We have usually said that if you use a native query, you break query folding in Power Query. It is recommended to read the previous recipe first: 1 - Gremlin as a Stream.
Query folding is the ability for a Power Query query to generate a single query statement that retrieves and transforms source data. Happy Querying! This blog post is the 2nd from the series Gremlin Recipes. To fold proteins of larger size and to improve the folding yield of the small proteins as well, we take the. In its most basic form, replacing values in Power Query is easy. For more information, see Power Query query folding.
I had a requirement where the client wanted the capability to decide how much data to load from a SQL Server Query (TSQL). He looks at what native query is, what to consider when using it, and. You can see that the 'Filtered Rows' step was selected for Query Folding to improve performance. We also provide an anonymous lambda for the processing. If the option to 'View Native Query' is available (not grayed out) that step has been folded. In this example click on IDB to continue and OK. So, we can perform the different types of Query and can interact with the database at the grain of schema-free documents. The "View Native Query" option is greyed out, but of course this does not mean that query folding is not happening. Query folding guidance differs based on the model mode. Go to the Transform tab -> click on Replace Values. This would completely defeat the purpose of implementing. However, if you use Query Diagnostics, hidden away in the Data Source Query column of the detailed diagnostics query, you can see a SQL query with the WHERE clause you would expect: 1 ACCEPTED SOLUTION V-lianl-msft. All these foldable cases are restricted to small proteins (36 120 residues). Welcome to the June update! DirectQuery support generally available if the data source doesn't support folding, we have to read the entire data anyways, load it into temporary memory, then do filtering and load. Connect and share knowledge within a single location that is structured and easy to search. The Power Query function Top N will result in a number of rows to keep. You may break folding if you get too fancy and the Power Query engine cannot figure the SQL out, so be careful. Evaluates query against target using the parameters specified in parameters and the options specified in options. target provides the context for the operation described by query.
The output of the query is defined by target. I have shown how to disable the native database queries which not only helps when I am developing but also assists me when my Power.
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