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schdef's avatar
schdef
Frequent Visitor
9 years ago
Solved

Parameterized SQL Query with query folding

I have a table loaded to my data model containing IDs. I want use these IDs to filter another query connecting to a SQL table. I tried to merge the SQL query with the ID table but then the query does not get folded as it should (which is a problem as my SQL source has millions of rows). Any practice that makes sense thinking of performance in particular... Thxs much!!

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  • Anonymous's avatar
    Anonymous
    9 years ago

    Hi schdef,

     

    You can tansfrom your data to text, then use it into sql query.

     

    Sample: Convert region records to text.

     

    let
    Source=data,
    Region = "'"&Text.Combine(List.Distinct(Source[Region]),"','")&"'"
in
    Region

     

     

    Insert into sql query:

     

    let
Source = Sql.Database("xxxxx", "xxxxx", [Query="SELECT * FROM Sales WHERE Region In ("&Region&")"])
in
Source

     

     

    Regards,

    Xiaoxin Sheng

7 Replies

  • Anonymous's avatar
    Anonymous
    Not applicable
    9 years ago

    Hi schdef,

     

    You can tansfrom your data to text, then use it into sql query.

     

    Sample: Convert region records to text.

     

    let
    Source=data,
    Region = "'"&Text.Combine(List.Distinct(Source[Region]),"','")&"'"
in
    Region

     

     

    Insert into sql query:

     

    let
Source = Sql.Database("xxxxx", "xxxxx", [Query="SELECT * FROM Sales WHERE Region In ("&Region&")"])
in
Source

     

     

    Regards,

    Xiaoxin Sheng

    • bkellner's avatar
      bkellner
      Regular Visitor
      7 years ago

      I am working in Excel Power Pivot, my parameter list is generated from a table in the worksheet. The list generates well, and it displays correctly in the Query that is supposed to go out to SQL. Everything looks good, except, I am running into  a Formula.Firewall error message complaining that my step 'Source' references other queries and I need to rebuild it.

       

      For months, I have been trying to figure out a way to fold dynamic parameters back to SQL. This is the closest I have gotten. I can see how this should work. I can't get around the error message though.

       

      Is there something I need to be aware of when connecting to the database? Has something changed in the software that prevents this from folding back as intended? Are there better ways today to accomplish this task?

      • Anonymous's avatar
        Anonymous
        Not applicable
        6 years ago

        Even i have same error refelecting ? I couldnt find solution for that . Is there anyother way to do it ?

    • schdef's avatar
      schdef
      Frequent Visitor
      9 years ago

      Thanks Xiaoxin! Was hoping to get this adressed with query folding and applying filters dynamically but your solution works as well.

    • Anonymous's avatar
      Anonymous
      Not applicable
      6 years ago

      How would you do this for more than 1000 items in a list?

      I am trying to send a list back to Oracle and there is a 1000 item limit in the where clause.

      If anyone has any ideas about this or has gotten around it in any way please let me know.

      I am very new to power query and welcome all feedback.

      • lbendlin's avatar
        lbendlin
        Super User
        6 years ago

        OR the requests together

         

        where x in (,,,,,)

        or x in (,,,,,)

        or x in (,,,,,)

         

        etc.