Forum Discussion
RyanVSS
2 years agoFrequent Visitor
Help with mquery index formula
i have an index function to return the latest record attribute for each contact that is breaking when i apply it to large datasets. Table.RowCount(Table.SelectRows( #"Filtered Rows",(x)=>
x[...
- Anonymous2 years ago
Hi RyanVSS ,
Please try the following steps:let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMtc3MtY3MjAyUdJRcnQEEp55aflFuakpwcn5RalAvolSrA5YmRGKMo+YUgMDI7PwYqgyY5gyQxRlwYlpqSWVweiKDPBaCVNmaEmUlYYWMGVOTjitNDRHUYThSz0zmEIzFIU4LTXFb2ksAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [createdon = _t, slgc_contact = _t, Attribute = _t, Value = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"createdon", type date}, {"slgc_contact", type text}, {"Attribute", type text}, {"Value", type number}}), #"Sorted Rows" = Table.Sort(#"Changed Type",{{"createdon", Order.Descending}}), #"Grouped Rows" = Table.Group(#"Sorted Rows", {"slgc_contact", "Attribute"}, {{"Data", each Table.FirstN(_,1)}}), #"Expanded Data" = Table.ExpandTableColumn(#"Grouped Rows", "Data", {"createdon", "Value"}, {"createdon", "Value"}), #"Grouped Rows2" = Table.Group(#"Expanded Data", {"slgc_contact"}, {{"LatestSession", each List.Max([createdon]), type nullable date}, {"All", each _, type table [createdon=nullable date, slgc_contact=nullable text, Attribute=nullable text, Value=nullable number]}}), #"Expanded All" = Table.ExpandTableColumn(#"Grouped Rows2", "All", {"Attribute", "Value"}, {"Attribute", "Value"}), #"Pivoted Column" = Table.Pivot(#"Expanded All", List.Distinct(#"Expanded All"[Attribute]), "Attribute", "Value") in #"Pivoted Column"Best Regards,
Gao
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