I got table with 2 IDs. I'm using parametrs as filters.
eg.
| ID | DIFF_ID |
| ----| ------ |
| 1 | null |
| 2 | 3 |
| 3 | null |
...
As you can see Diff_ID has the same int as ID and I need to use DIFF_ID to show other values in table by using parametrs eg.
case when $P{aba} is true then DIFF_ID (...) = ID(?) end
if the paramter 'aba' is true then use DIFF ID as base but show up as ID.
I'm expecting DIFF_ID appear in ID column if the parameter is true.
Related
Think I have a table with two fields: ID and State. State value (that is boolean) can be 0 or 1. ID isn't unique so the table looks like this:
ID | State |
-----------------
1 | true |
-----------------
1 | false |
-----------------
2 | false |
-----------------
3 | true |
-----------------
1 | true |
Now, I want to count every rows group by ID field and have State as two different columns in resultset. So it should look like this:
ID | TrueState | FalseState |
------------------------------------
1 | 2 | 1 |
------------------------------------
2 | 0 | 1 |
------------------------------------
3 | 1 | 0 |
How to do that?
This is a pivot query, which mysql doesn't support. The workarounds get ugly fast, but since you're only going to be generating two new columns, it won't be horribly ugly, just mildly unpleasant:
SELECT SUM(State = True) AS TrueState, SUM(State = False) AS FalseState,
SUM(State is NULL) AS FileNotFoundState
...
Basically state = true will evaluate to boolean true/false, which MySQL will type-cast to an integer 0 or 1, which can them be SUM()med up.
I am having a problem creating VIEWS with Snowflake that has VARIANT field which stores JSON data whose keys are dynamic and keys definition is stored in another table. So I want to create a VIEW that has dynamic columns based on the foreign key.
Here are my table looks like:
companies:
| id | name |
| -- | ---- |
| 1 | Company 1 |
| 2 | Company 2 |
invoices:
| id | invoice_number | custom_fields | company_id |
| -- | -------------- | ------------- | ---------- |
| 1 | INV-01 | {"1": "Joe", "3": true, "5": "2020-12-12"} | 1 |
| 2 | INV-01 | {"2":"Hello", "4": 1000} | 2 |
customization_fields:
| id | label | data_type | company_id |
| -- | ----- | --------- | ---------- |
| 1 | manager | text | 1 |
| 2 | reference | text | 2 |
| 3 | emailed | boolean | 1 |
| 4 | account | integer | 2 |
| 5 | due_date | date | 1 |
So I want to create a view for getting each companies invoices something like:
CREATE OR REPLACE VIEW companies_invoices AS SELECT * FROM invoices WHERE company_id = 1
which should get a result like below:
| id | invoice_number | company_id | manager | emailed | due_date |
| -- | -------------- | ---------- | ------- | ------- | -------- |
| 1 | INV-01 | 1 | Joe | true | 2020-12-12 |
So my challenge above here is I cannot make sure the keys when I write the query. If I know that I could write
SELECT
id,
invoice_number,
company_id,
custom_fields:"1" AS manager,
custom_fields:"3" AS emailed,
custom_fields:"5" AS due_date
FROM invoices
WHERE company_id = 1
These keys and labels are written in the customization_fields table, so I tried different ways and I am not able to do that.
So could anyone tell me if we can do or not? If we can please give me an example so it would really help.
You cannot do what you want to do with a view. A view has a fixed set of columns and they have specific types. Retrieving a dynamic set of columns requires some other mechanism.
If you're trying to change the number of columns or the names of the columns based on the rows in the customization_fields table, you can't do it in a view.
If you have a defined schema and just need to grab dynamic JSON properties, you may want to consider looking into Snowflake's GET function. It allows you to get any part of a JSON using a string for the path rather than using a literal path in the SQL statement. For example:
create temp table foo(v variant);
insert into foo select parse_json('{ "name":"John", "age":30, "car":null }');
-- This uses a literal path in the SQL to get to a JSON property
select v:name::string as first_name from foo;
-- This uses the GET function to get the value from a path in a string
select get(v, 'name')::string as first_name from foo;
You can replace the 'name' in the second parameter of the GET function with the value stored in the customization_fields table.
In SF, You will have to use a Stored Proc function to retrieve the dynamic set of columns
I have table which consist of 35,000 records in which half of the rows have name as null value
If the field has null value, i want to update the field with the value of username.
Can anyone help me with this ?
This is sample table
name | username | idnumber | type
----------------------------------------------
-- | jack | 1 | A
Mark | Mark | 2 | B
-- | dev | 3 | A
After update i want it to look like this
name | username | idnumber | type
----------------------------------------------
jack | jack | 1 | A
Mark | Mark | 2 | B
dev | dev | 3 | A
You seem to want:
update t
set name = username
where name is null;
Note that -- is not a typical representation of NULL values. You might consider <null> for instance.
I want to get data in a single row from two tables which have one to many relation.
Primary table
Secondary table
I know that for each record of primary table secondary table can have maximum 10 rows. Here is structure of the table
Primary Table
-------------------------------------------------
| ImportRecordId | Summary |
--------------------------------------------------
| 1 | Imported Successfully |
| 2 | Failed |
| 3 | Imported Successfully |
-------------------------------------------------
Secondary table
------------------------------------------------------
| ImportRecordId | CodeName | CodeValue |
-------------------------------------------------------
| 1 | ABC | 123456A |
| 1 | DEF | 8766339 |
| 1 | GHI | 887790H |
------------------------------------------------------
I want to write a query with inner join to get data from both table in a way that from secondary table each row should be treated as column instead showing as multiple row.
I can hard code 20 columns names(as maximum 10 records can exist in secondary table and i want to display values of two columns in a single row) so if there are less than 10 records in the secondary table all other columns will be show as null.
Here is expected Output. You can see that for first record in primary table there was only three rows that's why two required columns from these three rows are converted into columns and for all others columns values are null.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| ImportRecordId | Summary | CodeName1 | CodeValue1 | CodeName2 | CodeValue2 | CodeName3 | CodeValue3 | CodeName4 | CodeValue4| CodeName5 | CodeValue5| CodeName6 | CodeValue6| CodeName7 | CodeValue7 | CodeName8 | CodeValue8 | CodeName9 | CodeValue9 | CodeName10 | CodeValue10|
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| 1 | Imported Successfully | ABC | 123456A | DEF | 8766339 | GHI | 887790H | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL | NULL |
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Here is my simple SQL query which return all data from both tables but instead multiple rows from secondary table i want to get them in a single row like above result set.
Select p.ImportRecordId,p.Summary,s.*
from [dbo].[primary_table] p
inner join [dbo].[secondary_table] s on p.ImportRecordId = s.ImportRecordId
The following uses Row_Number(), a JOIN and a CROSS APPLY to create the source of the PIVOT
You'll have to add the CodeName/Value 4...10
Example
Select *
From (
Select A.[ImportRecordId]
,B.Summary
,C.*
From (
Select *
,RN = Row_Number() over (Partition by [ImportRecordId] Order by [CodeName])
From Secondary A
) A
Join Primary B on A.[ImportRecordId]=B.[ImportRecordId]
Cross Apply (values (concat('CodeName' ,RN),CodeName)
,(concat('CodeValue',RN),CodeValue)
) C(Item,Value)
) src
Pivot (max(value) for Item in (CodeName1,CodeValue1,CodeName2,CodeValue2,CodeName3,CodeValue3) ) pvt
Returns
ImportRecordId Summary CodeName1 CodeValue1 CodeName2 CodeValue2 CodeName3 CodeValue3
1 Imported Successfully ABC 123456A DEF 8766339 GHI 887790H
I have a dataset which looks like so
ID | PName | Node | Val |
1 | Tag | Name | XBA |
2 | Tag | Desc | Dec1 |
3 | Tag | unit | Int |
6 | Tag | tids | 100 |
7 | Tag | post | AAA |
1 | Tag | Name | XBB |
2 | Tag | Desc | Des9 |
3 | Tag | unit | Float |
7 | Tag | post | BBB |
6 | Tag | tids | 150 |
I would like the result in my report to be
Name | Desc | Unit | Tids | Post |
XBA | Dec1 | int | 100 | AAA |
XBB | Des9 | Float | 150 | BBB |
I have tried using a SSRS Matrix with
Row: PName
Data: Node
Value: Val
The results were simply one row with Name and next row with desc and next with unit etc. Its not all in the same rows and also the second row was missing. This is possibly because there is no grouping on the dataset.
What is a good way of achieving the expected results?
I would not recommend this for a production scenario but if you need to knock out a report quickly or something you can try this. I would just not feel comfortable that the order of the records you get will always be what you expect.
You COULD try to insert the results of the SP into a table (regular table, temp table, table variable...doesn't matter really as long as you can get an identity column added). Assuming that the rows always come out in the correct order (which is probably not a valid assumption 100% of the time) then add an identity column on the table to get a unique row number for each row. From there you should be able to write some math logic to "group" your values together and then pivot out what you want.
create table #temp (ID int, PName varchar(100), Node varhar(100), Val varchar(100))
insert #temp exec (your stored proc)
alter table #temp add UniqueID int identity
then use UniqueID (modulo on 5 perhaps?) to group records together and then pivot