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{"id":1087,"date":"2019-04-10T16:56:37","date_gmt":"2019-04-10T23:56:37","guid":{"rendered":"https:\/\/bonbonsguide.com\/wp\/?p=1087"},"modified":"2019-04-10T16:56:37","modified_gmt":"2019-04-10T23:56:37","slug":"power-query-get-previous-row-stock-price-change-formula-m-code-lookup-excel-magic-trick-1546","status":"publish","type":"post","link":"https:\/\/bonbonsguide.com\/wp\/blog\/2019\/04\/power-query-get-previous-row-stock-price-change-formula-m-code-lookup-excel-magic-trick-1546\/","title":{"rendered":"Power Query Get Previous Row? Stock Price Change Formula. M Code Lookup. Excel Magic Trick 1546"},"content":{"rendered":"Download Excel Start Files: http:\/\/bit.ly\/2UOzeiw
\nEntire page with all Excel Files for All Videos: http:\/\/bit.ly\/1kSFWvs<\/p>\n
In this video learn how to perform a two-way lookup to get the value from the previous row in order to calculate the change in stock price from day to day.<\/p>\n
1. (00:10) Introduction
\n2. (00:48) Formula in Excel
\n3. (01:33) Two Way Lookup to Get Previous Row M Code Formula Syntax
\n4. (05:16) Add Index Column that starts at -1
\n5. (06:08) Two Way Lookup Power Query Formula, including looking at Table, Record and literal values in a column.
\n6. (10:08) Formula to calculate Stock Price Change
\n7. (10:36) Power Query if function
\n8. (12:13) Summary
\nOther notes:
\nPower Query is base 0
\nTwo-Way Lookup: TableName{RowIndexNumber}[Column Name]\nTwo-Way Lookup: TableName{[Lookup Operator]}[Column Name]\nFormula we use: AddedIndex{[Index]}[GEClose]\nAddedIndex = Full Table with Columns and Rows
\n{ } = Positional Index Operator
\n[Index] = Lookup Operator
\n[GEClose] = Field Access Operator<\/p>\n