The table retrieves data from the table "Group" with 2 columns First key "GroupNumber" and GroupName"I am trying to create a sql query in Microsoft Access from a table with two columns that will works as below:
Based on the user's selection from the first column the query has to return the value of the second column, and based on the user's selection from the second column the query has to return the value of the first.
Any idea how is possible to express the user's selection in sql? Ty
Some more data would be useful. AT this moment, it is hard to understand what it is exactly you are trying to do.
However, you mention two different selecting actions that need to be done by the user, so two SELECT statements would work.
To return the value of the second column based on user selection of the first: SELECT second_column_value FROM table WHERE first_column_value = value_selected_by_user
To return the value of the first column based on user selection of the second:SELECT first_column_value FROM table WHERE second_column_value = value_selected_by_user
or you can use drop-down lists, if the situation allows
Try providing more data to get more useful answers.
Related
Given those relationships, how do I limit the choice of Leader in a given record in GroupResults to only those StudentResults.IDs, which have Class&Group set to the same value as in the ID field of that record without creating forms and using VBA?
If I assign SELECT StudentResults.ID, StudentResults.FullName FROM StudentResults; to the Row Source in [Leader], like this ,
I get all the records in the table to choose from, regardless of the [Class&Group] field value, like this .
How do I restrict the assignable records to only those that belong to the corresponding group?
I'd spent a very long time trying to find a way to run a parametrised SQL query to pass the [Class&Group] to the WHERE clause, but eventually had to give up.
Thank you very much for your help!
P.S. I do realise that this may or may not be more of an ms-access, rather than SQL question.
Tables are not designed to be user interfaces. Conditional comboboxes, validation, etc. work best on forms. Comboxbox lookup dropdowns are more an Access GUI convenience to show parent table indicators for key number values.
When queries are then run from such tables, these drop downs fields show to help us humans who naturally understand names and indicators rather than integer primary/foreign keys. So instead of Student: 1, we see Student: John Doe. In fact, such table field drop downs even helps generate the same comboboxes on Access forms and reports in advance to avoid the designer in building them upon clicking the form icons on ribbon.
However, for your needs consider adjusting combobox by showing the [Class&Group] field so the user can see or match the group of specific Leader with appropriate one for current record in Class column. See adjusted query and column count/heads.
Row Source: SELECT s.ID, s.[Class&Group], s.FullName FROM StudentResults s
Bound Column: 1
Column Count: 3
Column Heads: Yes
Also, if you want the Leader name to always show when table or query is opened instead of ID, reverse the order in query and change bound column:
Row Source: SELECT s.FullName, s.[Class&Group], s.ID FROM StudentResults
Bound Column: 3
Column Count: 3
Column Heads: Yes
I have a table of values in excel that I want to put into sql as a lookup table. the table looks like this:
the sql table looks like this:
having this in SQL, I now want to never use the excel file ever again.
I also need the ability to change the parameters, but some of them in the excel file were linked by merging the cells and thereby shared the same value, if it changed for one it changed for all.
for example: when I change Parameter B for Product 1, I need it to change it for Products 2, 3, 4, and 5 because they share the same cell in the excel table. And if I change parameter A for Product 2, It only changes for product 2 and 3. I am looking for a SQL Query solution. I have the ability to change the table structure as well.
Here goes my example query:
Update [Table] Set [Parameter_A] = '{new_parameter_tag}'
Where [product] = '{selected_product_tag}'
except I want to have the Where include all the rows that share the same cell from the excel table.
I want to be able to update the SQL table for multiple products at a time based on if they share the same cell for that parameter in the excel file.
here is my initial guess at an answer:
Select [{Parameter}],[Product],[Extra_column]
From [Table]
Where [Product] = '{selected_product}'
this returns one row and [Extra_column] that contains a grouping number shared by others in the same cell grouping. this then gets stored as {Extra_column}. then:
Update [Table] Set [{Parameter}] = '{new_parameter_value}'
Where [product] = '{selected_product}' Or [Extra_column] = '{Extra_Column}'
this requires two queries and also means that i need twice as many columns as i had before. I am looking for something a little more elegant.
This is SQL Server 2012 and the {} indicate a value that I am passing in form a script.
I ended up doing something similar to what I had above, the user enters the group they want to edit (it's pretty easy to pick out which one you want when viewing the table) as:
Update [table]
Set [{Parameter}]={NewValue}
Where [Extra_Column] = '{Extra_Column}'
I had to add three columns for the grouping indexes but over 43 parameters that doesn't add much to my table size. I did not take into account the fact that if I change a single parameter for a single product that would remove it from the "group" essentially for just that parameter, and later I would overwrite the changed value if I do a group change for that parameter. I could add in a check to only change values that match within that group but either way the user will have to be smart about what they do. luckily, they can see the table before they change it.
What would be the expression to create a calculated column in Table Example 2 called "SZODMAXCALC", that would contain the SZODMAXCALC from Table Example 1 given that the data from Table Example 1 falls between the dates (DTTMSTART and DTTMEND) within Table Example 2?
Maybe this is easier done on the SQL side that loads the data?
there is no way to create a calculated column that references a column in another table.
you will need to do a join either in Spotfire (via Insert...Columns)* or on the SQL-side of things (either via a view on your database or by creating a new information link in Spotfire).
the best method depends on your data structure, implementation, and desired results, so I'm not able to recommed there. take a look at both options and evaluate which one works best.
* NOTE that Spotfire cannot join based on a Calculated Column as a common key. that is, using your example, if [WELLNAME] is a calculated column, you cannot tell Spotfire the equivalent of SELECT wellname, ... FROM table_a LEFT JOIN table_b ON table_a.wellname = table_b.wellname.
the alternative is to Insert...Transformation and choose Insert New Calculated Column, and to join on that instead.
the reason for this is that calculated columns are very mutable; they could change frequently based on a user action. it would be inefficient to re-execute the join each time the column's contents changed. conversely, a "Transformation Calculated Column" is only updated when the data table is loaded.
I am using PyODBC to fetch some data, since I am not fetching all data in my table, I need to write a query which grabs only rows which have associated columns. For example my initial query is:
SELECT SRNumber FROM SO_SC_1 WHERE SRNumber LIKE '%1-%'
This returns the SRNumber values that I want.
Next I want to return the associated last edited user with this SRNumber. This column is named last_edited_user. What is the proper syntax to incorporate multiple queries into one for this scenario? Basically I would like to use the initial query and grab all associated data for each SRNumber.
You query all needed columns using their comma separated names
SELECT SRNumber, last_edited_user
FROM SO_SC_1
WHERE SRNumber LIKE '%1-%'
I have a requirement to display row values as column names in a data grid view. I want to get the store names into columns using sql select statement. (Please refer the attached image). I want user to enter some values under each column. So STORE 1, STORE 2, STORE 3 should displays as columns in datagrid view. Does anyone can help me to get this work?
while googling i found this can be done using PIVOT in SQL. But in this table i don't have any aggregate columns. Any help pls?
the result should be somthing like
You may know that your data only contains a single row for each pivoting column, but SQL Server has to construct a plan that could accommodate multiple rows.
So, use PIVOT and just use an aggregate that, if passed a single value, will return that same value. MIN() and MAX() fit that description (as does SUM if you're working with numeric data)
You may use specific function of dynamic pivot and pass your query with item count column.
You can use below link which provided you function and can easily show you expected output.
http://forums.asp.net/t/1772644.aspx/1
Procedure name:
[dbo].[dynamic_pivot]