use to create an sql statement to perform the search I want?
What is the technical term for what I am wanting to do? I have tried many different searches on different forums and can't seem to find what I am looking for, mostly because I probably don't know what to search, lol.
Thanks,
-Drew
You have ECORegion_ID and ECORegion_Name in the same table. I would suggest create a separate table to hold ECORegions. This table would have both an ID and Name. The search table would then only have the ECORegion_ID. This process is called normalization. It basically reduces redundant data in your database.
You are looking for a SELECT statement, which is used to pull data out of one or more tables. The statement has a WHERE option to restrict which rows you bring back and an IN expression as part of the WHERE to allow you to look for multiple keywords.
Search for Normalization to see why to put region name in a separate table. Look up SQL Select to get syntax for the select statement you should get off to a good start
I apologize if this is an easy one, but I can't find this on the web anywhere!
I have a list of tables and queries, and a full list of fields from each table and query.
I want to choose my fields in an Access form, and then, on another form, choose a query/table in one column (along with a field) and join it to a table/query in another column (along with the field.) My form for the joins would look like this:
Object1 Field1 Object2 Field2
and so on. I would want to be able to choose my fields through combo boxes, THEN make the SQL string dynamically. I can't use a where clause -- it has to be a join.
The problem is, the structure will change every time. Access gets funny about putting in parentheses. Also, if an object is chosen more than once, Access will want to join it (assuming I do it right) in a different manner than T-SQL.
Is there a way to write a query in T-SQL, and quickly convert to Access? Does anyone know the FROM clause algorithm Access uses to construct the FROM clause? I am stuck here, and I cannot find a solution to save my soul! Thank you in advance, David
Actually I have a new client & their Database has no standard naming conventions & the application is in classic asp.I have a form in which a form there are many values in the different textboxes, it it very difficult to trace the value come from which table.& also there is no erd.
I need a query from which I can get the table name with column name by giving Value.
Let's suppose I have a value having label name abc#= '6599912268'
& the new project has no ERD no standard of naming conventions... I need a fast way to know the abc# ='6599912268' is taking from which table & which column name.... like this the UI has many values which is time taken to trace manually
Is there any way to trace it?
The simple answer is no. There is no way to trace table/column it comes from by mere inspection of the value.
I suggest the following.
Find out what type of db your product is using. Where it is situatede, do you have access to it.
If you have access to the database, get to know the db structure. What each table is meant to store, the relationships etc. Speak to the db administrator or the business analayst to increase your knowledge on the product domain.
Once you have the db structure, try and compare the table to the page. Eg. The user details will most like be stored in a db table named 'Users' or 'Membership' Catch my drift?
Then have a look at the web sites source code. Look at the specific page you are at. Is the sql code embedded in the source code (asp page) or does it call a COM server or something similar? If you are "lucky" (and I say lucky for on the purpose of your problem that you are having) you fill find the sql code in the asp page.
If it calls a COM object or something similar, then you will have to dig up the source code for that, and that is most likely where you sql will reside.
There is no easy way to do this, you have to use a stored procedure to loop over all the tables in the database and search for the value, and it will probably take a while.
There's a stored procedure and examples here: Search all columns in all the tables in a database for a specific value. You'll see there are stored procedures for finding dates, strings, numbers.
Not possible, and If you search the column with the value, there is a possible chance that you get multiple columns with the same value, so how would you differentiate them and the same case is for the table.