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jonoling's avatar
jonoling
Frequent Visitor
5 years ago
Solved

SQL Tables importing without associated data types

Hi,   I have a fact table that I'm connecting to in SQL. When reviewing the INFORMATION_SCHEMA.COLUMNS query in SSMS for the table it shows the [order_date] field as being stored as a datetime data...
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  • jonoling's avatar
    jonoling
    5 years ago

    None, it's the out of the box SQL Server connector from Power Query. The only inputs it's taking is the SQL string and DB, then navigating to the table in question. 

     

    let
       Source = Sql.Database(sqlserver, db)
       Table = Source{[Schema="dbo",Item=tablename]}[Data]
    in
       Table

     Agree, it doesn't seem to be a widespread issue, this is the first time I've come across an issue like this. Just tested with a sandbox WorldWideImporters DB and the native query generated brings through datatypes fine. 

     

    Odd!

lbendlin's avatar
lbendlin
Super User
5 years ago

Run a fiddler trace and also check the query logs on your SQL server.  Maybe something is blocking the meta data calls?

 

 

jonoling's avatar
jonoling
Frequent Visitor
5 years ago

Looks like the issue is with the Power BI SQL Connector itself. Looking at the native query being sent, all fields are being converted to text data types:

Writing a custom SQL statement to select the data seems to bring across the right datatypes. I haven't come across documentation on why this occurs and how to turn it off yet though.