I'm quite new to SQL and generally can find my way with basic stuff, but this time I'm kind of stuck...
I'm trying to retrieve (and display) the different configurations of an online app that are stored in a MSSQL DB.
I have to look at the value of a certain table and column (let's call it "configName.id"), and depending on the value returned (negative, positive, NULL), I have to match it in different tables and display one of 3 options in the same column.
I tried using CASE, but I don't want to display 3 different columns; I want to query different tables, and display the results in a single column. The displayed column name should be "Configuration Name".
In basic algorithm language, this would be:
if (configName.id > 0)
-> Display the corresponding value from table "a"
if (configName.id < 0)
-> Invert the value returned to be positive, display the corresponding value from table "b"
else
-> Display "NULL" as results.
My challenge is that regardless of the results returned from any table, I must display it under my report column "Configuration Name".
Any help would be really appreciated, thanks!
It would be something like this
select coalesce(a.value, b.value) as value
from configname left join
a
on a.id = configname.id and configname.id > 0 left join
b
on b.id = abs(configname.id) and configname.id < 0;
Related
I have the following question!
I have a table like this:
Data Source
I want to create a field(i suppose it's a field) that i can take the apl_ids,
that have as service_offered some that i want.
Example from the above table. If i want the apl_ids that have ONLY the service_offered
Pending 1, Pending 2 and Pending 7.
In that case, I want to get the apl_id = "13" since apl_id = "12" got one more service that i don't need.
Which is the best way to get that?
Thank you in advance!
Add a calculated field which gives 1 for desired values and 0 for other values. Add another calc field with fixed LOD to apl_id to sum of calcF1. Filter all ids with values=3 only. I think that should work.
Else tell me I will post screenshots
You can create a set based on the field api_id defined by the condition
max([service_offering]=“Pending 1”) and
max([service_offering]=“Pending 2”) and
max([service_offering]=“Pending 7”) and
min([service_offering]=“Pending 1” or [service_offering]=“Pending 2” or [service_offering]=“Pending 7”)
This set will contain those api_ids that have at least one record where service_offering is “Pending 1” and at least one record with Pending 2 ... and where every record has a service offering of 1, 2 or 7 (I.e. no others)
The key is to realize that Tableau treats True as greater than False, so min() and max() for boolean expressions correspond to every() and any().
Once you have a set of api_ids() you can use it on shelves and in calculated fields in many different ways.
I'm using Google sheets, and I want to get the data from one sheet to another where I want only the columns with count > 1.
Let's say we have 3 columns A, B, and C. I tried the following (the first sheet name is "Form Responses 1"):
I thought about using a query in the second sheet as: =query('Form Responses 1'!A1:Z, "Select A having count (A) >1 union select B having count (B) >1 union select C having count (C) > 1"). But I got a parse error where it seems that union and having are not supported in google sheets query.
How can I achieve this (whether it's using query or any other Google sheets function that can work)?
More details:
The first sheet contains info about exercises conducted during a lecture and it gets its data from a Google Form (so the responses are fed in this sheet). Here is a screenshot of it:
Please note that the form is divided into sections. When the user selects the course, the attendance, the participation, and adds a comment, then they go to the next section, the next section will be based on the selected course, the newly opened section will have the exercise name and rating questions (the exercise name is a dropdown list with items that are prefilled and specific to the selected course). That's why, you can see that "exercise name" and "rate the exercise" columns are repeated because we have 2 sections in this form.
The second sheet should contain the data of a selected course only (either mobile dev or web dev) which can be achieved easily through a query with a where clause. But, in addition to that, it shouldn't contain the empty columns of "exercise name" and "rate the exercise" as they correspond to another section. So, it should have only one exercise name column and one rating column that correspond to the selected course. Here is a screenshot if we only use a query with where clause without removing the extra name and rating columns:
Here is a screenshot with the desired result:
Thanks.
why not use just:
=QUERY('Form Responses 1'!A1:Z, "select A,B,C,D,E,F,G where F is not null", 1)
Use "OR" condition
Eg:-
QUERY(Data!A:R,"select A, N, P where N>0 or P>0")
where A column has country and N, P columns have population values
Can I select a column based on another column's value being listed as a formula? So I have a table, something like:
column_name formula val
one NULL 1
two NULL 2
three one + two NULL
And I want to do
SELECT
column_name,
CASE WHEN formula IS NULL
val
ELSE
(Here's where I'm confused - How do I evaluate the formula?)
END as result
FROM
table
And end up with a result set like
column_name result
one 1
two 2
three 3
You keep saying column, and column name, but you're actually talking about rows, not columns.
The problem is that you (potentially) want different formulas for each row. For example, row 4 might be (two - one) = 1 or even (three + one) = 4, where you'd have to calculate row three before you could do row 4. This means that a simple select query that parses the formulas is going to be very hard to do, and it would have to be able to handle each type of formula, and even then if the formulas reference other formulas that only makes it harder.
If you have to be able to handle functions like (two + one) * five = 15 and two + one * five = 7, then you'd be basically re-implementing a full blown eval function. You might be better to return the SQL table to another language that has eval functions built in, or you could use something like SQL Eval.net if it has to be in SQL.
Either way, though, you've still got to change "two + one" to "2 + 1" before you can do the eval with it. Because these values are in other rows, you can't see those values in the row you're looking at. To get the value for "one" you have to do something like
Select val from table where column_name = 'one'
And even then if the val is null, that means it hasn't been calculated yet, and you have to come back and try again later.
If I had to do something like this, I would create a temporary table, and load the basic table into it. Then, I'd iterate over the rows with null values, trying to replace column names with the literal values. I'd run the eval over any formulas that had no symbols anymore, setting the val for those rows. If there were still rows with no val (ie they were waiting for another row to be done first), I'd go back and iterate again. At the end, you should have a val for every row, at which point it is a simple query to get your results.
Possible solution would be like this kind....but since you mentioned very few things so this works on your above condition, not sure for anything else.
GO
SELECT
t1.column_name,
CASE WHEN t1.formula IS NULL
t1.val
ELSE
(select sum(t2.val) from table as t2 where t2.formula is not null)
END as result
FROM
table as t1
GO
If this is not working feel free to discuss it further.
I need to build a form where one field (Unplanned Amount) will only populate with data if another field (status) equals a certain value ("not in workflow"). If the status equals anything else, Unplanned amount field would be blank.
The data is coming from three different tables:
Table 1) AccountNum
Table 2) DocNum, DocAmount, DocStatus
Table 3) CommitAmount
The value in CommitAmount will always equal DocAmount, but the value of DocAmount doesn't have to equal the value of the CommitAmount if it's "unplanned."
I tried putting the data into a query and using the following code on my form to no avail:
If Me.DocStatus = "Not in workflow" Then
Me.DocAmount = Null
Else
Me.DocAmount = [forms]![form2]![DocAmount]
End If
Does anyone know how to go about making a query-based form or report that allows what I've described above to take place? Or maybe this should not be done via a query?
Thanks!!
Put the IF statement into to data source for me.docamount
OR use a case statement in the query itself
select case docstatus when 'Not in workflow' then null else docamount end
I feel stupid asking this, but I really need an excample on how to get a value of a field in one table (in the end in my report) depending on a value of a field from an other table in Access.
So I have (for excample) a table:
Products and in my report I do a formule using the value of price (field of Products) and adding to that I must have the value of the field VAT-Type (a nummeric var, in the table VATS) depending on what is there in the record (of the one in the table Products) in the field VAT-Sort, also a nummeric var that must meet one of the values used in the field VAT-Type).
So in the report I must have something like:
Product: X Count Price'=(price+21%)'
where 21% comes from the dependensy between the field VAT-Type and VAT-Sort.
I know I can do something like result=select 'VAT-Sort' from 'VATS' WHERE 'VAT-Sort' = or equals 'VAT-type'
But how do I use it in a report of Access to get the right result?
You can use DLookUp:
Numeric data type:
DlookUp("Value","Vats","Vat_Type=" & Vat_Sort)
Text data type:
DlookUp("Value","Vats","Vat_Type='" & Vat_Sort & "'")
Or you can base your report on a query, say:
SELECT Value, Other, Field, names FROM Products
LEFT JOIN Vats
ON Products.VAT_Sort = Vats.Vat_Type
Edit re comments