Power BI代码以M语言进行过滤

Question

Please let me know why the below is not filtering

let
    Source = Sql.Database("localhost\SQLEXPRESS", "master"),
    dbo_dqra = Source{[Schema="dbo",Item="dqra"]}[Data],
    WTF = Table.SelectRows(dqRA as table, "column 0" < 25 as function) 
in
    dbo_dqra

first line is let 2nd line is source 3rd line is db 4th line is wtf 5th line is in 6th line is db

Answer 1

Your filter is being applied in the step that you have labeled "WTF", but the last clause of your query is returning the prior step, "dbo_dqra"

Also, there's some syntax that's wrong. You don't need those "as table" / "as function" remarks, and the column should be wrapped in brackets, not quotes.

Try this:

let
    Source = Sql.Database("localhost\SQLEXPRESS", "master"),
    dbo_dqra = Source{[Schema="dbo",Item="dqra"]}[Data],
    WTF = Table.SelectRows(dbo_dqra, each [column 0] < 25) 
in
    WTF