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carlosDash
Advocate V
Advocate V

How do I pass parameters to my SQL statement?

‎01-25-2017 07:18 AM

How can I use parameters to create a dynamic SQL statement? I specified two parameters "DateStart" and "DateEnd" which I want to include in my Data source's SQL statement, but I don't know what the proper way to reference them is.  My aim is to have the users be able to adjust the parameter dates at the opening of the report.

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Message 1 of 23
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carlosDash
Advocate V
Advocate V
In response to carlosDash

‎01-27-2017 06:44 AM

I got it to work. Here is my code ( DateBegin & DateEnd parameters have been set to 'text'):

 

let
    StartDate=DateBegin,
    EndDate=DateEnd,
    Source = Sql.Database("this-is-the-database-url.com", "TableNameHere", 
    [Query="SELECT * FROM [TableNameHere].[dbo].[Logs] WHERE CreatedTime >='" &StartDate& "' AND CreatedTime <='" &EndDate& "' ", 
    CommandTimeout=#duration(0, 0, 10, 0), HierarchicalNavigation=true, MultiSubnetFailover=true])
in
    Source

Oddly enough, I got a bunch of error messages when exiting the 'Query Editor' (as show in my previous post) but when I created everything again from scratch, it works perfectly. 

 

I then saved the Power BI document as a template. When you open the template, you get prompted to enter the "DateBegin" and "DateEnd" parameters. Enter the parameters and the SQL query gets made, voila! Cat Happy

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Message 10 of 23
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22 REPLIES 22
JasonRoy
Frequent Visitor
In response to Anonymous

‎01-24-2019 07:16 AM

Step one is creating your custom SQL statement. I like to add my placeholder for a parameter when I create the SQL statements and replace those with the parameter once defined. The parameters need to be concatenated to the query using & outside of the quotes holding the query. If you created a table with a single SQL query, your M may look like the following.

 

Non-Parameterized Query

let
Source = Sql.Database("MyTestServer", "MyTestDatabase", [Query="SELECT test_key from MyFactTestTable WHERE datekey >= 20190101 AND datekey <= 20190201"])
in
Source

 

Parameterized Query

let
Source = Sql.Database("MyTestServer", "MyTestDatabase", [Query="SELECT test_key from MyFactTestTable WHERE datekey >= " & StartDate & " AND datekey <= " & CloseDate"])
in
Source

Message 8 of 23
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SAG1
Helper I
Helper I
In response to carlosDash

‎07-18-2017 02:22 PM

Hello CarlosDash 

 

I am in similar situation like this , i have huge DB that i can not download all together so need user to be able to select parameters and then get data ccordingly , how did you approach it ? Can you please help me here .

Message 6 of 23
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