Excel中PowerQuery的COUNTIFS等价项

我有一个表，它是三个独立查询的结果，这些查询已经被附加。我想在powerquery中创建一个自定义列，它统计每行中的say“Nein”数等。

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罗恩·罗森菲尔德的答案，这里稍加修改即可

let Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
ColToCheck = List.RemoveFirstN(Table.ColumnNames(Source),1),
#"Added Index" = Table.AddIndexColumn(Source, "Index", 0, 1),
totals = Table.AddColumn( #"Added Index", "Count", each List.Count(Text.PositionOf(Text.Combine(Record.ToList(Table.SelectColumns(#"Added Index",ColToCheck){[Index]}),":")&":","Nein:",Occurrence.All ))),
#"Removed Columns" = Table.RemoveColumns(totals,{"Index"})
in #"Removed Columns"