I am facing problem in writing Azure Easy Table Script.
In read function i am performing select operation to fetch the data from TWO different table. I am also performing JOIN operation in that select query.
Please Help.
Help Appreciated.
Code Snippet is given Below :
todoFetchQuery = "SELECT todo.*,abc.firstName ,abc.middleName, abc.lastName from Todo LEFT OUTER JOIN student ON (todo.to_id = abc.id) where tea_id = '" + context.req.query.teaRecordId + "'";
The proper way to do what you want is to create an SQL VIEW that is the combination of the tables. See the following for a walk-through of using an existing SQL table and a view that supports all the fields necessary. https://adrianhall.github.io/develop-mobile-apps-with-csharp-and-azure/chapter3/server/#using-an-existing-sql-table
In your case, you create the view that shows your data - once the view works, you can just use a regular table controller that is using the view instead of the table to project into Azure Mobile Apps client SDKs and everything will "just work".
Related
As the Title says, is it able to query object definition of the view in Databricks using SQL, especially for Azure Databricks?
like when using SQL Server, I'm able to query the view definition using function OBJECT_DEFINITION or Stored Procedure sp_helptext to display the SELECT statement within Views.
I'm looking all over the internet, don't find one that explains about this. May be there isn't an option?
thanks.
It's maybe not very obvious, but you can use SHOW CREATE TABLE SQL command for that - it works for both tables & views. For example if I have view as following:
create view if not exists tacls.tbl1_view as
select * except(grp) from tacls.tbl1;
then I can get definition with
show create table tacls.tbl1_view
the definition will be in the createtab_stmt column:
I am learning pl/sql. I want to ask a question for importing excel files.
I create a table after that import data from excel nearly 100 rows.
I wonder how can i see this query basic like;
insert into table_name (column1,colum2,...,columnn )
values (value1, value2, ... , value n); and other 100 rows..
Sincerely
I'm not sure whether there is a feature within Oracle engine itself, but I can think of two ways to get those queries:
1. Use Oracle SQL Developer (Or another GUI with the same features) :
Oracle SQL Developer (Download link here) is a free tool developed by Oracle to interact with the database. Add the connection for your database and connect to it, then follow these guidelines carefully to generate your insert script.
2. Use v$sql (Experimental) :
Right now I have no access to an Oracle database to check this, but theoretically, if the database is a development/training one, there should not be a lot of activities and queries inside, so you can query the v$sql table to find the last 100 (or whatsoever) queries:
SELECT SQL_FULLTEXT FROM V$SQL WHERE ROWNUM < 1000 ORDER BY FIRST_LOAD_TIME desc;
Check for the ones starting with INSERT INTO {THE_TABLE_WHICH_HAS_IMPORTED_DATA} to find your insert lines.
As I mentioned, this method is quite experimental and might confuse you, so I strongly suggest using Oracle SQL Developer.
I have a query like;
SELECT
*
INTO [documentdb]
FROM
[iothub]
TIMESTAMP BY eventenqueuedutctime
I need to use * because data is dynamic and dont have specific schema. Problem is Iothub system information data is written to documentdb in this query. Is there any way to exclude Iothub system information data?
Thanks.
This is not possible currently but this will be possible in Job Compatibility Level 1.2 in near future. For now, one workaround is that you could create a post create trigger in Cosmos DB to remove this property from the document.
To answer your question, Azure stream analytics service doesn't have an in-built support for excluding columns from dynamic data (iothub information). But, we can achieve this by using UDF. Here is more info on UDF.
UDF can help us in deleting the column from input data and returning us the updated json.
There are two steps basically to achieve this:
Create a JavaScript UDF.
Go to functions from left hand side navigation (below inputs).
Click on Add --> JavaScript UDF.
Give a function alias = removeiothubinfo
keep output type - any.
copy paste following code into function definition.
function main(input) {
delete input['IoTHub'];
return input;
}
Click on Save
Update query
Go to query mode and copy paste the following query :
WITH NewInput AS
(
SELECT
udf.removeiothubinfo(iothub) AS UpdatedJson
FROM
[iothub]
)
SELECT
UpdatedJson.*
INTO
[documentdb]
FROM
NewInput
Click on Save
I suggest you to test your query before running the job by uploading a sample file containing similar structure for json.
Edited
Also, even in job compatibility level 1.2 there has been no additional functionality to achieve this. Check this out for more info.
As #chetangm said in his answer, no such filtering mechanism is supported in ASA so far. Yes, you could use create trigger in Cosmos db, however it need to be triggered in sdk code or REST API. It won't be triggered automatically.
I provide you with another workaround that using Azure Function Cosmos DB Triggered. It could be executed when data is added to or changed in Azure Cosmos DB. You just need to remove the fields you don't want in the function code.
My question is pretty simple. I am working on Kentico 9 with its SQL Server database which contains several tables which had been added directly from the SQL Management Studio by an external contractor. The fact is that those tables are being used to store custom content which will be displayed for a site, but, in the code they don't have the code for making queries. I mean, they don't have Info and Provider classes.
https://docs.kentico.com/display/K82/Retrieving+database+data+using+ObjectQuery+API
According with this, all tables into the Kentico database can be accessed by invoking methods on these classes, but I don't have it this time.
Something like this, it will not work if I use my table name:
var user = UserInfoProvider.GetUserInfo("administrator");
var items = CustomTableItemProvider.GetItems("MyTable")
.TopN(10)
.WhereEquals("ItemCreatedBy", user.UserID)
.OrderBy("ItemCreatedWhen");
My question is:
can I query any table by its name?
One last thing:
I cannot declared those table as "custom table" because it seems to be a bug in the CMS.
Or you can pull data using your own SQL query:
var ds = ConnectionHelper.ExecuteQuery("select ....", null, QueryTypeEnum.SQLQuery);
Nevertheless I would recommend to create a custom class inside a custom module (much more robust than custom tables) instead and use the generated Info and InfoProvider classes to get and manipulate data.
I think an object has to be registered within the system (created through Kentico UI or API) in order to be pulled from DB with object query.
So I'd choose one of the following options:
Use Entity Framework or something similar to work with that data
Create appropriate custom tables or even custom module and push data there. Not sure why you can't create a custom table... What is an error you're getting?
If you need to present data on the UI only (without processing on the back end) - use just custom queries
Hope this helps.
If you are accessing in code then you could do it the good old fashioned way. If you want to pull data from the database to display on the website you could also do so by creating a custom query and using a transformation to display the fields, then use a repeater on the page to display the transformed data. Alternatively you can use a SQL datasource with a basic repeater, but you still have to create a transformation to display the data. Both methods allow you to access the data in the tables from within the CMS UI, no need to touch any code behind.
If your objective is to read data from these database tables to transform on webpage e.g. using CMS Repeater webpart, you can simply create custom query(s) in Kentico itself and load data using it. You can find the detail here on how to create custom custom queries and load data using it.
On the other hand you can also write your custom classes and define the custom methods where you can pull data using your own SQL query like this:
var ds = ConnectionHelper.ExecuteQuery("select ....", null, QueryTypeEnum.SQLQuery);
Lastly I don't think there should be any issue to create custom table instead of those direct DB tables, only thing we have to ensure code name of custom table should be unique means don't try to use exact same name because it'll cause exception due to same table name already exist in DB. You can please share exception you getting while creating custom table so that I can help you out further.
When Importing data to an Index in Azure Search, from SQL (progrematically not through the interface), Is there a way to add Query to filter the data come from the SQL table ?
Looking at the REST API documentation for Create Data Source, as of today it is not possible to define a query to filter the data that populates an index.
However I read somewhere that you can create a View and use that as the data source for populating the index. However when using a view, you will not be able to use SQL Integrated change tracking for change / deletion detection. However, you will still be able to use High Water Mark change detection and Soft Delete Column deletion detection.
Also, please vote for this UserVoice suggestion to request adding support for query parameter.