Power BI Date Table and Time Intelligence Walkthrough
Build a calendar and use it for year-to-date and comparisons.
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[VERIFY] is an editorial flag, not a blank to fill. Wherever the prompt shows [VERIFY], check that item against a reliable source before you use it.
Help me set up a date table and time intelligence in Power BI. Date range of my data: [DATE_RANGE]. Fiscal year start month: [FISCAL_START]. Weeks and holidays I care about: [WEEKS_AND_HOLIDAYS]. Measures I want: [MEASURES_WANTED]. Explain in simple words why a separate date table is needed, how to create it (with DAX or Power Query) [VERIFY], the columns to include, and how to mark it as the date table. Write measures for year-to-date, month-to-date, previous year, previous month and percentage change in a table with formula, meaning and test; example: sales of 120 this month against 100 last month is +20 percent. Mark every formula [VERIFY]. List the traps: gaps in dates, a date table that does not cover all data, relationships to several date columns, and text dates. Test: pick three dates, compute the expected value by hand, and compare. Keep the explanation in plain words, and show what each measure returns for a month with no data so I know how blanks behave. Tell me which measure to build first to prove the date table works.
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